Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
079
FNUS56 KSTO 171101
FWFSTO
Fire Weather Planning Forecast for Interior Northern California
National Weather Service Sacramento CA
401 AM PDT Fri Oct 17 2025
.DISCUSSION...
Dry weather with near seasonal temperatures prevail into the
middle of next week. Locally breezy north to east winds develop on
Monday, mainly along and west of I-5 in the Valley, Delta, and
the Sierra. A pattern change may bring cooler temperatures and
unsettled weather late next week.
CAZ213-180000-
Eastern Portion of Shasta-Trinity NF-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........77-82 lower elevations...except 68-77
higher elevations.
* 24 HR Trend..........6 degrees warmer.
* Min Humidity...........26-34 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds 4 to 9 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Northeast winds 5 to 11 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........3800 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........50-55 lower elevations...except 40-50
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........59-74 percent.
* 24 HR Trend..........10 percent up.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds up to 8 mph.
* Ridges/Upr Slopes....North winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......1 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........76-81 lower elevations...except 68-76
higher elevations.
* Min Humidity...........30-45 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds up to 7 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Northeast winds 4 to 9 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........3100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ214-180000-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........67-73.
* 24 HR Trend..........7 degrees warmer.
* Min Humidity...........25-30 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....East winds up to 8 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........4300 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........35-41.
* 24 HR Trend..........Little change.
* Max Humidity...........84-94 percent lower elevations...except
64-79 percent high elevations.
* 24 HR Trend..........10 percent up.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........700 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........73-78 lower elevations...except 68-73
higher elevations.
* Min Humidity...........28-36 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* Mixing Height..........3600 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ215-180000-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........75-80.
* 24 HR Trend..........Little change.
* Min Humidity...........30-37 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds 4 to 9 mph shifting to the
southeast up to 6 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........2300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........49-54.
* 24 HR Trend..........Little change.
* Max Humidity...........68-83 percent.
* 24 HR Trend..........15 percent up.
* 20-Foot Winds..........Southeast winds up to 6 mph shifting to
the north after midnight.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........77-82.
* Min Humidity...........31-44 percent.
* 20-Foot Winds..........North winds up to 7 mph shifting to the
south up to 6 mph in the afternoon.
* Mixing Height..........2700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ216-180000-
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........72-77.
* 24 HR Trend..........Little change.
* Min Humidity...........38-50 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........East winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........2100 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........48-53.
* 24 HR Trend..........Little change.
* Max Humidity...........78-93 percent.
* 24 HR Trend..........4 percent up.
* 20-Foot Winds..........Southeast winds up to 5 mph shifting to
the north up to 6 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........75-80.
* Min Humidity...........40-55 percent.
* 20-Foot Winds..........Northwest winds up to 7 mph.
* Mixing Height..........2300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ217-180000-
Southern Sacramento Valley in Yolo-
Sacramento Far Western Placer, southern Sutter and Solano County
Below 1000 Ft-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........71-76.
* 24 HR Trend..........Little change.
* Min Humidity...........44-55 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........East winds up to 7 mph shifting to the
south up to 6 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........2300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........49-54.
* 24 HR Trend..........Little change.
* Max Humidity...........76-91 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........South winds up to 5 mph shifting to the
east up to 7 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........75-80.
* Min Humidity...........38-53 percent.
* 20-Foot Winds..........North winds up to 8 mph.
* Mixing Height..........2400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ218-180000-
Carquinez Strait and Delta-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........71-76.
* 24 HR Trend..........Little change.
* Min Humidity...........47-56 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........East winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........2200 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........50-55.
* 24 HR Trend..........Little change.
* Max Humidity...........87-93 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........South winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........74-79.
* Min Humidity...........43-58 percent.
* 20-Foot Winds..........Northeast winds 4 to 9 mph.
* Mixing Height..........2300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ219-180000-
Northern San Joaquin Valley in San Joaquin and Stanislaus
Counties Below 1000 ft-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny. Widespread fog in the
morning.
* Max Temperature........72-77.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........48-55 percent.
* 24 HR Trend..........11 percent down.
* 20-Foot Winds..........Southeast winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........2600 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........50-55.
* 24 HR Trend..........Little change.
* Max Humidity...........71-86 percent.
* 24 HR Trend..........9 percent down.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
southeast after midnight.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........74-79.
* Min Humidity...........35-50 percent.
* 20-Foot Winds..........Southeast winds up to 8 mph.
* Mixing Height..........2400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ263-279-180000-
Southeast Edge Shasta-Trinity NF and Western Portions of Tehama-
Glenn Unit-Eastern Mendocino NF-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........76-81 lower elevations...except 63-72
higher elevations.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........31-37 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 4 to 9 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Northeast winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........2600 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........54-59 lower elevations...except 49-54
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........51-62 percent.
* 24 HR Trend..........12 percent up.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 7 mph.
* Ridges/Upr Slopes....Northwest winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........76-81 lower elevations...except 63-71
higher elevations.
* Min Humidity...........41-56 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Northwest winds up to 8 mph shifting to the
southeast up to 7 mph in the afternoon.
* Mixing Height..........2500 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ266-180000-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........69-75.
* 24 HR Trend..........Little change.
* Min Humidity...........30-40 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds 7 to 13 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Northeast winds 4 to 10 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........2200 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........51-56.
* 24 HR Trend..........Little change.
* Max Humidity...........50-63 percent.
* 24 HR Trend..........12 percent up.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph becoming
northeast 4 to 10 mph after midnight.
* Ridges/Upr Slopes....Variable winds up to 5 mph becoming
northeast up to 8 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........71-77.
