Climatological Report (Monthly)
Issued by NWS
Issued by NWS
518
CXUS56 KMTR 011730
CLMAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
930 AM PST SAT FEB 01 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 80 01/12/2009
LOW 18 01/15/2007
HIGHEST 70 01/07 71 01/28
01/29
LOWEST 28 01/22 27 01/07
01/28
AVG. MAXIMUM 60.4 59.4
AVG. MINIMUM 35.0 41.5
MEAN 47.7 50.4
DAYS MAX >= 90 0 0
DAYS MAX <= 32 0 0
DAYS MIN <= 32 9 5
DAYS MIN <= 0 0 0
PRECIPITATION (INCHES)
TOTALS 0.89 4.17 -3.28 4.72
DAILY AVG. 0.03 0.15
DAYS >= .01 3 14
DAYS >= .10 2 10
DAYS >= .50 1 3
DAYS >= 1.00 0 1
GREATEST
24 HR. TOTAL 0.61 01/31 TO 01/31 1.53 01/31 TO 01/31
DEGREE DAYS
HEATING TOTAL 531 440
SINCE 7/1 1456 MM
COOLING TOTAL 0 0
SINCE 1/1 0 MM
................................................................
WIND (MPH)
AVERAGE WIND SPEED 5.3
RESULTANT WIND SPEED/DIRECTION 2/020
HIGHEST WIND SPEED/DIRECTION 33/360 DATE 01/07
HIGHEST GUST SPEED/DIRECTION 43/360 DATE 01/07
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.24
NUMBER OF DAYS FAIR 21
NUMBER OF DAYS PC 8
NUMBER OF DAYS CLOUDY 2
AVERAGE RH (PERCENT) 70
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 2
LIGHT RAIN 3 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 15 FOG W/VIS <= 1/4 MILE 10
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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