474
CDUS46 KMTR 210027
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
527 PM PDT WED MAY 20 2026
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 20 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 73 1:01 PM 93 1988 69 4 65
MINIMUM 53 5:08 AM 45 1950 52 1 51
1976
1982
AVERAGE 63 60 3 58
PRECIPITATION (IN)
TODAY 0.00 1.53 1957 0.02 -0.02 0.00
MONTH TO DATE 0.11 0.35 -0.24 0.11
SINCE OCT 1 19.38 19.26 0.12 16.11
SINCE JAN 1 10.53 12.29 -1.76 7.55
SNOWFALL (IN)
TODAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 2 5 -3 7
MONTH TO DATE 102 119 -17 109
SINCE MAR 1 375 649 -274 663
SINCE JUL 1 1723 2328 -605 2196
COOLING
TODAY 0 0 0 0
MONTH TO DATE 6 0 6 2
SINCE MAR 1 42 6 36 5
SINCE JAN 1 43 6 37 5
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 10.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 4:00 AM
LOWEST 46 1:00 PM
AVERAGE 65
......................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 92 2000
MINIMUM TEMPERATURE (F) 52 45 1962
1974
SUNRISE AND SUNSET
MAY 20 2026...........SUNRISE 5:56 AM PDT SUNSET 8:17 PM PDT
MAY 21 2026...........SUNRISE 5:55 AM PDT SUNSET 8:17 PM PDT
- 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