363
CDUS46 KMTR 190031
CLISFO
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
531 PM PDT MON MAY 18 2026
...............................
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 18 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 80 2:04 PM 85 1978 68 12 66
MINIMUM 65 7:15 AM 42 1950 52 13 50
1974
AVERAGE 73 60 13 58
PRECIPITATION (IN)
TODAY 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)
TODAY MM 0.0
MONTH TO DATE T
SINCE MAR 1 T
SINCE JUL 1 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 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
TODAY 8 0 8 0
MONTH TO DATE 8 0 8 2
SINCE MAR 1 44 6 38 5
SINCE JAN 1 45 6 39 5
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 16 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 18.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 45 3:00 AM
LOWEST 20 2:00 PM
AVERAGE 33
......................................................
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 86 1952
1978
1983
MINIMUM TEMPERATURE (F) 52 42 1950
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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