Climatological Report (Monthly) Issued by NWS
000
CXUS56 KMTR 010900
CLMSFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
200 AM PDT SUN OCT 01 2023
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...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 104 09/02/2017
09/01/2017
02/13/2353849
LOW 41 09/30/1950
HIGHEST 77 09/25 97 09/05
09/26
LOWEST 55 09/10 55 09/01
09/23
09/24
09/02
AVG. MAXIMUM 73.3 74.8 -1.5 77.1
AVG. MINIMUM 58.9 59.2
MEAN 66.1 65.3 0.8 68.2
DAYS MAX >= 90 0 3
DAYS MAX <= 32 0 0
DAYS MIN <= 32 0 0
DAYS MIN <= 0 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.30 1959
MINIMUM 0.00 2021
TOTALS 0.03 0.07 -0.04 0.27
DAILY AVG. 0.00 0.00 -0.00 0.01
DAYS >= .01 2 3
DAYS >= .10 0 2
DAYS >= .50 0 0
DAYS >= 1.00 0 0
GREATEST
24 HR. TOTAL 0.02 09/30 TO 09/30 0.16 09/21 TO 09/21
DEGREE DAYS
HEATING TOTAL 6 46 -40 13
SINCE 7/1 53 146 -93 MM
COOLING TOTAL 48 56 -8 114
SINCE 1/1 187 166 21 MM
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WIND (MPH)
AVERAGE WIND SPEED 10.1
RESULTANT WIND SPEED/DIRECTION 8/280
HIGHEST WIND SPEED/DIRECTION 31/280 DATE 09/27
HIGHEST GUST SPEED/DIRECTION 43/270 DATE 09/11
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.39
NUMBER OF DAYS FAIR 15
NUMBER OF DAYS PC 14
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 70
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 3 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 10 FOG W/VIS <= 1/4 MILE 0
HAZE 22
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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