545
CXUS53 KLOT 020941
CLMDPA

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
441 AM CDT SUN AUG 02 2026

...................................

...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JULY 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            100   07/07/2012
                       07/06/2012
                       07/24/2005
 LOW              42   07/02/2001
HIGHEST           93   07/02                          94  07/23
                       07/14
LOWEST            51   07/23                          56  07/18
AVG. MAXIMUM    84.3               84.0     0.3     86.3
AVG. MINIMUM    64.7               63.3     1.4     66.8
MEAN            74.5               73.7     0.8     76.5
DAYS MAX >= 90     6                5.6     0.4       11
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.62   2023
 MINIMUM        1.17   2018
TOTALS          5.41               3.62    1.79     6.96
DAILY AVG.      0.17               0.12    0.05     0.22
DAYS >= .01        8               10.2    -2.2       13
DAYS >= .10        4                6.0    -2.0       11
DAYS >= .50        4                2.5     1.5        5
DAYS >= 1.00       3                0.9     2.1        3
GREATEST
 24 HR. TOTAL   2.62   07/02 TO 07/03               1.86

DEGREE DAYS
HEATING TOTAL      1                  4      -3        0
 SINCE 7/1         1                  0       1       MM
COOLING TOTAL    307                272      35      365
 SINCE 1/1       520                503      17       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.6
HIGHEST WIND SPEED/DIRECTION    41/030    DATE  07/27
HIGHEST GUST SPEED/DIRECTION    56/030    DATE  07/27

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       2
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      1
HAZE                      6

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

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