742
CDUS46 KSGX 050025
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
425 PM PST SUN JAN 04 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR JANUARY 4 2026
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 58 2:59 PM 85 2012 67 -9 62
MINIMUM 55 1:09 PM 34 2011 44 11 46
2013
AVERAGE 57 56 1 54
PRECIPITATION (IN)
TODAY 0.05 1.18 2008 0.09 -0.04 0.00
MONTH TO DATE 0.98 0.37 0.61 0.00
SINCE JUL 1 8.12 3.65 4.47 0.15
SINCE OCT 1 8.00 3.47 4.53 0.15
SINCE JAN 1 0.98 0.37 0.61 0.00
DEGREE DAYS
HEATING
TODAY 8 10 -2 11
MONTH TO DATE 26 40 -14 24
SINCE DEC 1 165 344 -179 220
SINCE JUL 1 276 506 -230 371
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 1
SINCE DEC 1 9 2 7 6
SINCE JAN 1 0 0 0 1
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION W (260)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 5.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 6:00 AM
LOWEST 87 10:00 AM
AVERAGE 92
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 83 2006
MINIMUM TEMPERATURE (F) 44 34 2009
2011
SUNRISE AND SUNSET
JANUARY 4 2026.......SUNRISE 6:56 AM PST SUNSET 4:55 PM PST
JANUARY 5 2026.......SUNRISE 6:57 AM PST SUNSET 4:56 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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