Climatological Report (Monthly)
Issued by NWS
Issued by NWS
859
CXUS53 KLOT 011348
CLMDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
848 AM CDT SAT NOV 01 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 89 10/03/2025
LOW 21 10/28/1997
HIGHEST 89R 10/03 84 10/05
10/04
LOWEST 29 10/25 30 10/17
AVG. MAXIMUM 67.0 62.4 4.6 69.9
AVG. MINIMUM 46.8 42.0 4.8 43.7
MEAN 56.9 52.2 4.7 56.8
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 2 5.4 -3.4 2
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.29 2017
MINIMUM 0.63 2005
TOTALS 3.07 2.99 0.08 1.02
DAILY AVG. 0.10 0.10 0.00 0.03
DAYS >= .01 9 10.8 -1.8 6
DAYS >= .10 3 6.4 -3.4 3
DAYS >= .50 3 2.0 1.0 1
DAYS >= 1.00 1 0.6 0.4 0
GREATEST
24 HR. TOTAL 1.79 10/06 TO 10/07 0.81
DEGREE DAYS
HEATING TOTAL 291 407 -116 265
SINCE 7/1 349 518 -169 MM
COOLING TOTAL 49 11 38 19
SINCE 1/1 1084 823 261 MM
................................................................
WIND (MPH)
AVERAGE WIND SPEED 8.1
HIGHEST WIND SPEED/DIRECTION 30/310 DATE 10/19
HIGHEST GUST SPEED/DIRECTION 41/290 DATE 10/19
41/270 10/21
AVERAGE RH (PERCENT) 67
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 4
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 10 FOG W/VIS <= 1/4 MILE 1
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$