248
CDUS46 KSGX 201046
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
246 AM PST SAT DEC 20 2025
...............................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 19 2025...
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)
YESTERDAY
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)
YESTERDAY 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
YESTERDAY 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
YESTERDAY 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 1 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 2.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 9:00 PM
LOWEST 30 1:00 PM
AVERAGE 53
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THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 82 2020
MINIMUM TEMPERATURE (F) 43 33 2012
SUNRISE AND SUNSET
DECEMBER 20 2025......SUNRISE 6:52 AM PST SUNSET 4:45 PM PST
DECEMBER 21 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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