814
CDUS43 KLOT 290639
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
139 AM CDT MON SEP 29 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 28 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 81 1:17 PM 92 1953 72 9 73
MINIMUM 63 5:17 AM 29 1942 54 9 66
AVERAGE 72 63 9 70
PRECIPITATION (IN)
YESTERDAY 0.00 3.65 1972 0.08 -0.08 0.11
MONTH TO DATE 0.56 2.60 -2.04 1.89
SINCE SEP 1 0.56 2.60 -2.04 1.89
SINCE JAN 1 25.38 26.63 -1.25 31.36
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 0
MONTH TO DATE 21 49 -28 10
SINCE SEP 1 21 49 -28 10
SINCE JUL 1 23 53 -30 10
COOLING
YESTERDAY 7 2 5 5
MONTH TO DATE 181 131 50 206
SINCE SEP 1 181 131 50 206
SINCE JAN 1 1322 1087 235 1329
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 6.6
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 76 6:00 AM
LOWEST 33 5:00 PM
AVERAGE 55
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THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 99 1953
MINIMUM TEMPERATURE (F) 53 33 1942
SUNRISE AND SUNSET
SEPTEMBER 29 2025.....SUNRISE 6:46 AM CDT SUNSET 6:36 PM CDT
SEPTEMBER 30 2025.....SUNRISE 6:47 AM CDT SUNSET 6:34 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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