Climatological Report (Daily)
Issued by NWS
Issued by NWS
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167
CDUS46 KSGX 010929
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
229 AM PDT MON SEP 01 2025
...................................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR AUGUST 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 101 2:30 PM 112 2017 95 6 94
MINIMUM 70 5:49 AM 56 1999 65 5 63
AVERAGE 86 80 6 79
PRECIPITATION (IN)
YESTERDAY 0.00 0.13 1998 0.00 0.00 0.00
MONTH TO DATE T 0.03 -0.03 T
SINCE JUL 1 T 0.08 -0.08 T
SINCE OCT 1 6.22 11.54 -5.32 17.64
SINCE JAN 1 6.07 8.44 -2.37 16.29
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 0 4 -4 2
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 21 15 6 14
MONTH TO DATE 506 467 39 508
SINCE JUN 1 1139 1159 -20 1313
SINCE JAN 1 1389 1373 16 1374
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 5.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 55 6:00 AM
LOWEST 20 1:00 PM
AVERAGE 38
..........................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 95 114 2017
MINIMUM TEMPERATURE (F) 65 57 2011
SUNRISE AND SUNSET
SEPTEMBER 1 2025.....SUNRISE 6:24 AM PDT SUNSET 7:16 PM PDT
SEPTEMBER 2 2025.....SUNRISE 6:25 AM PDT SUNSET 7:14 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$