800
CDUS46 KSGX 170025
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
525 PM PDT FRI MAY 16 2025
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 16 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 79 1:48 PM 100 2008 80 -1 70
MINIMUM 54 3:54 AM 46 2011 56 -2 55
AVERAGE 67 68 -1 63
PRECIPITATION (IN)
TODAY 0.00 T 2016 0.01 -0.01 T
2021
2024
MONTH TO DATE 0.24 0.21 0.03 0.15
SINCE JUL 1 6.11 11.53 -5.42 19.80
SINCE OCT 1 6.11 11.35 -5.24 17.64
SINCE JAN 1 5.96 8.25 -2.29 16.29
DEGREE DAYS
HEATING
TODAY 0 1 -1 2
MONTH TO DATE 28 25 3 20
SINCE MAR 1 372 302 70 410
SINCE JUL 1 1130 1276 -146 1298
COOLING
TODAY 2 4 -2 0
MONTH TO DATE 68 54 14 20
SINCE MAR 1 125 134 -9 45
SINCE JAN 1 144 147 -3 45
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 AM
LOWEST 37 2:00 PM
AVERAGE 65
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 102 2008
MINIMUM TEMPERATURE (F) 56 45 2006
SUNRISE AND SUNSET
MAY 16 2025...........SUNRISE 5:48 AM PDT SUNSET 7:46 PM PDT
MAY 17 2025...........SUNRISE 5:47 AM PDT SUNSET 7:47 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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