000
CXUS53 KLOT 011524
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1024 AM CDT FRI SEP 01 2023

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023

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          100   08/24                          95  08/06
LOWEST            54   08/31                          58  08/12
AVG. MAXIMUM    83.0               82.5     0.5     83.0
AVG. MINIMUM    65.5               65.1     0.4     65.7
MEAN            74.3               73.8     0.5     74.4
DAYS MAX >= 90     5                3.7     1.3        3
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          1.33               4.25   -2.92     2.05
DAILY AVG.      0.04               0.14   -0.10     0.07
DAYS >= .01        5                9.4    -4.4        7
DAYS >= .10        4                6.5    -2.5        6
DAYS >= .50        1                2.7    -1.7        1
DAYS >= 1.00       0                1.2    -1.2        0
GREATEST
 24 HR. TOTAL   1.00   08/14 TO 08/15               0.61

DEGREE DAYS
HEATING TOTAL      2                  4      -2        0
 SINCE 7/1         2                  2       0       MM
COOLING TOTAL    299                277      22      299
 SINCE 1/1       934                872      62       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.8
HIGHEST WIND SPEED/DIRECTION    30/350    DATE  08/11
HIGHEST GUST SPEED/DIRECTION    39/350    DATE  08/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.51
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             19
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       2
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

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

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