548
CDUS43 KLOT 310657
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
157 AM CDT FRI OCT 31 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 30 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 57 MM 85 1950 56 1 80
MINIMUM 41 6:39 AM 21 1988 40 1 68
AVERAGE 49 48 1 74
PRECIPITATION (IN)
YESTERDAY 0.00 0.83 1919 0.10 -0.10 0.00
MONTH TO DATE 2.53 3.33 -0.80 1.15
SINCE SEP 1 3.02 6.52 -3.50 2.47
SINCE JAN 1 25.47 33.23 -7.76 29.33
SNOWFALL (IN)
YESTERDAY 0.0 1.2 2019 0.0 0.0 0.0
MONTH TO DATE 0.0 0.2 -0.2 0.0
SINCE SEP 1 0.0 0.2 -0.2 0.0
SINCE JUL 1 0.0 0.2 -0.2 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 16 17 -1 0
MONTH TO DATE 241 340 -99 186
SINCE SEP 1 273 417 -144 201
SINCE JUL 1 278 423 -145 201
COOLING
YESTERDAY 0 0 0 9
MONTH TO DATE 57 12 45 35
SINCE SEP 1 223 128 95 225
SINCE JAN 1 1215 1000 215 1211
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WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 8.3
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 5:00 AM
LOWEST 45 2:00 PM
AVERAGE 67
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 84 1950
MINIMUM TEMPERATURE (F) 40 23 1873
SUNRISE AND SUNSET
OCTOBER 31 2025.......SUNRISE 7:23 AM CDT SUNSET 5:46 PM CDT
NOVEMBER 1 2025......SUNRISE 7:25 AM CDT SUNSET 5:45 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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