721
CDUS46 KMTR 180937
CLISFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
237 AM PDT MON MAY 18 2026
...............................
..THE SAN FRANCISCO DWTN CA CLIMATE SUMMARY FOR MAY 17 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1850 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 75 4:43 PM 85 2009 64 11 59
MINIMUM 51 5:43 AM 44 1906 52 -1 50
AVERAGE 63 58 5 55
PRECIPITATION (IN)
YESTERDAY 0.00 0.93 1879 0.02 -0.02 0.00
MONTH TO DATE 0.14 0.44 -0.30 0.15
SINCE OCT 1 20.02 22.26 -2.24 19.75
SINCE JAN 1 11.09 13.96 -2.87 9.55
DEGREE DAYS
HEATING
YESTERDAY 2 8 -6 10
MONTH TO DATE 124 136 -12 127
SINCE MAR 1 435 698 -263 710
SINCE JUL 1 1920 2516 -596 2310
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 4
SINCE MAR 1 43 7 36 6
SINCE JAN 1 46 7 39 6
...............................................................
THE SAN FRANCISCO DWTN CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 64 88 1892
MINIMUM TEMPERATURE (F) 52 46 1896
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 5:57 AM PDT SUNSET 8:15 PM PDT
MAY 19 2026...........SUNRISE 5:57 AM PDT SUNSET 8:16 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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