Climatological Report (Daily)
Issued by NWS
Issued by NWS
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945
CDUS43 KLOT 200643
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
143 AM CDT WED AUG 20 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 19 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 79 2:59 PM 89 2021 82 -3 78
MINIMUM 67 11:53 PM 51 1997 62 5 59
AVERAGE 73 72 1 69
PRECIPITATION (IN)
YESTERDAY 0.08 0.35 2009 0.12 -0.04 0.00
MONTH TO DATE 2.68 2.40 0.28 1.56
SINCE JUN 1 12.29 9.67 2.62 11.15
SINCE JAN 1 20.35 21.93 -1.58 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 8 7 1 4
MONTH TO DATE 212 147 65 135
SINCE JUN 1 844 594 250 639
SINCE JAN 1 877 650 227 693
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 6.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 4:00 AM
LOWEST 69 5:00 PM
AVERAGE 82
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 93 2023
MINIMUM TEMPERATURE (F) 62 51 2002
SUNRISE AND SUNSET
AUGUST 20 2025........SUNRISE 6:07 AM CDT SUNSET 7:45 PM CDT
AUGUST 21 2025........SUNRISE 6:08 AM CDT SUNSET 7:44 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$