900
CDUS46 KSGX 240918
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
218 AM PDT SUN MAY 24 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 23 2026
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)
YESTERDAY
MAXIMUM 81 3:39 PM 97 2001 81 0 83
MINIMUM 58 1:06 AM 50 2010 57 1 59
AVERAGE 70 68 2 71
PRECIPITATION (IN)
YESTERDAY 0.00 0.19 2008 0.00 0.00 0.00
MONTH TO DATE 0.17 0.26 -0.09 0.25
SINCE JUL 1 12.16 11.58 0.58 6.12
SINCE OCT 1 12.04 11.40 0.64 6.12
SINCE JAN 1 5.02 8.30 -3.28 5.97
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 11 32 -21 32
SINCE MAR 1 67 309 -242 376
SINCE JUL 1 631 1283 -652 1134
COOLING
YESTERDAY 5 4 1 6
MONTH TO DATE 98 82 16 118
SINCE MAR 1 370 162 208 175
SINCE JAN 1 413 175 238 194
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WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 6.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 12:00 AM
LOWEST 35 3:00 PM
AVERAGE 61
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THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 97 2021
MINIMUM TEMPERATURE (F) 57 48 2010
SUNRISE AND SUNSET
MAY 24 2026...........SUNRISE 5:43 AM PDT SUNSET 7:52 PM PDT
MAY 25 2026...........SUNRISE 5:43 AM PDT SUNSET 7:52 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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