621
CDUS46 KSGX 091031
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
231 AM PST FRI JAN 09 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR JANUARY 8 2026
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)
YESTERDAY
MAXIMUM 61 3:16 PM 87 1962 68 -7 66
2007
MINIMUM 45 3:28 AM 33 2000 44 1 48
AVERAGE 53 56 -3 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.67 2005 0.08 -0.08 0.00
MONTH TO DATE 1.02 0.71 0.31 T
SINCE JUL 1 8.16 3.99 4.17 0.15
SINCE OCT 1 8.04 3.81 4.23 0.15
SINCE JAN 1 1.02 0.71 0.31 T
DEGREE DAYS
HEATING
YESTERDAY 12 9 3 8
MONTH TO DATE 62 76 -14 49
SINCE DEC 1 201 380 -179 245
SINCE JUL 1 312 542 -230 396
COOLING
YESTERDAY 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 1 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 5.7
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 93 6:00 AM
LOWEST 17 11:00 PM
AVERAGE 55
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THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 83 2007
MINIMUM TEMPERATURE (F) 44 36 2000
SUNRISE AND SUNSET
JANUARY 9 2026.......SUNRISE 6:57 AM PST SUNSET 4:59 PM PST
JANUARY 10 2026.......SUNRISE 6:57 AM PST SUNSET 5:00 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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