Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
612
FNUS56 KSTO 060923
FWFSTO
Fire Weather Planning Forecast for Interior Northern California
National Weather Service Sacramento CA
122 AM PST Sat Dec 6 2025
.DISCUSSION...
Dry weather, seasonable temperatures, and morning fog expected
over the next several days as high pressure remains in control.
Generally light and terrain driven winds are anticipated.
CAZ213-070100-
Eastern Portion of Shasta-Trinity NF-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing. Patchy fog in the morning.
* Max Temperature........59-64 lower elevations...except 50-58
higher elevations.
* 24 HR Trend..........Little change.
* Min Humidity...........54-66 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....North winds up to 7 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........1800 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........41-46 lower elevations...except 32-41
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........77-92 percent.
* 24 HR Trend..........13 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds up to 7 mph.
* Ridges/Upr Slopes....North winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy until late afternoon then
clearing. Areas of frost early in the morning.
* Max Temperature........57-62 lower elevations...except 48-56
higher elevations.
* Min Humidity...........58-73 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....North winds up to 7 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........2000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ214-070100-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
mostly sunny. Patchy frost in the morning.
* Max Temperature........49-54.
* 24 HR Trend..........Little change.
* Min Humidity...........59-67 percent.
* 24 HR Trend..........13 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........2500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy frost in the
evening, then areas of frost after midnight.
* Min Temperature........28-33.
* 24 HR Trend..........4 degrees cooler.
* Max Humidity...........95-100 percent lower elevations...except
83-98 percent high elevations.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........700 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy until late afternoon then
becoming mostly sunny. Widespread frost early in the morning.
Patchy frost late in the morning.
* Max Temperature........49-54.
* Min Humidity...........55-70 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* Mixing Height..........2100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ215-070100-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then
clearing. Widespread fog in the morning.
* Max Temperature........59-64.
* 24 HR Trend..........Little change.
* Min Humidity...........65-80 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........Northwest winds up to 5 mph shifting to
the southeast up to 6 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........1300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear in the evening then becoming
mostly cloudy.
* Min Temperature........40-45.
* 24 HR Trend..........Little change.
* Max Humidity...........90-100 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........North winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy until late afternoon then
becoming mostly sunny.
* Max Temperature........56-61.
* Min Humidity...........67-82 percent.
* 20-Foot Winds..........North winds up to 6 mph in the morning
becoming variable less than 5 mph.
* Mixing Height..........1300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ216-070100-
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
mostly sunny. Widespread fog in the morning.
* Max Temperature........56-61.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........71-86 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northwest winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........1200 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear in the evening then becoming
mostly cloudy.
* Min Temperature........41-46.
* 24 HR Trend..........Little change.
* Max Humidity...........95-100 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy until late afternoon then
becoming partly cloudy.
* Max Temperature........54-59.
* Min Humidity...........69-84 percent.
* 20-Foot Winds..........North winds up to 6 mph.
* Mixing Height..........1000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ217-070100-
Southern Sacramento Valley in Yolo-
Sacramento Far Western Placer, southern Sutter and Solano County
Below 1000 Ft-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
partly cloudy. Patchy fog in the morning.
* Max Temperature........54-59.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........76-86 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northwest winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........1300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear in the evening then becoming
mostly cloudy.
* Min Temperature........41-46.
* 24 HR Trend..........Little change.
* Max Humidity...........95-100 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northeast winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy.
* Max Temperature........55-60.
* Min Humidity...........69-84 percent.
* 20-Foot Winds..........Southeast winds up to 6 mph shifting to
the northwest in the afternoon.
* Mixing Height..........1100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ218-070100-
Carquinez Strait and Delta-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
partly cloudy. Patchy fog in the morning.
* Max Temperature........54-59.
* 24 HR Trend..........4 degrees warmer.
* Min Humidity...........74-84 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northeast winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........1200 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear in the evening then becoming
mostly cloudy.
* Min Temperature........40-45.
* 24 HR Trend..........Little change.
* Max Humidity...........95-100 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Variable winds less than 5 mph becoming
east up to 5 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy.
* Max Temperature........55-60.
* Min Humidity...........74-89 percent.
