Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 202134
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CDT WED AUG 20 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 20 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 80 2:22 PM 93 2023 82 -2 74
MINIMUM 64 4:13 AM 51 2002 62 2 53
AVERAGE 72 72 0 64
PRECIPITATION (IN)
TODAY 0.00 1.52 2022 0.11 -0.11 0.00
MONTH TO DATE 2.68 2.51 0.17 1.56
SINCE JUN 1 12.29 9.78 2.51 11.15
SINCE JAN 1 20.35 22.04 -1.69 23.79
DEGREE DAYS
HEATING
TODAY 0 0 0 1
MONTH TO DATE 0 0 0 3
SINCE JUN 1 18 37 -19 19
SINCE JUL 1 0 4 -4 6
COOLING
TODAY 7 7 0 0
MONTH TO DATE 219 154 65 135
SINCE JUN 1 851 601 250 639
SINCE JAN 1 884 657 227 693
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 7.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 58 3:00 PM
AVERAGE 78
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 94 2003
MINIMUM TEMPERATURE (F) 61 49 2004
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.
$$