Climatological Report (Monthly)
Issued by NWS
Issued by NWS
257
CXUS53 KLOT 011527
CLMDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1027 AM CDT SUN JUN 01 2025
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...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 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
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TEMPERATURE (F)
RECORD
HIGH 96 05/27/2012
LOW 26 05/09/2020
05/21/2002
HIGHEST 93 05/15 89 05/21
LOWEST 34 05/09 41 05/30
AVG. MAXIMUM 69.8 70.9 -1.1 75.4
AVG. MINIMUM 46.3 48.7 -2.4 51.2
MEAN 58.1 59.8 -1.7 63.3
DAYS MAX >= 90 1 0.7 0.3 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.9 -0.9 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.71 2019
MINIMUM 1.21 2023
TOTALS 1.59 4.34 -2.75 3.42
DAILY AVG. 0.05 0.14 -0.09 0.11
DAYS >= .01 8 13.6 -5.6 12
DAYS >= .10 4 8.6 -4.6 8
DAYS >= .50 2 3.2 -1.2 3
DAYS >= 1.00 0 1.1 -1.1 0
GREATEST
24 HR. TOTAL 0.61 05/20 TO 05/20 0.86
DEGREE DAYS
HEATING TOTAL 233 211 22 90
SINCE 7/1 5657 6330 -673 MM
COOLING TOTAL 27 50 -23 46
SINCE 1/1 33 56 -23 MM
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WIND (MPH)
AVERAGE WIND SPEED 9.1
HIGHEST WIND SPEED/DIRECTION 32/210 DATE 05/15
HIGHEST GUST SPEED/DIRECTION 52/190 DATE 05/16
AVERAGE RH (PERCENT) 65
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 3
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 13 FOG W/VIS <= 1/4 MILE 1
HAZE 4
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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