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. $$