817
CDUS43 KLOT 040643
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
143 AM CDT SAT OCT 04 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 3 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 89 1:31 PM 91 1954 69 20 80
MINIMUM 64 6:22 AM 29 1974 50 14 54
1981
AVERAGE 77 59 18 67
PRECIPITATION (IN)
YESTERDAY 0.00 3.95 1954 0.11 -0.11 0.00
MONTH TO DATE 0.00 0.34 -0.34 0.00
SINCE SEP 1 0.49 3.53 -3.04 1.32
SINCE JAN 1 22.94 30.24 -7.30 28.18
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 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 0 7 -7 0
MONTH TO DATE 0 20 -20 7
SINCE SEP 1 32 97 -65 22
SINCE JUL 1 37 103 -66 22
COOLING
YESTERDAY 12 1 11 2
MONTH TO DATE 24 3 21 2
SINCE SEP 1 190 119 71 192
SINCE JAN 1 1182 991 191 1178
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WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.1
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 73 6:00 AM
LOWEST 33 2:00 PM
AVERAGE 53
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 90 1951
MINIMUM TEMPERATURE (F) 50 32 1980
1989
SUNRISE AND SUNSET
OCTOBER 4 2025.......SUNRISE 6:52 AM CDT SUNSET 6:28 PM CDT
OCTOBER 5 2025.......SUNRISE 6:53 AM CDT SUNSET 6:26 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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