Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 212133
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT THU AUG 21 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 21 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 2:30 PM 94 2003 82 -2 76
MINIMUM 62 5:26 AM 49 2004 61 1 51
AVERAGE 71 72 -1 64
PRECIPITATION (IN)
TODAY 0.00 1.38 2014 0.12 -0.12 0.00
MONTH TO DATE 2.68 2.63 0.05 1.56
SINCE JUN 1 12.29 9.90 2.39 11.15
SINCE JAN 1 20.35 22.16 -1.81 23.79
DEGREE DAYS
HEATING
TODAY 0 0 0 1
MONTH TO DATE 0 0 0 4
SINCE JUN 1 18 37 -19 20
SINCE JUL 1 0 4 -4 7
COOLING
TODAY 6 7 -1 0
MONTH TO DATE 225 161 64 135
SINCE JUN 1 857 608 249 639
SINCE JAN 1 890 664 226 693
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 8.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 12:00 AM
LOWEST 56 12:00 PM
AVERAGE 75
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 90 2007
MINIMUM TEMPERATURE (F) 61 48 2004
2024
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 6:08 AM CDT SUNSET 7:44 PM CDT
AUGUST 22 2025........SUNRISE 6:09 AM CDT SUNSET 7:42 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$