769
CDUS46 KSGX 011021
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
221 AM PST THU JAN 01 2026
...............................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 31 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 64 10:47 AM 79 2011 67 -3 66
MINIMUM 53 8:46 PM 30 2010 44 9 44
AVERAGE 59 55 4 55
PRECIPITATION (IN)
YESTERDAY 0.30 1.21 2022 0.07 0.23 0.00
MONTH TO DATE 1.93 1.89 0.04 T
SINCE JUL 1 7.14 3.28 3.86 0.15
SINCE OCT 1 7.02 3.10 3.92 0.15
SINCE JAN 1 13.21 11.64 1.57 16.44
DEGREE DAYS
HEATING
YESTERDAY 6 10 -4 10
MONTH TO DATE 139 301 -162 196
SINCE DEC 1 139 301 -162 196
SINCE JUL 1 250 463 -213 347
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 9 2 7 5
SINCE DEC 1 9 2 7 5
SINCE JAN 1 2014 1969 45 2032
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NE (50)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 1.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 9:00 PM
LOWEST 34 2:00 AM
AVERAGE 66
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 84 2012
MINIMUM TEMPERATURE (F) 44 31 2015
2016
SUNRISE AND SUNSET
JANUARY 1 2026.......SUNRISE 6:56 AM PST SUNSET 4:52 PM PST
JANUARY 2 2026.......SUNRISE 6:56 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page