Climatological Report (Monthly)
Issued by NWS
Issued by NWS
920
CXUS56 KMTR 010839
CLMSTS
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1239 AM PST WED JAN 01 2025
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...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2024
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 78 12/15/2013
12/19/1999
12/04/1958
LOW 19 12/09/2013
HIGHEST 71 12/06 70 12/22
12/08
LOWEST 28 12/10 30 12/10
AVG. MAXIMUM 60.3 57.5 2.8 60.8
AVG. MINIMUM 41.0 36.9 4.1 41.6
MEAN 50.6 47.2 3.4 51.2
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 3 10.9 -7.9 6
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 17.95 2005
MINIMUM 0.08 2017
TOTALS 9.68 8.74
DAILY AVG. 0.31 0.28
DAYS >= .01 15 13
DAYS >= .10 13 9
DAYS >= .50 7 4
DAYS >= 1.00 4 4
GREATEST
24 HR. TOTAL 3.06 12/13 TO 12/14 2.74 12/18 TO 12/18
DEGREE DAYS
HEATING TOTAL 440 420
SINCE 7/1 948 MM
COOLING TOTAL 0 0
SINCE 1/1 705 MM
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WIND (MPH)
AVERAGE WIND SPEED 3.4
RESULTANT WIND SPEED/DIRECTION 1/190
HIGHEST WIND SPEED/DIRECTION 24/150 DATE 12/13
24/230 12/24
HIGHEST GUST SPEED/DIRECTION 38/140 DATE 12/13
38/220 12/24
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.54
NUMBER OF DAYS FAIR 11
NUMBER OF DAYS PC 10
NUMBER OF DAYS CLOUDY 10
AVERAGE RH (PERCENT) 83
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 11 RAIN 12
LIGHT RAIN 16 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 30 FOG W/VIS <= 1/4 MILE 12
HAZE 5
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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