912
CDUS46 KSGX 300923
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
223 AM PDT SAT MAY 30 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 29 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 72 3:15 PM 99 2002 82 -10 81
MINIMUM 55 5:48 AM 49 2010 57 -2 61
AVERAGE 64 69 -5 71
PRECIPITATION (IN)
YESTERDAY 0.01R T 2016 0.00 0.01 0.00
2018
2022
MONTH TO DATE 0.21 0.29 -0.08 0.25
SINCE JUL 1 12.20 11.61 0.59 6.12
SINCE OCT 1 12.08 11.43 0.65 6.12
SINCE JAN 1 5.06 8.33 -3.27 5.97
DEGREE DAYS
HEATING
YESTERDAY 1 0 1 0
MONTH TO DATE 18 37 -19 32
SINCE MAR 1 74 314 -240 376
SINCE JUL 1 638 1288 -650 1134
COOLING
YESTERDAY 0 5 -5 6
MONTH TO DATE 102 109 -7 143
SINCE MAR 1 374 189 185 200
SINCE JAN 1 417 202 215 219
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WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 7.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 4:00 AM
LOWEST 42 3:00 PM
AVERAGE 66
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THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 100 2025
MINIMUM TEMPERATURE (F) 57 49 1998
SUNRISE AND SUNSET
MAY 30 2026...........SUNRISE 5:41 AM PDT SUNSET 7:56 PM PDT
MAY 31 2026...........SUNRISE 5:40 AM PDT SUNSET 7:56 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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