Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 180637
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
137 AM CDT MON AUG 18 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2025...
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)
YESTERDAY
MAXIMUM 85 12:50 PM 87 2015 82 3 83
MINIMUM 71 11:45 PM 51 2013 62 9 67
AVERAGE 78 72 6 75
PRECIPITATION (IN)
YESTERDAY 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
YESTERDAY 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
YESTERDAY 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 7.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
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 TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 86 2006
2016
MINIMUM TEMPERATURE (F) 62 48 2012
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:04 AM CDT SUNSET 7:48 PM CDT
AUGUST 19 2025........SUNRISE 6:06 AM CDT SUNSET 7:47 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$