143
CDUS43 KLOT 250633
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT THU SEP 25 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 24 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 75 2:17 PM 92 2017 73 2 68
MINIMUM 64 11:59 PM 30 1928 56 8 63
AVERAGE 70 64 6 66
PRECIPITATION (IN)
YESTERDAY 0.00 1.85 1977 0.09 -0.09 0.95
MONTH TO DATE 0.56 2.25 -1.69 1.78
SINCE SEP 1 0.56 2.25 -1.69 1.78
SINCE JAN 1 25.38 26.28 -0.90 31.25
DEGREE DAYS
HEATING
YESTERDAY 0 3 -3 0
MONTH TO DATE 21 33 -12 10
SINCE SEP 1 21 33 -12 10
SINCE JUL 1 23 37 -14 10
COOLING
YESTERDAY 5 3 2 1
MONTH TO DATE 153 122 31 190
SINCE SEP 1 153 122 31 190
SINCE JAN 1 1294 1078 216 1313
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 12.1
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 11:00 PM
LOWEST 55 12:00 PM
AVERAGE 68
......................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 92 2017
MINIMUM TEMPERATURE (F) 55 30 1942
SUNRISE AND SUNSET
SEPTEMBER 25 2025.....SUNRISE 6:42 AM CDT SUNSET 6:42 PM CDT
SEPTEMBER 26 2025.....SUNRISE 6:43 AM CDT SUNSET 6:41 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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