Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 042133
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT SAT OCT 04 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR OCTOBER 4 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 89 2:42 PM 90 1951 69 20 72
MINIMUM 67 6:07 AM 34 1989 51 16 61
AVERAGE 78 60 18 67
PRECIPITATION (IN)
TODAY 0.00 1.89 1991 0.11 -0.11 0.08
MONTH TO DATE 0.00 0.45 -0.45 0.08
SINCE SEP 1 0.56 3.22 -2.66 1.97
SINCE JAN 1 25.38 27.25 -1.87 31.44
DEGREE DAYS
HEATING
TODAY 0 6 -6 0
MONTH TO DATE 0 23 -23 5
SINCE SEP 1 21 82 -61 15
SINCE JUL 1 23 86 -63 15
COOLING
TODAY 13 2 11 2
MONTH TO DATE 39 8 31 4
SINCE SEP 1 243 144 99 223
SINCE JAN 1 1384 1100 284 1346
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 8.9
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 73 4:00 AM
LOWEST 31 3:00 PM
AVERAGE 52
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 89 1997
MINIMUM TEMPERATURE (F) 51 31 1980
SUNRISE AND SUNSET
OCTOBER 4 2025.......SUNRISE 6:51 AM CDT SUNSET 6:27 PM CDT
OCTOBER 5 2025.......SUNRISE 6:52 AM CDT SUNSET 6:25 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$