Climatological Report (Daily)
Issued by NWS
Issued by NWS
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563
CDUS46 KSGX 050021
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
521 PM PDT THU SEP 04 2025
...................................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR SEPTEMBER 4 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 97 1:53 PM 109 2022 94 3 106
MINIMUM 71 5:15 AM 57 2000 65 6 72
AVERAGE 84 80 4 89
PRECIPITATION (IN)
TODAY 0.00 0.00 MM 0.00 0.00 0.00
MONTH TO DATE 0.00 0.01 -0.01 0.00
SINCE JUL 1 T 0.09 -0.09 T
SINCE OCT 1 6.22 11.55 -5.33 17.64
SINCE JAN 1 6.07 8.45 -2.38 16.29
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
TODAY 19 15 4 24
MONTH TO DATE 82 60 22 79
SINCE SEP 1 82 60 22 79
SINCE JAN 1 1471 1433 38 1453
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 5.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 68 6:00 AM
LOWEST 28 1:00 PM
AVERAGE 48
..........................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 94 118 2020
MINIMUM TEMPERATURE (F) 65 57 2005
SUNRISE AND SUNSET
SEPTEMBER 4 2025.....SUNRISE 6:26 AM PDT SUNSET 7:12 PM PDT
SEPTEMBER 5 2025.....SUNRISE 6:27 AM PDT SUNSET 7:10 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$