359
CDUS46 KSGX 200020
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
420 PM PST FRI DEC 19 2025
...............................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 19 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 77 2:38 PM 84 2024 66 11 84
MINIMUM 51 6:41 AM 33 2012 43 8 50
2016
AVERAGE 64 55 9 67
PRECIPITATION (IN)
TODAY 0.00 0.54 2010 0.06 -0.06 0.00
MONTH TO DATE 0.00 1.09 -1.09 0.00
SINCE JUL 1 5.21 2.48 2.73 0.15
SINCE OCT 1 5.09 2.30 2.79 0.15
SINCE JAN 1 11.28 10.84 0.44 16.44
DEGREE DAYS
HEATING
TODAY 1 10 -9 0
MONTH TO DATE 54 181 -127 100
SINCE DEC 1 54 181 -127 100
SINCE JUL 1 165 343 -178 251
COOLING
TODAY 0 0 0 2
MONTH TO DATE 9 0 9 5
SINCE DEC 1 9 0 9 5
SINCE JAN 1 2014 1967 47 2032
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 0 RESULTANT WIND DIRECTION SE (140)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 1.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 64 8:00 AM
LOWEST 30 1:00 PM
AVERAGE 47
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 82 2020
MINIMUM TEMPERATURE (F) 43 33 2012
SUNRISE AND SUNSET
DECEMBER 19 2025......SUNRISE 6:51 AM PST SUNSET 4:44 PM PST
DECEMBER 20 2025......SUNRISE 6:52 AM PST SUNSET 4:45 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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