Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 220028
CLISFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
528 PM PDT THU AUG 21 2025
...................................
...THE SAN FRANCISCO DWTN CA CLIMATE SUMMARY FOR AUGUST 21 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1850 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 77 2:43 PM 88 1891 69 8 67
MINIMUM 57 5:43 AM 47 1898 56 1 57
AVERAGE 67 62 5 62
PRECIPITATION (IN)
TODAY 0.00 0.22 1951 0.00 0.00 0.00
MONTH TO DATE 0.03 0.04 -0.01 0.00
SINCE OCT 1 19.88 22.77 -2.89 25.72
SINCE JAN 1 9.68 14.47 -4.79 19.04
DEGREE DAYS
HEATING
TODAY 0 4 -4 3
MONTH TO DATE 63 84 -21 81
SINCE JUN 1 439 405 34 331
SINCE JUL 1 226 236 -10 176
COOLING
TODAY 2 1 1 0
MONTH TO DATE 3 2 1 0
SINCE JUN 1 3 21 -18 13
SINCE JAN 1 9 36 -27 19
...................................................................
THE SAN FRANCISCO DWTN CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 92 1891
MINIMUM TEMPERATURE (F) 56 50 1898
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 6:31 AM PDT SUNSET 7:54 PM PDT
AUGUST 22 2025........SUNRISE 6:32 AM PDT SUNSET 7:53 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$