Climatological Report (Daily)
Issued by NWS
Issued by NWS
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607
CDUS46 KSGX 170931
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
231 AM PDT FRI OCT 17 2025
...................................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR OCTOBER 16 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 78 3:24 PM 102 2020 82 -4 66
MINIMUM 52 6:18 AM 51 1998 57 -5 60
AVERAGE 65 70 -5 63
PRECIPITATION (IN)
YESTERDAY 0.00 0.05 2015 0.01 -0.01 0.00
MONTH TO DATE 1.08 0.16 0.92 0.00
SINCE JUL 1 1.20 0.34 0.86 T
SINCE OCT 1 1.08 0.16 0.92 0.00
SINCE JAN 1 7.27 8.70 -1.43 16.29
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 2
MONTH TO DATE 12 3 9 2
SINCE SEP 1 12 4 8 2
SINCE JUL 1 12 4 8 2
COOLING
YESTERDAY 0 5 -5 0
MONTH TO DATE 72 113 -41 190
SINCE SEP 1 472 491 -19 576
SINCE JAN 1 1861 1864 -3 1950
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION W (260)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 4.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 1:00 AM
LOWEST 25 3:00 PM
AVERAGE 53
..........................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 101 2012
MINIMUM TEMPERATURE (F) 57 52 2000
2018
SUNRISE AND SUNSET
OCTOBER 17 2025.......SUNRISE 6:57 AM PDT SUNSET 6:13 PM PDT
OCTOBER 18 2025.......SUNRISE 6:58 AM PDT SUNSET 6:12 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$