* 20-Foot Winds..........East winds up to 5 mph in the morning
becoming variable less than 5 mph.
* Mixing Height..........1100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ219-070100-
Northern San Joaquin Valley in San Joaquin and Stanislaus
Counties Below 1000 ft-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Partly cloudy. Widespread dense fog in the
morning.
* Max Temperature........52-57.
* 24 HR Trend..........Little change.
* Min Humidity...........71-86 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northwest winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........1300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........41-46.
* 24 HR Trend..........Little change.
* Max Humidity...........95-100 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........East winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy.
* Max Temperature........56-61.
* Min Humidity...........63-78 percent.
* 20-Foot Winds..........Southeast winds up to 6 mph shifting to
the northwest up to 7 mph in the afternoon.
* Mixing Height..........1200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ263-279-070100-
Southeast Edge Shasta-Trinity NF and Western Portions of Tehama-
Glenn Unit-Eastern Mendocino NF-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing. At lower elevations, areas of fog in the morning.
* Max Temperature........60-65 lower elevations...except 50-57
higher elevations.
* 24 HR Trend..........Little change.
* Min Humidity...........45-60 percent.
* 24 HR Trend..........12 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 8 mph shifting to the
east up to 7 mph in the afternoon.
* Ridges/Upr Slopes....Northwest winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........1500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........41-46.
* 24 HR Trend..........Little change.
* Max Humidity...........75-86 percent lower elevations...except
64-73 percent high elevations.
* 24 HR Trend..........14 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...West winds 4 to 10 mph.
* Ridges/Upr Slopes....West winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
late in the morning then becoming mostly cloudy then becoming
mostly sunny late in the afternoon.
* Max Temperature........58-63 lower elevations...except 48-56
higher elevations.
* Min Humidity...........55-70 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 7 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....West winds 4 to 9 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........1600 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ266-070100-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing. Patchy fog in the morning.
* Max Temperature........56-61.
* 24 HR Trend..........Little change.
* Min Humidity...........62-77 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds up to 7 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........1300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........41-46.
* 24 HR Trend..........Little change.
* Max Humidity...........69-84 percent.
* 24 HR Trend..........18 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 8 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph becoming east up
to 8 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
early in the afternoon then becoming partly cloudy.
* Max Temperature........55-60.
* Min Humidity...........60-75 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 8 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....East winds up to 7 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........1400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ220-267-070100-
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Toulumne-Calaveras Unit-
Northern Motherlode From 1000 to 3000 Ft. Includes portions of
Nevada-Yuba-Placer-Amador and Eldorado Units-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly sunny. Widespread dense fog in the
morning.
* Max Temperature........54-59.
* 24 HR Trend..........4 degrees warmer.
* Min Humidity...........73-84 percent lower elevations...except
61-73 percent high elevations.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........1200 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........41-46.
* 24 HR Trend..........Little change.
* Max Humidity...........91-100 percent lower elevations...except
77-92 percent high elevations.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy until late afternoon then
becoming mostly cloudy.
* Max Temperature........56-61.
* Min Humidity...........63-78 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* Mixing Height..........1300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ268-070100-
Northern Sierra Including Lassen NP and Plumas and Lassen NF/S
West of the Sierra Crest (West of Evans Peak-Grizzly Peak-
Beckworth Peak)-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly sunny. Patchy frost in the morning.
* Max Temperature........51-56 lower elevations...except 46-52
higher elevations.
* 24 HR Trend..........Little change.
* Min Humidity...........52-64 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 7 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....West winds up to 7 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........2100 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear. Areas of frost.
* Min Temperature........31-41.
* 24 HR Trend..........Little change.
* Max Humidity...........73-88 percent...except 95-100 percent in
the high mountain valleys.
* 24 HR Trend..........12 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 8 mph.
* Ridges/Upr Slopes....West winds up to 7 mph shifting to the
southwest up to 8 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........300 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
early in the afternoon then becoming partly cloudy. Widespread
frost early in the morning.
* Max Temperature........51-56 lower elevations...except 45-51
higher elevations.
* Min Humidity...........53-68 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 8 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Southwest winds up to 8 mph.
