862
CDUS46 KMTR 180044
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
544 PM PDT SAT MAY 17 2025
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 17 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 63 1:37 PM 93 1997 68 -5 70
2009
MINIMUM 52 3:26 AM 45 1966 52 0 54
AVERAGE 58 60 -2 62
PRECIPITATION (IN)
TODAY 0.00 0.24 1994 0.01 -0.01 0.00
MONTH TO DATE 0.11 0.30 -0.19 0.95
SINCE OCT 1 16.11 19.21 -3.10 20.13
SINCE JAN 1 7.55 12.24 -4.69 14.80
SNOWFALL (IN)
TODAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 7 5 2 3
MONTH TO DATE 91 104 -13 82
SINCE MAR 1 645 634 11 571
SINCE JUL 1 2178 2313 -135 1712
COOLING
TODAY 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 25 RESULTANT WIND DIRECTION W (270)
HIGHEST WIND SPEED 40 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 55 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 24.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 1:00 AM
LOWEST 62 11:00 AM
AVERAGE 76
......................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 85 1978
MINIMUM TEMPERATURE (F) 52 42 1950
1974
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 5:58 AM PDT SUNSET 8:14 PM PDT
MAY 18 2025...........SUNRISE 5:57 AM PDT SUNSET 8:15 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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