500
CDUS43 KLOT 200632
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT SAT SEP 20 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 19 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 90 1:41 PM 93 1955 75 15 90
MINIMUM 70 6:41 AM 37 1929 58 12 63
AVERAGE 80 66 14 77
PRECIPITATION (IN)
YESTERDAY 0.00 0.94 1968 0.09 -0.09 0.00
MONTH TO DATE 0.26 1.78 -1.52 T
SINCE SEP 1 0.26 1.78 -1.52 T
SINCE JAN 1 25.08 25.81 -0.73 29.47
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 0
MONTH TO DATE 21 19 2 10
SINCE SEP 1 21 19 2 10
SINCE JUL 1 23 23 0 10
COOLING
YESTERDAY 15 4 11 12
MONTH TO DATE 109 106 3 151
SINCE SEP 1 109 106 3 151
SINCE JAN 1 1250 1062 188 1274
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SE (150)
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 73 5:00 AM
LOWEST 30 2:00 PM
AVERAGE 52
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THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 95 2018
MINIMUM TEMPERATURE (F) 57 38 1937
1956
SUNRISE AND SUNSET
SEPTEMBER 20 2025.....SUNRISE 6:37 AM CDT SUNSET 6:51 PM CDT
SEPTEMBER 21 2025.....SUNRISE 6:38 AM CDT SUNSET 6:49 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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