277 CDUS46 KSGX 100031 CLIONT CLIMATE REPORT NATIONAL WEATHER SERVICE SAN DIEGO, CA 431 PM PST TUE DEC 09 2025 ................................... ...THE ONTARIO INTL AIRPORT CA CLIMATE SUMMARY FOR DECEMBER 9 2025... VALID TODAY AS OF 0400 PM LOCAL TIME. CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 81 3:15 PM 84 2017 67 14 75 MINIMUM 49 3:02 AM 35 2013 44 5 44 AVERAGE 65 55 10 60 PRECIPITATION (IN) TODAY 0.00 0.29 2006 0.06 -0.06 0.00 MONTH TO DATE 0.00 0.48 -0.48 0.00 SINCE JUL 1 5.21 1.87 3.34 0.15 SINCE OCT 1 5.09 1.69 3.40 0.15 SINCE JAN 1 11.28 10.23 1.05 16.44 DEGREE DAYS HEATING TODAY 0 10 -10 5 MONTH TO DATE 45 81 -36 37 SINCE DEC 1 45 81 -36 37 SINCE JUL 1 156 243 -87 188 COOLING TODAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 2005 1967 38 2027 ................................................................... WIND (MPH) RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION N (340) HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (20) HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION SW (240) AVERAGE WIND SPEED 2.5 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 54 2:00 AM LOWEST 14 3:00 PM AVERAGE 34 .......................................................... THE ONTARIO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 67 85 2017 MINIMUM TEMPERATURE (F) 44 31 2013 SUNRISE AND SUNSET DECEMBER 9 2025......SUNRISE 6:45 AM PST SUNSET 4:41 PM PST DECEMBER 10 2025......SUNRISE 6:45 AM PST SUNSET 4:41 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$