485
CDUS43 KLOT 150633
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT MON SEP 15 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 14 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 3:41 PM 101 1939 77 6 87
MINIMUM 68 6:33 AM 42 1937 60 8 69
1949
AVERAGE 76 68 8 78
PRECIPITATION (IN)
YESTERDAY 0.00 2.19 1993 0.09 -0.09 0.00
MONTH TO DATE 0.26 1.35 -1.09 T
SINCE SEP 1 0.26 1.35 -1.09 T
SINCE JAN 1 25.08 25.38 -0.30 29.47
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 21 9 12 10
SINCE SEP 1 21 9 12 10
SINCE JUL 1 23 13 10 10
COOLING
YESTERDAY 11 5 6 13
MONTH TO DATE 56 86 -30 90
SINCE SEP 1 56 86 -30 90
SINCE JAN 1 1197 1042 155 1213
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 7.9
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 3:00 AM
LOWEST 45 5:00 PM
AVERAGE 66
......................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 102 1939
MINIMUM TEMPERATURE (F) 59 41 1949
SUNRISE AND SUNSET
SEPTEMBER 15 2025.....SUNRISE 6:31 AM CDT SUNSET 7:00 PM CDT
SEPTEMBER 16 2025.....SUNRISE 6:33 AM CDT SUNSET 6:58 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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