497
CDUS43 KLOT 110641
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
141 AM CDT THU SEP 11 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 10 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 83 3:37 PM 96 2013 78 5 83
MINIMUM 64 6:27 AM 44 1943 61 3 58
AVERAGE 74 70 4 71
PRECIPITATION (IN)
YESTERDAY 0.00 1.61 2014 0.09 -0.09 0.00
MONTH TO DATE 0.06 1.02 -0.96 T
SINCE SEP 1 0.06 1.02 -0.96 T
SINCE JAN 1 24.88 25.05 -0.17 29.47
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 21 5 16 10
SINCE SEP 1 21 5 16 10
SINCE JUL 1 23 9 14 10
COOLING
YESTERDAY 9 6 3 6
MONTH TO DATE 21 66 -45 45
SINCE SEP 1 21 66 -45 45
SINCE JAN 1 1162 1022 140 1168
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 5.7
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 61 9:00 PM
LOWEST 29 1:00 PM
AVERAGE 45
......................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 95 1931
1952
MINIMUM TEMPERATURE (F) 61 44 1940
1943
SUNRISE AND SUNSET
SEPTEMBER 11 2025.....SUNRISE 6:27 AM CDT SUNSET 7:07 PM CDT
SEPTEMBER 12 2025.....SUNRISE 6:28 AM CDT SUNSET 7:05 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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