National Weather Service Text Product
AFOS product CLISFO
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLISFO
Product Timestamp: 2025-05-22 08:40 UTC
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549
CDUS46 KMTR 220840
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
140 AM PDT THU MAY 22 2025
...................................
...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 21 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 72 11:30 AM 92 2000 69 3 77
MINIMUM 49 4:38 AM 45 1962 52 -3 52
1974
AVERAGE 61 60 1 65
PRECIPITATION (IN)
YESTERDAY 0.00 0.24 2006 0.01 -0.01 0.00
MONTH TO DATE 0.11 0.36 -0.25 0.95
SINCE OCT 1 16.11 19.27 -3.16 20.13
SINCE JAN 1 7.55 12.30 -4.75 14.80
SNOWFALL (IN)
YESTERDAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
YESTERDAY 4 5 -1 0
MONTH TO DATE 113 124 -11 92
SINCE MAR 1 667 654 13 581
SINCE JUL 1 2200 2333 -133 1722
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 11 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 13.2
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 4:00 AM
LOWEST 47 4:00 PM
AVERAGE 67
..........................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 83 1954
MINIMUM TEMPERATURE (F) 52 44 1952
SUNRISE AND SUNSET
MAY 22 2025...........SUNRISE 5:55 AM PDT SUNSET 8:18 PM PDT
MAY 23 2025...........SUNRISE 5:54 AM PDT SUNSET 8:19 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$