CDUS43 KLOT 160634 CLIDPA CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 1234 AM CST TUE DEC 16 2025 ................................... ...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 15 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1997 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 21 6:29 PM 65 2021 35 -14 45 MINIMUM 1 1:49 AM -3 2016 22 -21 40 AVERAGE 11 28 -17 43 PRECIPITATION (IN) YESTERDAY 0.00 0.31 2012 0.06 -0.06 0.01 MONTH TO DATE 0.39 0.90 -0.51 0.26 SINCE DEC 1 0.39 0.90 -0.51 0.26 SINCE JAN 1 26.09 32.46 -6.37 30.09 DEGREE DAYS HEATING YESTERDAY 54 37 17 22 MONTH TO DATE 695 515 180 560 SINCE DEC 1 695 515 180 560 SINCE JUL 1 1778 1801 -23 1474 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1084 823 261 927 ................................................................... WIND (MPH) HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (180) AVERAGE WIND SPEED 10.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 87 11:00 PM LOWEST 61 12:00 PM AVERAGE 74 .......................................................... THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 35 65 2021 MINIMUM TEMPERATURE (F) 21 3 2013 SUNRISE AND SUNSET DECEMBER 16 2025......SUNRISE 7:15 AM CST SUNSET 4:23 PM CST DECEMBER 17 2025......SUNRISE 7:15 AM CST SUNSET 4:23 PM CST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$