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237
CDUS46 KMTR 190828
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
128 AM PDT MON MAY 19 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 18 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 66 12:18 PM 85 1978 68 -2 69
MINIMUM 50 4:54 AM 42 1950 52 -2 54
1974
AVERAGE 58 60 -2 62
PRECIPITATION (IN)
YESTERDAY 0.00 1.23 1957 0.02 -0.02 0.00
MONTH TO DATE 0.11 0.32 -0.21 0.95
SINCE OCT 1 16.11 19.23 -3.12 20.13
SINCE JAN 1 7.55 12.26 -4.71 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 98 109 -11 85
SINCE MAR 1 652 639 13 574
SINCE JUL 1 2185 2318 -133 1715
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 14 RESULTANT WIND DIRECTION W (280)
HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 15.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 12:00 AM
LOWEST 48 12:00 PM
AVERAGE 67
..........................................................
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 2025...........SUNRISE 5:57 AM PDT SUNSET 8:16 PM PDT
MAY 20 2025...........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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