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CXUS53 KLOT 011753
CLSORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1253 PM CDT MON SEP 01 2025

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2025 TO 8/31/2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            105   07/24/1934
 LOW              35   06/04/1945
HIGHEST           95   07/03                          99  08/27
                       08/09
                       08/16
LOWEST            46   06/01                          50  06/11
AVG. MAXIMUM    83.9               82.5     1.4     83.7
AVG. MINIMUM    66.1               64.1     2.0     65.5
MEAN            75.0               73.3     1.7     74.6
DAYS MAX >= 90    26               14.0    12.0       19
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       23.48   1987
 MINIMUM        3.16   1894
TOTALS         12.95              12.06    0.89    11.59
DAILY AVG.      0.14               0.13    0.01     0.12
DAYS >= .01       33               30.2     2.8       33
DAYS >= .10       19               19.0     0.0       22
DAYS >= .50        9                7.9     1.1        8
DAYS >= 1.00       4                3.3     0.7        3
GREATEST
 24 HR. TOTAL   2.28   08/16 TO 08/17               3.14

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
TOTALS           0.0                0.0     0.0        T
SINCE 7/1        0.0                0.0     0.0      0.0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL     0.0                                 0.0

DEGREE DAYS
HEATING TOTAL     18                 37     -19        6
 SINCE 7/1         5                  2       3        0
COOLING TOTAL    958                802     156      906
 SINCE 1/1       992                872     120      986
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.2
HIGHEST WIND SPEED/DIRECTION    41/230    DATE  07/16
HIGHEST GUST SPEED/DIRECTION    67/230    DATE  07/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.56
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             56
NUMBER OF DAYS CLOUDY         20

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             26     MIXED PRECIP               0
HEAVY RAIN               13     RAIN                      14
LIGHT RAIN               37     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      29     FOG W/VIS <= 1/4 MILE      1
HAZE                     26

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

$$