086
CDUS46 KMTR 180038
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
538 PM PDT WED SEP 17 2025
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 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 81 2:32 PM 94 1984 75 6 65
MINIMUM 57 6:41 AM 50 1945 56 1 54
1946
1988
AVERAGE 69 65 4 60
PRECIPITATION (IN)
TODAY 0.00 0.28 1982 0.00 0.00 0.00
MONTH TO DATE 0.02 0.02 0.00 0.00
SINCE OCT 1 16.13 19.59 -3.46 20.23
SINCE JAN 1 7.57 12.62 -5.05 14.90
SNOWFALL (IN)
TODAY MM 0.0
MONTH TO DATE T
SINCE SEP 1 T
SINCE JUL 1 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 1 -1 5
MONTH TO DATE 2 19 -17 47
SINCE SEP 1 2 19 -17 47
SINCE JUL 1 92 121 -29 177
COOLING
TODAY 4 2 2 0
MONTH TO DATE 40 34 6 3
SINCE SEP 1 40 34 6 3
SINCE JAN 1 90 144 -54 77
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION NW (310)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 11.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 41 2:00 PM
AVERAGE 69
......................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 93 2009
MINIMUM TEMPERATURE (F) 56 46 1955
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 6:53 AM PDT SUNSET 7:14 PM PDT
SEPTEMBER 18 2025.....SUNRISE 6:54 AM PDT SUNSET 7:12 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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