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CXUS53 KLOT 010925
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
425 AM CDT TUE SEP 01 2026

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            102   08/05/1918
 LOW              42   08/28/1986
HIGHEST           87   08/07                          95  08/09
                       08/10
                       08/31
                                                          08/16
LOWEST            58   08/24                          54  08/26
                                                          08/31
AVG. MAXIMUM    81.6               82.5    -0.9     81.6
AVG. MINIMUM    66.8               65.1     1.7     65.0
MEAN            74.2               73.8     0.4     73.3
DAYS MAX >= 90     0                4.0    -4.0        5
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       17.10   1987
 MINIMUM        0.18   1893
TOTALS          5.02               4.25    0.77     5.03
DAILY AVG.      0.16               0.14    0.02     0.16
DAYS >= .01       10                9.4     0.6        8
DAYS >= .10        8                6.5     1.5        7
DAYS >= .50        3                2.7     0.3        3
DAYS >= 1.00       2                1.2     0.8        2
GREATEST
 24 HR. TOTAL   1.89   07/31 TO 08/01               2.28

DEGREE DAYS
HEATING TOTAL      0                  4      -4        5
 SINCE 7/1         0                  2      -2       MM
COOLING TOTAL    293                277      16      269
 SINCE 1/1       926                872      54       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    30/200    DATE  08/09
HIGHEST GUST SPEED/DIRECTION    44/190    DATE  08/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.62
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       6
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                      5

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

$$