CDUS43 KLOT 270644 CLIORD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 144 AM CDT MON OCT 27 2025 ................................... ...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 26 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 59 11:56 AM 84 1963 58 1 59 MINIMUM 44 6:37 AM 22 1887 42 2 43 1942 AVERAGE 52 50 2 51 PRECIPITATION (IN) YESTERDAY 0.00 2.18 2019 0.11 -0.11 0.00 MONTH TO DATE 2.53 2.90 -0.37 1.15 SINCE SEP 1 3.02 6.09 -3.07 2.47 SINCE JAN 1 25.47 32.80 -7.33 29.33 SNOWFALL (IN) YESTERDAY 0.0 1.9 1957 0.0 0.0 0.0 MONTH TO DATE 0.0 0.1 -0.1 0.0 SINCE SEP 1 0.0 0.1 -0.1 0.0 SINCE JUL 1 0.0 0.1 -0.1 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 13 15 -2 14 MONTH TO DATE 185 275 -90 159 SINCE SEP 1 217 352 -135 174 SINCE JUL 1 222 358 -136 174 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 57 12 45 16 SINCE SEP 1 223 128 95 206 SINCE JAN 1 1215 1000 215 1192 ................................................................... WIND (MPH) HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (80) HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (90) AVERAGE WIND SPEED 9.3 SKY COVER AVERAGE SKY COVER 0.3 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 74 6:00 AM LOWEST 44 11:00 AM AVERAGE 59 .......................................................... THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 58 83 1927 MINIMUM TEMPERATURE (F) 42 24 1942 SUNRISE AND SUNSET OCTOBER 27 2025.......SUNRISE 7:18 AM CDT SUNSET 5:52 PM CDT OCTOBER 28 2025.......SUNRISE 7:20 AM CDT SUNSET 5:50 PM CDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$