806
CDUS46 KMTR 210838
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
138 AM PDT TUE APR 21 2026
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR APRIL 20 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 66 9:19 AM 91 2009 66 0 63
MINIMUM 54 11:59 PM 38 1967 49 5 49
AVERAGE 60 58 2 56
PRECIPITATION (IN)
YESTERDAY 0.55 0.69 2001 0.04 0.51 0.00
MONTH TO DATE 2.74 1.09 1.65 0.33
SINCE OCT 1 18.89 18.64 0.25 15.96
SINCE JAN 1 10.04 11.67 -1.63 7.40
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 5 8 -3 9
MONTH TO DATE 105 163 -58 151
SINCE MAR 1 207 459 -252 467
SINCE JUL 1 1555 2138 -583 2000
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 3 0 3 0
SINCE MAR 1 36 1 35 3
SINCE JAN 1 37 1 36 3
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 7:00 PM
LOWEST 53 1:00 AM
AVERAGE 73
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THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 86 2009
MINIMUM TEMPERATURE (F) 49 39 1968
SUNRISE AND SUNSET
APRIL 21 2026.........SUNRISE 6:26 AM PDT SUNSET 7:51 PM PDT
APRIL 22 2026.........SUNRISE 6:25 AM PDT SUNSET 7:52 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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