CDUS43 KLOT 122234 CLIORD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 434 PM CST FRI DEC 12 2025 ................................... ...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 12 2025... VALID TODAY AS OF 0400 PM LOCAL TIME. 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) TODAY MAXIMUM 31 1:53 PM 61 1877 37 -6 15 MINIMUM 20 7:13 AM -8 2000 25 -5 4 AVERAGE 26 31 -5 10 PRECIPITATION (IN) TODAY 0.00 1.76 1972 0.06 -0.06 0.00 MONTH TO DATE 0.72 0.89 -0.17 T SINCE DEC 1 0.72 0.89 -0.17 T SINCE JAN 1 28.44 36.64 -8.20 32.99 SNOWFALL (IN) TODAY 0.0 11.3 1903 0.2 -0.2 0.0 MONTH TO DATE 6.9 2.6 4.3 0.2 SINCE DEC 1 6.9 2.6 4.3 0.2 SINCE JUL 1 17.3 4.6 12.7 3.1 SNOW DEPTH 1 DEGREE DAYS HEATING TODAY 39 34 5 55 MONTH TO DATE 489 383 106 441 SINCE DEC 1 489 383 106 441 SINCE JUL 1 1458 1534 -76 1208 COOLING TODAY 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 W (280) HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (240) AVERAGE WIND SPEED 5.3 SKY COVER AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 77 5:00 AM LOWEST 61 2:00 PM AVERAGE 69 .......................................................... THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 37 67 1975 MINIMUM TEMPERATURE (F) 25 -13 1903 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. $$