Climatological Report (Daily)
Issued by NWS
Issued by NWS
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853
CDUS43 KLOT 300644
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
144 AM CDT WED SEP 30 2026
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 29 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2026
WEATHER ITEM OBSERVED RECORD YEAR NORMAL DEPARTURE LAST
VALUE VALUE VALUE FROM YEAR
NORMAL
............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 78 90 2025 70 8 90
MINIMUM 48 35 2018 48 0 53
AVERAGE 63 59 4 72
PRECIPITATION (IN)
YESTERDAY 0.00 0.69 2019 0.09 -0.09 0.00
MONTH TO DATE 3.71 2.90 0.81 0.64
SINCE SEP 1 3.71 2.90 0.81 0.64
SINCE JAN 1 32.85 26.27 6.58 21.17
DEGREE DAYS
HEATING
YESTERDAY 2 7 -5 0
MONTH TO DATE 51 93 -42 47
SINCE SEP 1 51 93 -42 47
SINCE JUL 1 52 104 -52 58
COOLING
YESTERDAY 0 1 -1 7
MONTH TO DATE 149 87 62 121
SINCE SEP 1 149 87 62 121
SINCE JAN 1 830 811 19 1029
............................................................
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 39 2:00 PM
AVERAGE 70
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 86 2019
MINIMUM TEMPERATURE (F) 48 35 2004
SUNRISE AND SUNSET
SEPTEMBER 30 2026.....SUNRISE 6:49 AM CDT SUNSET 6:36 PM CDT
OCTOBER 1 2026.......SUNRISE 6:50 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.
$$