Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 040638
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
138 AM CDT THU SEP 04 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 3 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 73 1:37 PM 97 1953 80 -7 78
MINIMUM 59 11:59 PM 47 1974 63 -4 60
AVERAGE 66 72 -6 69
PRECIPITATION (IN)
YESTERDAY 0.06 1.92 1961 0.10 -0.04 0.00
MONTH TO DATE 0.06 0.33 -0.27 0.00
SINCE SEP 1 0.06 0.33 -0.27 0.00
SINCE JAN 1 24.88 24.36 0.52 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 1 7 -6 4
MONTH TO DATE 11 22 -11 13
SINCE SEP 1 11 22 -11 13
SINCE JAN 1 1152 978 174 1136
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 11.1
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 5:00 PM
LOWEST 50 9:00 PM
AVERAGE 67
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 95 1954
1960
MINIMUM TEMPERATURE (F) 63 43 1938
SUNRISE AND SUNSET
SEPTEMBER 4 2025.....SUNRISE 6:20 AM CDT SUNSET 7:19 PM CDT
SEPTEMBER 5 2025.....SUNRISE 6:21 AM CDT SUNSET 7:17 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$