Climatological Report (Daily)
Issued by NWS
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166
CDUS43 KLOT 030643
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
143 AM CDT WED SEP 03 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 2 2025...
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)
YESTERDAY
MAXIMUM 80 11:43 AM 101 1953 80 0 75
MINIMUM 60 5:32 AM 44 1946 64 -4 61
AVERAGE 70 72 -2 68
PRECIPITATION (IN)
YESTERDAY 0.00 1.37 1934 0.11 -0.11 0.00
MONTH TO DATE 0.00 0.23 -0.23 0.00
SINCE SEP 1 0.00 0.23 -0.23 0.00
SINCE JAN 1 24.82 24.26 0.56 29.47
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 2 4 -2 0
COOLING
YESTERDAY 5 7 -2 3
MONTH TO DATE 10 15 -5 9
SINCE SEP 1 10 15 -5 9
SINCE JAN 1 1151 971 180 1132
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 3.9
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 5:00 AM
LOWEST 38 12:00 PM
AVERAGE 61
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 97 1953
MINIMUM TEMPERATURE (F) 63 47 1974
SUNRISE AND SUNSET
SEPTEMBER 3 2025.....SUNRISE 6:19 AM CDT SUNSET 7:20 PM CDT
SEPTEMBER 4 2025.....SUNRISE 6:20 AM CDT SUNSET 7:19 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$