Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KSGX 100031
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
431 PM PST TUE DEC 09 2025
...................................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 9 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 81 3:15 PM 84 2017 67 14 75
MINIMUM 49 3:02 AM 35 2013 44 5 44
AVERAGE 65 55 10 60
PRECIPITATION (IN)
TODAY 0.00 0.29 2006 0.06 -0.06 0.00
MONTH TO DATE 0.00 0.48 -0.48 0.00
SINCE JUL 1 5.21 1.87 3.34 0.15
SINCE OCT 1 5.09 1.69 3.40 0.15
SINCE JAN 1 11.28 10.23 1.05 16.44
DEGREE DAYS
HEATING
TODAY 0 10 -10 5
MONTH TO DATE 45 81 -36 37
SINCE DEC 1 45 81 -36 37
SINCE JUL 1 156 243 -87 188
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 2005 1967 38 2027
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION N (340)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 2.5
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 54 2:00 AM
LOWEST 14 3:00 PM
AVERAGE 34
..........................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 85 2017
MINIMUM TEMPERATURE (F) 44 31 2013
SUNRISE AND SUNSET
DECEMBER 9 2025......SUNRISE 6:45 AM PST SUNSET 4:41 PM PST
DECEMBER 10 2025......SUNRISE 6:45 AM PST SUNSET 4:41 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$