Climatological Report (Seasonal)
Issued by NWS

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CXUS53 KLOT 011241
CLSORD


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

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2017 TO 8/31/2017...

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
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             105   07/24/1934
 LOW               35   06/04/1945
HIGHEST            95   06/12                         93
LOWEST             50   06/27                         51
AVG. MAXIMUM     82.6              81.9     0.7     83.5
AVG. MINIMUM     63.1              61.7     1.4     65.0
MEAN             72.9              71.8     1.1     74.3
DAYS MAX >= 90      9
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        23.48   1987
 MINIMUM         3.16   1894
TOTALS          13.63             12.05    1.58
DAYS >= .01        30
DAYS >= .10        17
DAYS >= .50        11
DAYS >= 1.00        4

DEGREE_DAYS
HEATING TOTAL       8                61     -53
 SINCE 7/1          5                13      -8
COOLING TOTAL     750               686      64
 SINCE 1/1        783               740      43
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.6
HIGHEST WIND SPEED/DIRECTION    35/320    DATE  07/19
HIGHEST GUST SPEED/DIRECTION    45/220    DATE  08/03


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             28    MIXED PRECIP               0
HEAVY RAIN               16     RAIN                      18
LIGHT RAIN               39     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       3
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      26     FOG W/VIS <= 1/4 MILE      1
HAZE                     26

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

&&

SEASONAL RECORDS FOR SUMMER 2017
* NONE

$$





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