* Min Humidity...........34-49 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds 6 to 12 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Northeast winds 4 to 10 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........2400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ220-267-180000-
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Toulumne-Calaveras Unit-
Northern Motherlode From 1000 to 3000 Ft. Includes portions of
Nevada-Yuba-Placer-Amador and Eldorado Units-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........68-73.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........35-44 percent.
* 24 HR Trend..........20 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Southeast winds up to 7 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....East winds up to 7 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........2500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........49-54.
* 24 HR Trend..........4 degrees warmer.
* Max Humidity...........58-69 percent.
* 24 HR Trend..........7 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph becoming east up
to 7 mph after midnight.
* Ridges/Upr Slopes....Variable winds up to 5 mph becoming east up
to 7 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........72-77.
* Min Humidity...........30-45 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 7 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....East winds up to 7 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........2900 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ268-180000-
Northern Sierra Including Lassen NP and Plumas and Lassen NF/S
West of the Sierra Crest (West of Evans Peak-Grizzly Peak-
Beckworth Peak)-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........66-71 lower elevations...except 60-67
higher elevations.
* 24 HR Trend..........6 degrees warmer.
* Min Humidity...........25-32 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds 6 to 12 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....Northeast winds 5 to 11 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........3400 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........39-49.
* 24 HR Trend..........Little change.
* Max Humidity...........51-66 percent...except 71-86 percent in
the high mountain valleys.
* 24 HR Trend..........9 percent up.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds 4 to 9 mph.
* Ridges/Upr Slopes....Northeast winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........300 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........67-73 lower elevations...except 62-68
higher elevations.
* Min Humidity...........29-44 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds 5 to 11 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....East winds 4 to 10 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........3200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ221-269-180000-
Stanislaus NF West of the Sierra Crest-
Northern Sierra Including the Tahoe and Eldorado NF/S West of the
Sierra Crest-
401 AM PDT Fri Oct 17 2025
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........65-72 lower elevations...except 56-66
higher elevations.
* 24 HR Trend..........8 degrees warmer.
* Min Humidity...........26-35 percent.
* 24 HR Trend..........19 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds 4 to 10 mph shifting to the west
up to 7 mph in the afternoon.
* Ridges/Upr Slopes....East winds 7 to 13 mph in the morning
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........2200 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........46-52 lower elevations...except 36-46
higher elevations.
* 24 HR Trend..........6 degrees warmer.
* Max Humidity...........45-59 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds 4 to 9 mph.
* Ridges/Upr Slopes....East winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........300 ft AGL.
* Chance of thunder......0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature........69-75 lower elevations...except 58-68
higher elevations.
* Min Humidity...........29-44 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 8 mph in the morning
becoming upslope up to 5 mph.
* Ridges/Upr Slopes....East winds 6 to 12 mph in the morning
becoming variable up to 5 mph.
* Mixing Height..........2800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
.Extended...
...Shasta County Mountains and Coastal Range
.SATURDAY NIGHT...Clear. Lows 42 to 52. Variable less than 5 mph.
.SUNDAY...Sunny. Highs 62 to 71. West winds up to 10 mph.
.SUNDAY NIGHT...Clear. Lows 39 to 49. North winds 5 to 15 mph.
.MONDAY...Sunny. Highs 63 to 72. Northeast winds up to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows 41 to 51. Variable less than
5 mph.
.TUESDAY...Mostly sunny. Highs 62 to 72. Variable less than
5 mph.
.TUESDAY NIGHT...Partly cloudy. Lows 40 to 50. Variable less than
5 mph.
...Northern Sierra and Lassen Park
.SATURDAY NIGHT...Clear. Lows 42 to 52. East winds up to 10 mph.
.SUNDAY...Sunny. Highs 65 to 74. Southwest winds up to 10 mph.
.SUNDAY NIGHT...Clear. Lows 40 to 50. Northeast winds up to
10 mph.
.MONDAY...Sunny. Highs 67 to 75. Variable less than 5 mph.
.MONDAY NIGHT...Clear. Lows 41 to 51. Variable less than 5 mph.
.TUESDAY...Mostly sunny. Highs 65 to 74. Variable less than
5 mph.
.TUESDAY NIGHT...Partly cloudy. Lows 40 to 50. Variable less than
5 mph.
...Sierra Nevada Foothills
.SATURDAY NIGHT...Clear. Lows 51 to 56. East winds up to 10 mph.
.SUNDAY...Sunny. Highs 72 to 77. South winds 5 to 15 mph.
.SUNDAY NIGHT...Clear. Lows 50 to 55. Northeast winds up to
10 mph.
.MONDAY...Sunny. Highs 72 to 77. Variable less than 5 mph.
.MONDAY NIGHT...Clear. Lows 51 to 56. Variable less than 5 mph.
.TUESDAY...Mostly sunny. Highs 72 to 77. Variable less than
5 mph.
.TUESDAY NIGHT...Mostly clear. Lows 50 to 55. Variable less than
5 mph.
...Central Valley and Delta
.SATURDAY NIGHT...Clear. Lows 49 to 54. Variable less than 5 mph.
.SUNDAY...Sunny. Highs 77 to 82. Variable less than 5 mph.
.SUNDAY NIGHT...Clear. Lows 51 to 56. North winds up to 10 mph.
.MONDAY...Sunny. Highs 76 to 81. North winds 5 to 10 mph.
.MONDAY NIGHT...Clear. Lows 50 to 55. Variable less than 5 mph.
.TUESDAY...Mostly sunny. Highs 75 to 80. Variable less than
5 mph.
.TUESDAY NIGHT...Mostly clear. Lows 51 to 56. Variable less than
5 mph.
$$