


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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866 CDUS43 KLOT 130635 CLIMDW CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 135 AM CDT WED AUG 13 2025 ................................... ...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 12 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1928 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 88 12:03 PM 100 1995 83 5 81 MINIMUM 72 3:22 PM 50 1930 67 5 61 AVERAGE 80 75 5 71 PRECIPITATION (IN) YESTERDAY 0.18 2.21 2016 0.13 0.05 0.00 MONTH TO DATE 0.35 1.49 -1.14 0.94 SINCE JUN 1 12.38 9.05 3.33 10.69 SINCE JAN 1 21.95 21.53 0.42 26.67 DEGREE DAYS HEATING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE JUN 1 9 25 -16 3 SINCE JUL 1 0 1 -1 0 COOLING YESTERDAY 15 10 5 6 MONTH TO DATE 166 127 39 126 SINCE JUN 1 934 702 232 800 SINCE JAN 1 985 784 201 913 ................................................................... WIND (MPH) HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (190) AVERAGE WIND SPEED 7.0 SKY COVER AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. THUNDERSTORM LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 91 10:00 PM LOWEST 59 12:00 PM AVERAGE 75 .......................................................... THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 83 101 1936 MINIMUM TEMPERATURE (F) 67 52 1967 SUNRISE AND SUNSET AUGUST 13 2025........SUNRISE 5:58 AM CDT SUNSET 7:53 PM CDT AUGUST 14 2025........SUNRISE 5:59 AM CDT SUNSET 7:52 PM CDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$