Climatological Report (Daily)
Issued by NWS
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CDUS46 KMTR 150838
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
138 AM PDT MON SEP 15 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 14 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 74 1:58 PM 103 1971 75 -1 70
MINIMUM 60 11:59 PM 46 1947 56 4 MM
AVERAGE 67 66 1 MM
PRECIPITATION (IN)
YESTERDAY 0.00 T 1997 0.01 -0.01 0.00
2009
2015
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)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE SEP 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 MM
MONTH TO DATE 2 16 -14 32
SINCE SEP 1 2 16 -14 32
SINCE JUL 1 92 118 -26 162
COOLING
YESTERDAY 2 2 0 MM
MONTH TO DATE 29 28 1 3
SINCE SEP 1 29 28 1 3
SINCE JAN 1 79 138 -59 77
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 12.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 PM
LOWEST 71 2:00 PM
AVERAGE 82
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 98 1971
MINIMUM TEMPERATURE (F) 56 48 1970
SUNRISE AND SUNSET
SEPTEMBER 15 2025.....SUNRISE 6:52 AM PDT SUNSET 7:17 PM PDT
SEPTEMBER 16 2025.....SUNRISE 6:53 AM PDT SUNSET 7:15 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$