Climatological Report (Daily)
Issued by NWS
Issued by NWS
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191
CDUS46 KMTR 230831
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
131 AM PDT SAT AUG 23 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 22 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 71 1:36 PM 90 1999 74 -3 68
MINIMUM 56 11:59 PM 49 1955 57 -1 57
AVERAGE 64 65 -1 63
PRECIPITATION (IN)
YESTERDAY 0.00 0.02 1951 0.01 -0.01 0.00
MONTH TO DATE T 0.03 -0.03 T
SINCE OCT 1 16.11 19.56 -3.45 20.13
SINCE JAN 1 7.55 12.59 -5.04 14.80
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE JUN 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 1 1 0 2
MONTH TO DATE 18 32 -14 74
SINCE JUN 1 230 187 43 237
SINCE JUL 1 87 90 -3 124
COOLING
YESTERDAY 0 2 -2 0
MONTH TO DATE 21 24 -3 1
SINCE JUN 1 23 73 -50 50
SINCE JAN 1 29 93 -64 61
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 16 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 16.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 3:00 AM
LOWEST 59 1:00 PM
AVERAGE 78
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 2010
MINIMUM TEMPERATURE (F) 57 49 1953
SUNRISE AND SUNSET
AUGUST 23 2025........SUNRISE 6:33 AM PDT SUNSET 7:51 PM PDT
AUGUST 24 2025........SUNRISE 6:33 AM PDT SUNSET 7:49 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$