National Weather Service Text Product
AFOS product CLISFO
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLISFO
Product Timestamp: 2025-09-14 08:37 UTC
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837
CDUS46 KMTR 140837
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
137 AM PDT SUN SEP 14 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 13 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 68 4:03 PM 101 1971 75 -7 73
MINIMUM 60 8:51 AM 47 1947 56 4 53
AVERAGE 64 66 -2 63
PRECIPITATION (IN)
YESTERDAY 0.00 0.27 2009 0.00 0.00 0.00
MONTH TO DATE 0.02 0.01 0.01 0.00
SINCE OCT 1 16.13 19.58 -3.45 20.23
SINCE JAN 1 7.57 12.61 -5.04 14.90
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE SEP 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 1 1 0 2
MONTH TO DATE 2 15 -13 32
SINCE SEP 1 2 15 -13 32
SINCE JUL 1 92 117 -25 162
COOLING
YESTERDAY 0 2 -2 0
MONTH TO DATE 27 26 1 3
SINCE SEP 1 27 26 1 3
SINCE JAN 1 77 136 -59 77
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION W (270)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 13.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 11:00 PM
LOWEST 63 4:00 PM
AVERAGE 75
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 103 1971
MINIMUM TEMPERATURE (F) 56 46 1947
SUNRISE AND SUNSET
SEPTEMBER 14 2025.....SUNRISE 6:51 AM PDT SUNSET 7:18 PM PDT
SEPTEMBER 15 2025.....SUNRISE 6:52 AM PDT SUNSET 7:17 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$