Climatological Report (Daily)
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
540
CDUS46 KSGX 030939
CLIONT

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
239 AM PDT WED SEP 03 2025

...................................

...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR SEPTEMBER 2 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        102   3:00 PM 110    2007  95      7       98
  MINIMUM         71        MM  56    1999  65      6       69
  AVERAGE         87                        80      7       84

PRECIPITATION (IN)
  YESTERDAY        0.00          T    2022   0.00   0.00     0.00
  MONTH TO DATE    0.00                      0.00   0.00     0.00
  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 SEP 1      0                         0      0        0
  SINCE JUL 1      0                         0      0        0

 COOLING
  YESTERDAY       22                        15      7       19
  MONTH TO DATE   42                        30     12       35
  SINCE SEP 1     42                        30     12       35
  SINCE JAN 1   1431                      1403     28     1409
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   2   RESULTANT WIND DIRECTION   E (100)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     5.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    64           5:00 AM
 LOWEST     18           3:00 PM
 AVERAGE    41

..........................................................


THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   94       110      2007
 MINIMUM TEMPERATURE (F)   65        56      2000


SUNRISE AND SUNSET
SEPTEMBER  3 2025.....SUNRISE   6:26 AM PDT   SUNSET   7:13 PM PDT
SEPTEMBER  4 2025.....SUNRISE   6:26 AM PDT   SUNSET   7:12 PM PDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




$$