366
CDUS46 KMTR 280828
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
128 AM PDT SUN SEP 28 2025
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 27 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 71 2:26 PM 96 1958 75 -4 86
2010
MINIMUM 57 5:58 AM 47 1948 55 2 55
1955
AVERAGE 64 65 -1 71
PRECIPITATION (IN)
YESTERDAY 0.00 0.81 1957 0.00 0.00 0.00
MONTH TO DATE 0.04 0.05 -0.01 0.00
SINCE OCT 1 16.15 19.62 -3.47 20.23
SINCE JAN 1 7.59 12.65 -5.06 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 2 -1 0
MONTH TO DATE 3 38 -35 67
SINCE SEP 1 3 38 -35 67
SINCE JUL 1 93 140 -47 197
COOLING
YESTERDAY 0 2 -2 6
MONTH TO DATE 70 54 16 18
SINCE SEP 1 70 54 16 18
SINCE JAN 1 120 164 -44 92
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 11.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 6:00 AM
LOWEST 63 2:00 PM
AVERAGE 75
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THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 96 2020
MINIMUM TEMPERATURE (F) 55 47 1947
SUNRISE AND SUNSET
SEPTEMBER 28 2025.....SUNRISE 7:03 AM PDT SUNSET 6:57 PM PDT
SEPTEMBER 29 2025.....SUNRISE 7:04 AM PDT SUNSET 6:55 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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