Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 212141
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
441 PM CDT MON JUL 21 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 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 84 2:58 PM 97 2011 84 0 82
MINIMUM 61 4:30 AM 52 2007 64 -3 63
AVERAGE 73 74 -1 73
PRECIPITATION (IN)
TODAY 0.00 1.83 2001 0.12 -0.12 0.00
MONTH TO DATE 4.64 2.40 2.24 4.11
SINCE JUN 1 7.29 6.05 1.24 9.14
SINCE JAN 1 15.35 18.31 -2.96 21.78
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 3
SINCE JUN 1 18 33 -15 16
SINCE JUL 1 0 0 0 3
COOLING
TODAY 8 9 -1 8
MONTH TO DATE 227 185 42 177
SINCE JUN 1 494 360 134 419
SINCE JAN 1 527 416 111 473
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 6.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 5:00 AM
LOWEST 48 3:00 PM
AVERAGE 71
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 94 2001
MINIMUM TEMPERATURE (F) 64 53 2000
2007
SUNRISE AND SUNSET
JULY 21 2025..........SUNRISE 5:36 AM CDT SUNSET 8:22 PM CDT
JULY 22 2025..........SUNRISE 5:37 AM CDT SUNSET 8:21 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$