Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 172147
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
447 PM CDT SUN AUG 17 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 85 12:50 PM 87 2015 82 3 83
MINIMUM 71 3:07 AM 51 2013 62 9 67
AVERAGE 78 72 6 75
PRECIPITATION (IN)
TODAY 0.59 0.84 2000 0.13 0.46 0.08
MONTH TO DATE 1.18 2.16 -0.98 1.56
SINCE JUN 1 10.79 9.43 1.36 11.15
SINCE JAN 1 18.85 21.69 -2.84 23.79
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 2
SINCE JUN 1 18 37 -19 18
SINCE JUL 1 0 4 -4 5
COOLING
TODAY 13 7 6 10
MONTH TO DATE 189 133 56 124
SINCE JUN 1 821 580 241 628
SINCE JAN 1 854 636 218 682
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 7.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 2:00 AM
LOWEST 67 12:00 PM
AVERAGE 82
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 86 2006
2016
MINIMUM TEMPERATURE (F) 62 48 2012
SUNRISE AND SUNSET
AUGUST 17 2025........SUNRISE 6:03 AM CDT SUNSET 7:50 PM CDT
AUGUST 18 2025........SUNRISE 6:04 AM CDT SUNSET 7:48 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$