Climatological Report (Daily)
Issued by NWS
Issued by NWS
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685
CDUS46 KMTR 210825
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
125 AM PDT FRI AUG 21 2026
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 20 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 69 2:25 PM 89 2023 74 -5 82
MINIMUM 56 5:28 AM 47 1955 57 -1 57
AVERAGE 63 65 -2 70
PRECIPITATION (IN)
YESTERDAY 0.00 0.04 1997 0.00 0.00 0.00
MONTH TO DATE 0.03 0.02 0.01 T
SINCE OCT 1 19.62 19.55 0.07 16.11
SINCE JAN 1 10.77 12.58 -1.81 7.55
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE JUN 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 2 1 1 0
MONTH TO DATE 12 30 -18 17
SINCE JUN 1 122 185 -63 229
SINCE JUL 1 62 88 -26 86
COOLING
YESTERDAY 0 1 -1 5
MONTH TO DATE 11 20 -9 17
SINCE JUN 1 63 69 -6 19
SINCE JAN 1 106 89 17 25
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 15 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 14.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 12:00 AM
LOWEST 65 1:00 PM
AVERAGE 79
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1974
MINIMUM TEMPERATURE (F) 57 48 1952
SUNRISE AND SUNSET
AUGUST 21 2026........SUNRISE 6:31 AM PDT SUNSET 7:54 PM PDT
AUGUST 22 2026........SUNRISE 6:31 AM PDT SUNSET 7:53 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$