389
CDUS46 KMTR 190037
CLIHWD
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
437 PM PST THU DEC 18 2025
...............................
..THE HAYWARD AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 58 1:34 PM 69 2023 59 -1 61
MINIMUM 50 4:30 AM 32 2016 43 7 42
AVERAGE 54 51 3 52
PRECIPITATION (IN)
TODAY 0.00 0.00
MONTH TO DATE 0.21 2.69
SINCE OCT 1 5.44 5.02
SINCE JAN 1 12.99 22.02
DEGREE DAYS
HEATING
TODAY 11 13
MONTH TO DATE 272 181
SINCE DEC 1 272 181
SINCE JUL 1 600 464
COOLING
TODAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 295 713
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 2.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 83 1:00 PM
AVERAGE 92
......................................................
THE HAYWARD AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 74 1999
MINIMUM TEMPERATURE (F) 43 31 2006
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 7:18 AM PST SUNSET 4:52 PM PST
DECEMBER 19 2025......SUNRISE 7:19 AM PST SUNSET 4:53 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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