394
CDUS43 KLOT 182133
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT THU SEP 18 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 18 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 88 12:57 PM 94 1955 76 12 89
MINIMUM 62 6:05 AM 39 1929 58 4 64
AVERAGE 75 67 8 77
PRECIPITATION (IN)
TODAY 0.00 3.15 2015 0.09 -0.09 0.00
MONTH TO DATE 0.26 1.69 -1.43 T
SINCE SEP 1 0.26 1.69 -1.43 T
SINCE JAN 1 25.08 25.72 -0.64 29.47
DEGREE DAYS
HEATING
TODAY 0 2 -2 0
MONTH TO DATE 21 17 4 10
SINCE SEP 1 21 17 4 10
SINCE JUL 1 23 21 2 10
COOLING
TODAY 10 4 6 12
MONTH TO DATE 94 102 -8 139
SINCE SEP 1 94 102 -8 139
SINCE JAN 1 1235 1058 177 1262
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 3.2
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 2:00 AM
LOWEST 31 1:00 PM
AVERAGE 59
......................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 93 1955
MINIMUM TEMPERATURE (F) 58 37 1929
SUNRISE AND SUNSET
SEPTEMBER 18 2025.....SUNRISE 6:35 AM CDT SUNSET 6:55 PM CDT
SEPTEMBER 19 2025.....SUNRISE 6:36 AM CDT SUNSET 6:53 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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