Climatological Report (Daily)
Issued by NWS
Issued by NWS
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746
CDUS46 KSGX 180952
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
252 AM PDT SAT OCT 18 2025
...................................
...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR OCTOBER 17 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 84 3:28 PM 101 2012 82 2 68
MINIMUM 54 2:56 AM 52 2000 57 -3 60
2018
AVERAGE 69 70 -1 64
PRECIPITATION (IN)
YESTERDAY 0.00 0.87 2005 0.02 -0.02 T
MONTH TO DATE 1.08 0.18 0.90 T
SINCE JUL 1 1.20 0.36 0.84 T
SINCE OCT 1 1.08 0.18 0.90 T
SINCE JAN 1 7.27 8.72 -1.45 16.29
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 1
MONTH TO DATE 12 4 8 3
SINCE SEP 1 12 5 7 3
SINCE JUL 1 12 5 7 3
COOLING
YESTERDAY 4 5 -1 0
MONTH TO DATE 76 118 -42 190
SINCE SEP 1 476 496 -20 576
SINCE JAN 1 1865 1869 -4 1950
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (340)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 6.2
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 72 3:00 AM
LOWEST 15 4:00 PM
AVERAGE 44
..........................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 101 2023
MINIMUM TEMPERATURE (F) 57 44 1998
SUNRISE AND SUNSET
OCTOBER 18 2025.......SUNRISE 6:58 AM PDT SUNSET 6:12 PM PDT
OCTOBER 19 2025.......SUNRISE 6:59 AM PDT SUNSET 6:11 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$