998
CDUS46 KMTR 180028
CLISFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
428 PM PST WED DEC 17 2025
...............................
..THE SAN FRANCISCO DWTN CA CLIMATE SUMMARY FOR DECEMBER 17 2025
VALID TODAY AS OF 0400 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 61 11:43 AM 69 1996 58 3 55
MINIMUM 53 4:43 AM 39 1924 47 6 48
AVERAGE 57 52 5 52
PRECIPITATION (IN)
TODAY 0.23 3.00 1852 0.16 0.07 0.00
MONTH TO DATE 0.23 2.56 -2.33 3.31
SINCE OCT 1 3.76 6.10 -2.34 7.98
SINCE JAN 1 13.55 20.69 -7.14 27.06
DEGREE DAYS
HEATING
TODAY 8 13 -5 13
MONTH TO DATE 256 204 52 164
SINCE DEC 1 256 204 52 164
SINCE JUL 1 828 932 -104 798
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 76 121 -45 144
...............................................................
THE SAN FRANCISCO DWTN CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 58 68 1910
MINIMUM TEMPERATURE (F) 47 36 1924
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 7:19 AM PST SUNSET 4:53 PM PST
DECEMBER 18 2025......SUNRISE 7:20 AM PST SUNSET 4:53 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page