Climatological Report (Monthly)
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CXUS53 KLOT 011135
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
628 AM CDT FRI SEP 1 2017

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017

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   08/20                         92  08/11
LOWEST             52   08/25                         56  08/22
AVG. MAXIMUM     80.7              81.9    -1.2     84.3
AVG. MINIMUM     62.2              62.9    -0.7     67.4
MEAN             71.5              72.4    -0.9     75.8
DAYS MAX >= 90      1               3.6    -2.6        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           2.51              4.90   -2.39     4.26
DAILY AVG.       0.08              0.16   -0.08     0.14
DAYS >= .01        10               9.8     0.2       13
DAYS >= .10         4               6.7    -2.7        8
DAYS >= .50         2               2.8    -0.8        3
DAYS >= 1.00        0               1.5    -1.5        0
GREATEST
 24 HR. TOTAL    0.92   08/01 TO 08/01

DEGREE_DAYS
HEATING TOTAL       5                 9      -4        0
 SINCE 7/1          5                13      -8        0
COOLING TOTAL     214               238     -24      343
 SINCE 1/1        783               740      43      965
..................................................

WIND (MPH)
AVERAGE WIND SPEED              7.8
RESULTANT WIND SPEED/DIRECTION   2/288
HIGHEST WIND SPEED/DIRECTION    33/260    DATE  08/01
HIGHEST GUST SPEED/DIRECTION    45/220    DATE  08/03


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              9     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       3
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      0
HAZE                     11

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

&&

DAILY RECORDS ESTABLISHED DURING AUGUST 2017
* NONE


$$





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