Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 300633
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT TUE SEP 30 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 29 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 1:40 PM 99 1953 71 19 74
MINIMUM 65 5:05 AM 33 1942 53 12 69
AVERAGE 78 62 16 72
PRECIPITATION (IN)
YESTERDAY 0.00 1.13 1929 0.08 -0.08 T
MONTH TO DATE 0.56 2.68 -2.12 1.89
SINCE SEP 1 0.56 2.68 -2.12 1.89
SINCE JAN 1 25.38 26.71 -1.33 31.36
DEGREE DAYS
HEATING
YESTERDAY 0 5 -5 0
MONTH TO DATE 21 54 -33 10
SINCE SEP 1 21 54 -33 10
SINCE JUL 1 23 58 -35 10
COOLING
YESTERDAY 13 2 11 7
MONTH TO DATE 194 133 61 213
SINCE SEP 1 194 133 61 213
SINCE JAN 1 1335 1089 246 1336
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 4.1
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 5:00 AM
LOWEST 29 1:00 PM
AVERAGE 58
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 92 1971
MINIMUM TEMPERATURE (F) 53 34 1984
SUNRISE AND SUNSET
SEPTEMBER 30 2025.....SUNRISE 6:47 AM CDT SUNSET 6:34 PM CDT
OCTOBER 1 2025.......SUNRISE 6:48 AM CDT SUNSET 6:32 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$