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CDUS46 KMTR 210827
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
127 AM PDT WED MAY 21 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 20 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 65 2:22 PM 93 1988 69 -4 72
MINIMUM 51 5:49 AM 45 1950 52 -1 52
1976
1982
AVERAGE 58 60 -2 62
PRECIPITATION (IN)
YESTERDAY 0.00 1.53 1957 0.02 -0.02 0.00
MONTH TO DATE 0.11 0.35 -0.24 0.95
SINCE OCT 1 16.11 19.26 -3.15 20.13
SINCE JAN 1 7.55 12.29 -4.74 14.80
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 7 5 2 3
MONTH TO DATE 109 119 -10 92
SINCE MAR 1 663 649 14 581
SINCE JUL 1 2196 2328 -132 1722
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 2 0 2 10
SINCE MAR 1 5 6 -1 11
SINCE JAN 1 5 6 -1 11
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 18 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 17.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 12:00 AM
LOWEST 50 2:00 PM
AVERAGE 70
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THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 92 2000
MINIMUM TEMPERATURE (F) 52 45 1962
1974
SUNRISE AND SUNSET
MAY 21 2025...........SUNRISE 5:55 AM PDT SUNSET 8:18 PM PDT
MAY 22 2025...........SUNRISE 5:55 AM PDT SUNSET 8:18 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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