275
CDUS46 KSGX 210922
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
222 AM PDT THU MAY 21 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 20 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 91 2:15 PM 98 2000 80 11 94
MINIMUM 60 4:46 AM 51 2011 56 4 59
AVERAGE 76 68 8 77
PRECIPITATION (IN)
YESTERDAY 0.00 0.20 2002 0.01 -0.01 0.00
MONTH TO DATE 0.17 0.24 -0.07 0.25
SINCE JUL 1 12.16 11.56 0.60 6.12
SINCE OCT 1 12.04 11.38 0.66 6.12
SINCE JAN 1 5.02 8.28 -3.26 5.97
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 11 29 -18 32
SINCE MAR 1 67 306 -239 376
SINCE JUL 1 631 1280 -649 1134
COOLING
YESTERDAY 11 4 7 12
MONTH TO DATE 80 70 10 88
SINCE MAR 1 352 150 202 145
SINCE JAN 1 395 163 232 164
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 6.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 28 12:00 AM
LOWEST 10 11:00 AM
AVERAGE 19
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THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 101 2000
MINIMUM TEMPERATURE (F) 56 47 2002
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 5:45 AM PDT SUNSET 7:50 PM PDT
MAY 22 2026...........SUNRISE 5:44 AM PDT SUNSET 7:50 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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