Climatological Report (Daily)
Issued by NWS
Issued by NWS
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990
CDUS43 KLOT 210632
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT THU AUG 21 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 20 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 80 2:22 PM 93 2023 82 -2 74
MINIMUM 63 11:53 PM 51 2002 62 1 53
AVERAGE 72 72 0 64
PRECIPITATION (IN)
YESTERDAY 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
YESTERDAY 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
YESTERDAY 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 NE (60)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 8.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 58 3:00 PM
AVERAGE 78
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 94 2003
MINIMUM TEMPERATURE (F) 61 49 2004
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.
$$