Climatological Report (Monthly)
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CXUS53 KLOT 011128
CLMMDW


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
623 AM CDT MON OCT 1 2018

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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1928 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             102   09/15/1939
 LOW               29   09/28/1942
HIGHEST            95   09/20        MM      MM       95
LOWEST             42   09/29        MM      MM       50
AVG. MAXIMUM     78.3              75.3     3.0     79.8
AVG. MINIMUM     61.5              57.5     4.0     61.7
MEAN             69.9              66.4     3.5     70.7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        14.17   1961
 MINIMUM         0.01   1979
TOTALS           2.32              3.31   -0.99     0.56

DEGREE_DAYS
HEATING TOTAL      47                77     -30       22
 SINCE 7/1         47                82     -35       27
COOLING TOTAL     205               119      86      204
 SINCE 1/1       1370              1029     341     1110
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.0
HIGHEST WIND SPEED/DIRECTION    35/300    DATE  09/25
HIGHEST GUST SPEED/DIRECTION    48/300    DATE  09/25

AVERAGE RH (PERCENT)     67


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

$$



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