Climatological Report (Daily)
Issued by NWS
Issued by NWS
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842
CDUS46 KMTR 010042
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
542 PM PDT SUN AUG 31 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 31 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
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)
TODAY 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)
TODAY MM 0.0
MONTH TO DATE T
SINCE JUN 1 T
SINCE JUL 1 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 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
TODAY 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 8 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 9.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 5:00 AM
LOWEST 39 2:00 PM
AVERAGE 59
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 104 2017
MINIMUM TEMPERATURE (F) 56 49 1957
1981
SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE 6:39 AM PDT SUNSET 7:39 PM PDT
SEPTEMBER 1 2025.....SUNRISE 6:40 AM PDT SUNSET 7:38 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$