431
CDUS46 KSGX 190029
CLIONT
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
529 PM PDT MON MAY 18 2026
...............................
..THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR MAY 18 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 83 2:12 PM 101 2008 80 3 74
MINIMUM 56 5:10 AM 49 2011 56 0 55
2017
AVERAGE 70 68 2 65
PRECIPITATION (IN)
TODAY 0.00 0.21 2011 0.01 -0.01 0.00
MONTH TO DATE 0.17 0.23 -0.06 0.25
SINCE JUL 1 12.16 11.55 0.61 6.12
SINCE OCT 1 12.04 11.37 0.67 6.12
SINCE JAN 1 5.02 8.27 -3.25 5.97
DEGREE DAYS
HEATING
TODAY 0 1 -1 0
MONTH TO DATE 11 27 -16 32
SINCE MAR 1 67 304 -237 376
SINCE JUL 1 631 1278 -647 1134
COOLING
TODAY 5 4 1 0
MONTH TO DATE 61 62 -1 68
SINCE MAR 1 333 142 191 125
SINCE JAN 1 376 155 221 144
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION W (260)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 7.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 3:00 AM
LOWEST 9 2:00 PM
AVERAGE 48
......................................................
THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 97 2008
MINIMUM TEMPERATURE (F) 56 46 2011
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 5:47 AM PDT SUNSET 7:47 PM PDT
MAY 19 2026...........SUNRISE 5:46 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page