543
CDUS46 KMTR 270831
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
131 AM PDT SAT SEP 27 2025
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 26 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 12:35 PM 95 1958 75 -1 69
MINIMUM 58 3:47 AM 46 1948 56 2 56
AVERAGE 66 65 1 63
PRECIPITATION (IN)
YESTERDAY 0.00 0.27 1972 0.01 -0.01 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 0 2 -2 2
MONTH TO DATE 2 36 -34 67
SINCE SEP 1 2 36 -34 67
SINCE JUL 1 92 138 -46 197
COOLING
YESTERDAY 1 2 -1 0
MONTH TO DATE 70 52 18 12
SINCE SEP 1 70 52 18 12
SINCE JAN 1 120 162 -42 86
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 12:00 AM
LOWEST 55 12:00 PM
AVERAGE 69
......................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 96 1958
2010
MINIMUM TEMPERATURE (F) 55 47 1948
1955
SUNRISE AND SUNSET
SEPTEMBER 27 2025.....SUNRISE 7:02 AM PDT SUNSET 6:58 PM PDT
SEPTEMBER 28 2025.....SUNRISE 7:03 AM PDT SUNSET 6:57 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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