* Mixing Height..........2200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ221-269-070100-
Stanislaus NF West of the Sierra Crest-
Northern Sierra Including the Tahoe and Eldorado NF/S West of the
Sierra Crest-
122 AM PST Sat Dec 6 2025
.TODAY...
* Sky/Weather............Mostly sunny. At lower elevations,
widespread dense fog in the morning. At higher elevations, areas
of frost in the morning.
* Max Temperature........56-62 lower elevations...except 47-57
higher elevations.
* 24 HR Trend..........Little change.
* Min Humidity...........46-60 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 7 mph.
* Ridges/Upr Slopes....Northwest winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........1600 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear. Areas of frost in the
evening. Widespread frost after midnight.
* Min Temperature........41-46 lower elevations...except 30-40
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........65-80 percent.
* 24 HR Trend..........7 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 7 mph.
* Ridges/Upr Slopes....East winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........300 ft AGL.
* Chance of thunder......0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy until late afternoon then
becoming mostly cloudy.
* Max Temperature........56-62 lower elevations...except 47-57
higher elevations.
* Min Humidity...........47-62 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Southeast winds up to 7 mph shifting to the
west in the afternoon.
* Mixing Height..........2300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
.Extended...
...Shasta County Mountains and Coastal Range
.SUNDAY NIGHT...Mostly clear. Lows 33 to 43. Northwest winds up
to 10 mph.
.MONDAY...Mostly sunny. Highs 52 to 60. Northwest winds up to
10 mph.
.MONDAY NIGHT...Partly cloudy. Lows 36 to 46. Northwest winds up
to 10 mph.
.TUESDAY...Partly cloudy with a slight chance of showers. Highs
53 to 61. Variable less than 5 mph.
.TUESDAY NIGHT...Mostly cloudy with a slight chance of showers.
Lows 38 to 48. Northwest winds up to 10 mph.
.WEDNESDAY...Partly cloudy with a slight chance of showers. Highs
55 to 63. Northwest winds up to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows 37 to 47. Northwest winds
up to 10 mph.
...Northern Sierra and Lassen Park
.SUNDAY NIGHT...Mostly clear. Lows 34 to 44. Northeast winds up
to 10 mph.
.MONDAY...Mostly sunny. Highs 56 to 64. North winds up to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows 37 to 47. Northeast winds up
to 10 mph.
.TUESDAY...Mostly sunny. Highs 58 to 67. Variable less than
5 mph.
.TUESDAY NIGHT...Partly cloudy. Lows 38 to 48. Variable less than
5 mph.
.WEDNESDAY...Mostly sunny. Highs 59 to 68. Variable less than
5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows 37 to 47. Variable less
than 5 mph.
...Sierra Nevada Foothills
.SUNDAY NIGHT...Mostly clear. Lows 41 to 46. Variable less than
5 mph.
.MONDAY...Mostly sunny. Highs 58 to 63. Northeast winds up to
10 mph.
.MONDAY NIGHT...Mostly clear. Lows 43 to 48. Variable less than
5 mph.
.TUESDAY...Mostly sunny. Highs 60 to 65. Variable less than
5 mph.
.TUESDAY NIGHT...Partly cloudy. Lows 45 to 50. Variable less than
5 mph.
.WEDNESDAY...Mostly sunny. Highs 61 to 66. Variable less than
5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows 44 to 49. Variable less
than 5 mph.
...Central Valley and Delta
.SUNDAY NIGHT...Mostly clear. Lows 41 to 46. Variable less than
5 mph.
.MONDAY...Mostly cloudy. Highs 56 to 61. Variable less than
5 mph.
.MONDAY NIGHT...Partly cloudy. Lows 42 to 47. Variable less than
5 mph.
.TUESDAY...Mostly cloudy. Highs 58 to 63. Variable less than
5 mph.
.TUESDAY NIGHT...Mostly cloudy. Lows 44 to 49. Variable less than
5 mph.
.WEDNESDAY...Mostly cloudy. Highs 59 to 64. Variable less than
5 mph.
.WEDNESDAY NIGHT...Partly cloudy. Lows 44 to 49. Variable less
than 5 mph.
$$