726
CDUS46 KMTR 180830
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
130 AM PDT SUN MAY 18 2025
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 17 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 63 1:37 PM 93 1997 68 -5 70
2009
MINIMUM 52 11:59 PM 45 1966 52 0 54
AVERAGE 58 60 -2 62
PRECIPITATION (IN)
YESTERDAY 0.00 0.24 1994 0.01 -0.01 0.00
MONTH TO DATE 0.11 0.30 -0.19 0.95
SINCE OCT 1 16.11 19.21 -3.10 20.13
SINCE JAN 1 7.55 12.24 -4.69 14.80
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 7 5 2 3
MONTH TO DATE 91 104 -13 82
SINCE MAR 1 645 634 11 571
SINCE JUL 1 2178 2313 -135 1712
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 2 0 2 10
SINCE MAR 1 5 6 -1 11
SINCE JAN 1 5 6 -1 11
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 24 RESULTANT WIND DIRECTION W (280)
HIGHEST WIND SPEED 40 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 55 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 24.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 1:00 AM
LOWEST 62 11:00 AM
AVERAGE 76
......................................................
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 2025...........SUNRISE 5:57 AM PDT SUNSET 8:15 PM PDT
MAY 19 2025...........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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