Climatological Report (Daily)
Issued by NWS
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CDUS46 KMTR 180833
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
133 AM PDT FRI SEP 18 2026
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 72 3:43 PM 94 1984 75 -3 81
MINIMUM 60 11:59 PM 50 1945 56 4 57
1946
1988
AVERAGE 66 65 1 69
PRECIPITATION (IN)
YESTERDAY 0.00 0.28 1982 0.00 0.00 0.00
MONTH TO DATE 0.01 0.02 -0.01 0.02
SINCE OCT 1 19.63 19.59 0.04 16.13
SINCE JAN 1 10.78 12.62 -1.84 7.57
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 0
MONTH TO DATE 3 19 -16 2
SINCE SEP 1 3 19 -16 2
SINCE JUL 1 77 121 -44 92
COOLING
YESTERDAY 1 2 -1 4
MONTH TO DATE 50 34 16 40
SINCE SEP 1 50 34 16 40
SINCE JAN 1 161 144 17 90
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (260)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 10:00 PM
LOWEST 55 2:00 PM
AVERAGE 71
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 93 2009
MINIMUM TEMPERATURE (F) 56 46 1955
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:54 AM PDT SUNSET 7:12 PM PDT
SEPTEMBER 19 2026.....SUNRISE 6:55 AM PDT SUNSET 7:11 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$