870
CDUS46 KSGX 280924
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
224 AM PDT THU MAY 28 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 27 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 70 12:41 PM 99 2000 81 -11 84
MINIMUM 54 11:47 PM 46 1998 57 -3 60
AVERAGE 62 69 -7 72
PRECIPITATION (IN)
YESTERDAY 0.02R 0.01 2001 0.00 0.02 0.00
MONTH TO DATE 0.19 0.28 -0.09 0.25
SINCE JUL 1 12.18 11.60 0.58 6.12
SINCE OCT 1 12.06 11.42 0.64 6.12
SINCE JAN 1 5.04 8.32 -3.28 5.97
DEGREE DAYS
HEATING
YESTERDAY 3 1 2 0
MONTH TO DATE 14 36 -22 32
SINCE MAR 1 70 313 -243 376
SINCE JUL 1 634 1287 -653 1134
COOLING
YESTERDAY 0 5 -5 7
MONTH TO DATE 102 99 3 134
SINCE MAR 1 374 179 195 191
SINCE JAN 1 417 192 225 210
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 8.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 5:00 AM
LOWEST 40 12:00 PM
AVERAGE 60
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 103 2003
MINIMUM TEMPERATURE (F) 57 50 2010
2019
SUNRISE AND SUNSET
MAY 28 2026...........SUNRISE 5:42 AM PDT SUNSET 7:54 PM PDT
MAY 29 2026...........SUNRISE 5:41 AM PDT SUNSET 7:55 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