493
CDUS46 KMTR 190827
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
127 AM PDT TUE MAY 19 2026
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 18 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 80 2:04 PM 85 1978 68 12 66
MINIMUM 56 11:21 PM 42 1950 52 4 50
1974
AVERAGE 68 60 8 58
PRECIPITATION (IN)
YESTERDAY 0.00 1.23 1957 0.02 -0.02 0.00
MONTH TO DATE 0.11 0.32 -0.21 0.11
SINCE OCT 1 19.38 19.23 0.15 16.11
SINCE JAN 1 10.53 12.26 -1.73 7.55
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 0 5 -5 7
MONTH TO DATE 100 109 -9 98
SINCE MAR 1 373 639 -266 652
SINCE JUL 1 1721 2318 -597 2185
COOLING
YESTERDAY 3 0 3 0
MONTH TO DATE 3 0 3 2
SINCE MAR 1 39 6 33 5
SINCE JAN 1 40 6 34 5
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION N (340)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 16.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 64 11:00 PM
LOWEST 20 2:00 PM
AVERAGE 42
......................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 86 1952
1978
1983
MINIMUM TEMPERATURE (F) 52 42 1950
SUNRISE AND SUNSET
MAY 19 2026...........SUNRISE 5:57 AM PDT SUNSET 8:16 PM PDT
MAY 20 2026...........SUNRISE 5:56 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.
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