945
CDUS46 KSGX 180009
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
509 PM PDT SAT MAY 17 2025
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 17 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 65 1:29 PM 102 2008 80 -15 71
MINIMUM 56 5:58 AM 45 2006 56 0 55
AVERAGE 61 68 -7 63
PRECIPITATION (IN)
TODAY 0.00 0.04 2011 0.01 -0.01 0.00
MONTH TO DATE 0.24 0.22 0.02 0.15
SINCE JUL 1 6.11 11.54 -5.43 19.80
SINCE OCT 1 6.11 11.36 -5.25 17.64
SINCE JAN 1 5.96 8.26 -2.30 16.29
DEGREE DAYS
HEATING
TODAY 4 1 3 2
MONTH TO DATE 32 26 6 22
SINCE MAR 1 376 303 73 412
SINCE JUL 1 1134 1277 -143 1300
COOLING
TODAY 0 4 -4 0
MONTH TO DATE 68 58 10 20
SINCE MAR 1 125 138 -13 45
SINCE JAN 1 144 151 -7 45
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 8.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 12:00 AM
LOWEST 56 1:00 PM
AVERAGE 72
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 101 2008
MINIMUM TEMPERATURE (F) 56 49 2011
2017
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 5:47 AM PDT SUNSET 7:47 PM PDT
MAY 18 2025...........SUNRISE 5:47 AM PDT SUNSET 7:48 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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