Climatological Report (Monthly)
Issued by NWS

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516
CXUS53 KLOT 011313
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
800 AM CDT SUN SEP 1 2019

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2019

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            90   08/05        MM      MM       97  08/04
LOWEST             57   08/01        MM      MM       58  08/22
AVG. MAXIMUM     81.5              81.9    -0.4     84.8
AVG. MINIMUM     64.3              62.9     1.4     67.7
MEAN             72.9              72.4     0.5     76.3
DAYS MAX >= 90      1               3.6    -2.6        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           3.63              4.90   -1.27     6.61
DAILY AVG.       0.12              0.16   -0.04     0.21
DAYS >= .01        10               9.8     0.2       12
DAYS >= .10         7               6.7     0.3        9
DAYS >= .50         3               2.8     0.2        4
DAYS >= 1.00        1               1.5    -0.5        2
GREATEST
 24 HR. TOTAL    1.40   08/26 TO 08/26           08/07 TO 08/07

DEGREE_DAYS
HEATING TOTAL       0                 4      -4        0
 SINCE 7/1          0                13     -13        0
COOLING TOTAL     251               238      13      356
 SINCE 1/1        796               740      56     1077
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.5
RESULTANT WIND SPEED/DIRECTION   1/316
HIGHEST WIND SPEED/DIRECTION    25/230    DATE  08/29
HIGHEST GUST SPEED/DIRECTION    40/250    DATE  08/29


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              7     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       4
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

$$




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