Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 010829
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT MON SEP 01 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 31 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 83 11:41 AM 89 2005 74 9 68
MINIMUM 60 5:43 AM 48 1955 56 4 59
1957
AVERAGE 72 65 7 64
PRECIPITATION (IN)
YESTERDAY 0.00 0.01 1964 0.00 0.00 0.00
MONTH TO DATE T 0.04 -0.04 0.10
SINCE OCT 1 16.11 19.57 -3.46 20.23
SINCE JAN 1 7.55 12.60 -5.05 14.90
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE JUN 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 1
MONTH TO DATE 21 43 -22 80
SINCE JUN 1 233 198 35 243
SINCE JUL 1 90 101 -11 130
COOLING
YESTERDAY 7 2 5 0
MONTH TO DATE 42 41 1 14
SINCE JUN 1 44 90 -46 63
SINCE JAN 1 50 110 -60 74
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 12.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 11:00 PM
LOWEST 39 2:00 PM
AVERAGE 61
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 104 2017
MINIMUM TEMPERATURE (F) 56 49 1957
1981
SUNRISE AND SUNSET
SEPTEMBER 1 2025.....SUNRISE 6:40 AM PDT SUNSET 7:38 PM PDT
SEPTEMBER 2 2025.....SUNRISE 6:41 AM PDT SUNSET 7:36 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$