Climatological Report (Daily)
Issued by NWS
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139
CDUS43 KLOT 120635
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT SUN OCT 12 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR OCTOBER 11 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 65 12:17 PM 88 1928 66 -1 84
MINIMUM 55 7:04 AM 29 2009 48 7 54
AVERAGE 60 57 3 69
PRECIPITATION (IN)
YESTERDAY 0.00 1.72 2021 0.12 -0.12 0.00
MONTH TO DATE 1.41 1.23 0.18 0.08
SINCE SEP 1 1.97 4.00 -2.03 1.97
SINCE JAN 1 26.79 28.03 -1.24 31.44
DEGREE DAYS
HEATING
YESTERDAY 5 9 -4 0
MONTH TO DATE 31 77 -46 17
SINCE SEP 1 52 136 -84 27
SINCE JUL 1 54 140 -86 27
COOLING
YESTERDAY 0 1 -1 4
MONTH TO DATE 62 15 47 16
SINCE SEP 1 266 151 115 235
SINCE JAN 1 1407 1107 300 1358
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 9.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 12:00 AM
LOWEST 60 9:00 AM
AVERAGE 70
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 86 1930
2008
MINIMUM TEMPERATURE (F) 48 30 1987
SUNRISE AND SUNSET
OCTOBER 12 2025.......SUNRISE 7:00 AM CDT SUNSET 6:14 PM CDT
OCTOBER 13 2025.......SUNRISE 7:01 AM CDT SUNSET 6:12 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$