384
CDUS46 KMTR 090829
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT TUE SEP 09 2025
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 8 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 78 3:12 PM 100 1984 75 3 71
MINIMUM 61 5:20 AM 48 1946 56 5 51
AVERAGE 70 66 4 61
PRECIPITATION (IN)
YESTERDAY T 0.17 1985 0.00 0.00 0.00
MONTH TO DATE T 0.01 -0.01 0.00
SINCE OCT 1 16.11 19.58 -3.47 20.23
SINCE JAN 1 7.55 12.61 -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 0 1 -1 4
MONTH TO DATE 1 10 -9 13
SINCE SEP 1 1 10 -9 13
SINCE JUL 1 91 112 -21 143
COOLING
YESTERDAY 5 2 3 0
MONTH TO DATE 18 16 2 3
SINCE SEP 1 18 16 2 3
SINCE JAN 1 68 126 -58 77
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 52 2:00 PM
AVERAGE 75
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THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 92 1951
MINIMUM TEMPERATURE (F) 56 46 1946
SUNRISE AND SUNSET
SEPTEMBER 9 2025.....SUNRISE 6:47 AM PDT SUNSET 7:26 PM PDT
SEPTEMBER 10 2025.....SUNRISE 6:48 AM PDT SUNSET 7:24 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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