CDUS43 KLOT 120635 CLIORD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 1235 AM CST FRI DEC 12 2025 ................................... ...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 11 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 27 5:27 PM 61 1949 38 -11 32 MINIMUM 23 9:02 AM -5 1972 26 -3 11 AVERAGE 25 32 -7 22 PRECIPITATION (IN) YESTERDAY 0.00 1.73 1949 0.07 -0.07 T MONTH TO DATE 0.72 0.83 -0.11 T SINCE DEC 1 0.72 0.83 -0.11 T SINCE JAN 1 28.44 36.58 -8.14 32.99 SNOWFALL (IN) YESTERDAY 0.0 9.5 2000 0.2 -0.2 T MONTH TO DATE 6.9 2.4 4.5 0.2 SINCE DEC 1 6.9 2.4 4.5 0.2 SINCE JUL 1 17.3 4.4 12.9 3.1 SNOW DEPTH 1 DEGREE DAYS HEATING YESTERDAY 40 33 7 43 MONTH TO DATE 450 349 101 386 SINCE DEC 1 450 349 101 386 SINCE JUL 1 1419 1500 -81 1153 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1215 1003 212 1212 ................................................................... WIND (MPH) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (320) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (320) AVERAGE WIND SPEED 6.2 SKY COVER AVERAGE SKY COVER 1.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 71 10:00 PM LOWEST 57 1:00 PM AVERAGE 64 .......................................................... THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 37 61 1877 MINIMUM TEMPERATURE (F) 25 -8 2000 SUNRISE AND SUNSETDECEMBER 12 2025......SUNRISE 7:10 AM CST SUNSET 4:20 PM CST DECEMBER 13 2025......SUNRISE 7:11 AM CST SUNSET 4:21 PM CST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$