Climatological Report (Daily)
Issued by NWS
Issued by NWS
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297
CDUS46 KMTR 190028
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
528 PM PDT TUE AUG 18 2026
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 18 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 70 2:32 PM 85 1978 74 -4 74
MINIMUM 57 5:46 AM 48 1957 57 0 58
AVERAGE 64 65 -1 66
PRECIPITATION (IN)
TODAY 0.00 0.35 1976 0.00 0.00 0.00
MONTH TO DATE 0.03 0.02 0.01 T
SINCE OCT 1 19.62 19.55 0.07 16.11
SINCE JAN 1 10.77 12.58 -1.81 7.55
SNOWFALL (IN)
TODAY MM 0.0
MONTH TO DATE T
SINCE JUN 1 T
SINCE JUL 1 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 1 1 0 0
MONTH TO DATE 8 28 -20 17
SINCE JUN 1 118 183 -65 229
SINCE JUL 1 58 86 -28 86
COOLING
TODAY 0 1 -1 1
MONTH TO DATE 11 18 -7 11
SINCE JUN 1 63 67 -4 13
SINCE JAN 1 106 87 19 19
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 10.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 5:00 AM
LOWEST 65 2:00 PM
AVERAGE 79
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 89 1964
MINIMUM TEMPERATURE (F) 57 49 1955
SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE 6:28 AM PDT SUNSET 7:58 PM PDT
AUGUST 19 2026........SUNRISE 6:29 AM PDT SUNSET 7:57 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$