Climatological Report (Daily)
Issued by NWS
Issued by NWS
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068
CDUS46 KMTR 190835
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
135 AM PDT WED AUG 19 2026
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 18 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 70 2:32 PM 85 1978 74 -4 74
MINIMUM 57 11:48 PM 48 1957 57 0 58
AVERAGE 64 65 -1 66
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE JUN 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 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
YESTERDAY 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 11 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 12.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 8:00 PM
LOWEST 65 2:00 PM
AVERAGE 79
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 89 1964
MINIMUM TEMPERATURE (F) 57 49 1955
SUNRISE AND SUNSET
AUGUST 19 2026........SUNRISE 6:29 AM PDT SUNSET 7:57 PM PDT
AUGUST 20 2026........SUNRISE 6:30 AM PDT SUNSET 7:55 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$