262
CDUS43 KLOT 210634
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT TUE OCT 21 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 20 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 66 2:46 PM 86 1953 61 5 79
MINIMUM 41 6:09 AM 24 1895 44 -3 51
1930
AVERAGE 54 52 2 65
PRECIPITATION (IN)
YESTERDAY 0.01 1.65 1916 0.10 -0.09 0.00
MONTH TO DATE 2.51 2.24 0.27 0.30
SINCE SEP 1 3.00 5.43 -2.43 1.62
SINCE JAN 1 25.45 32.14 -6.69 28.48
SNOWFALL (IN)
YESTERDAY 0.0 3.0 1952 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 11 13 -2 0
MONTH TO DATE 82 190 -108 114
SINCE SEP 1 114 267 -153 129
SINCE JUL 1 119 273 -154 129
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 57 12 45 13
SINCE SEP 1 223 128 95 203
SINCE JAN 1 1215 1000 215 1189
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 11.5
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 11:00 PM
LOWEST 29 2:00 PM
AVERAGE 56
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 87 1953
MINIMUM TEMPERATURE (F) 44 26 1952
SUNRISE AND SUNSET
OCTOBER 21 2025.......SUNRISE 7:11 AM CDT SUNSET 6:00 PM CDT
OCTOBER 22 2025.......SUNRISE 7:13 AM CDT SUNSET 5:59 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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