Climatological Report (Monthly)
Issued by NWS
Issued by NWS
864
CXUS56 KMTR 010838
CLMAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
138 AM PDT TUE OCT 01 2024
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...THE NAPA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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
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TEMPERATURE (F)
RECORD
HIGH 115 MM
LOW 35 09/29/2019
HIGHEST 96 09/03 85 09/27
LOWEST 45 09/08 46 09/09
09/23
AVG. MAXIMUM 80.1 77.5
AVG. MINIMUM 51.4 54.1
MEAN 65.8 65.8
DAYS MAX >= 90 4 0
DAYS MAX <= 32 0 0
DAYS MIN <= 32 0 0
DAYS MIN <= 0 0 0
PRECIPITATION (INCHES)
TOTALS TR 0.07 -0.07 0.12
DAILY AVG. 0.00 0.00
DAYS >= .01 0 3
DAYS >= .10 0 0
DAYS >= .50 0 0
DAYS >= 1.00 0 0
GREATEST
24 HR. TOTAL T 09/18 TO 09/18 0.07 09/30 TO 09/30
09/25 TO 09/25
09/26 TO 09/26
DEGREE DAYS
HEATING TOTAL 26 19
SINCE 7/1 39 MM
COOLING TOTAL 58 53
SINCE 1/1 359 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.3
RESULTANT WIND SPEED/DIRECTION 6/220
HIGHEST WIND SPEED/DIRECTION 28/270 DATE 09/11
HIGHEST GUST SPEED/DIRECTION 34/260 DATE 09/11
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.19
NUMBER OF DAYS FAIR 21
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 70
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 2 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 12 FOG W/VIS <= 1/4 MILE 4
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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