Climatological Report (Monthly)
Issued by NWS

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CXUS53 KLOT 011621
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1114 AM CDT TUE SEP 1 2020

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2020

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            97   08/24        MM      MM       90  08/05
LOWEST             56   08/05        MM      MM       57  08/01
AVG. MAXIMUM     86.4              81.9     4.5     81.5
AVG. MINIMUM     67.2              62.9     4.3     64.3
MEAN             76.8              72.4     4.4     72.9
DAYS MAX >= 90     10               3.6     6.4        1
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           0.80              4.90   -4.10     3.63
DAILY AVG.       0.03              0.16   -0.13     0.12
DAYS >= .01         5               9.8    -4.8       10
DAYS >= .10         2               6.7    -4.7        7
DAYS >= .50         0               2.8    -2.8        3
DAYS >= 1.00        0               1.5    -1.5        1
GREATEST
 24 HR. TOTAL    0.41   08/10 TO 08/10           08/26 TO 08/26

DEGREE_DAYS
HEATING TOTAL       0                 9      -9        0
 SINCE 7/1          0                13     -13        0
COOLING TOTAL     372               238     134      251
 SINCE 1/1       1182               740     442      796
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.7
RESULTANT WIND SPEED/DIRECTION   1/258
HIGHEST WIND SPEED/DIRECTION    40/270    DATE  08/10
HIGHEST GUST SPEED/DIRECTION    62/270    DATE  08/10


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