723
CDUS46 KMTR 180937
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
237 AM PDT MON MAY 18 2026
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 17 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 73 6:03 PM 93 1997 68 5 63
2009
MINIMUM 50 5:12 AM 45 1966 52 -2 52
AVERAGE 62 60 2 58
PRECIPITATION (IN)
YESTERDAY 0.00 0.24 1994 0.01 -0.01 0.00
MONTH TO DATE 0.11 0.30 -0.19 0.11
SINCE OCT 1 19.38 19.21 0.17 16.11
SINCE JAN 1 10.53 12.24 -1.71 7.55
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 3 5 -2 7
MONTH TO DATE 100 104 -4 91
SINCE MAR 1 373 634 -261 645
SINCE JUL 1 1721 2313 -592 2178
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 2
SINCE MAR 1 36 6 30 5
SINCE JAN 1 37 6 31 5
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 16.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 5:00 AM
LOWEST 28 11:00 PM
AVERAGE 54
......................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 85 1978
MINIMUM TEMPERATURE (F) 52 42 1950
1974
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 5:58 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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