Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 302143
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
443 PM CDT WED SEP 30 2026
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 30 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 70 1:15 AM 92 1971 71 -1 83
MINIMUM 61 10:41 AM 34 1984 53 8 66
AVERAGE 66 62 4 75
PRECIPITATION (IN)
TODAY 0.83R 0.76 1977 0.09 0.74 0.00
MONTH TO DATE 5.32 2.77 2.55 0.56
SINCE SEP 1 5.32 2.77 2.55 0.56
SINCE JAN 1 37.46 26.80 10.66 25.38
DEGREE DAYS
HEATING
TODAY 0 5 -5 0
MONTH TO DATE 27 59 -32 21
SINCE SEP 1 27 59 -32 21
SINCE JUL 1 27 63 -36 23
COOLING
TODAY 1 2 -1 10
MONTH TO DATE 204 136 68 204
SINCE SEP 1 204 136 68 204
SINCE JAN 1 1175 1092 83 1345
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 9.1
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 9:00 AM
LOWEST 49 12:00 AM
AVERAGE 73
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 92 1971
MINIMUM TEMPERATURE (F) 53 32 1974
SUNRISE AND SUNSET
SEPTEMBER 30 2026.....SUNRISE 6:47 AM CDT SUNSET 6:34 PM CDT
OCTOBER 1 2026.......SUNRISE 6:48 AM CDT SUNSET 6:33 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$