133
CDUS46 KSGX 010022
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
522 PM PDT SUN MAY 31 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 31 2026
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 89 2:22 PM 96 2006 82 7 96
2025
MINIMUM 59 5:28 AM 52 1998 57 2 64
AVERAGE 74 70 4 80
PRECIPITATION (IN)
TODAY 0.00 T 2025 0.00 0.00 T
MONTH TO DATE 0.21 0.30 -0.09 0.25
SINCE JUL 1 12.20 11.62 0.58 6.12
SINCE OCT 1 12.08 11.44 0.64 6.12
SINCE JAN 1 5.06 8.34 -3.28 5.97
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 18 37 -19 32
SINCE MAR 1 74 314 -240 376
SINCE JUL 1 638 1288 -650 1134
COOLING
TODAY 9 5 4 15
MONTH TO DATE 115 121 -6 174
SINCE MAR 1 387 201 186 231
SINCE JAN 1 430 214 216 250
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 4.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 4:00 AM
LOWEST 28 2:00 PM
AVERAGE 53
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 100 2013
MINIMUM TEMPERATURE (F) 58 51 2011
SUNRISE AND SUNSET
MAY 31 2026...........SUNRISE 5:40 AM PDT SUNSET 7:56 PM PDT
JUNE 1 2026..........SUNRISE 5:40 AM PDT SUNSET 7:57 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page