Climatological Report (Monthly)
Issued by NWS

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CXUS53 KLOT 011245
CLMMDW


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
628 AM CST SUN JAN 1 2017

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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1928 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              72   12/03/2012
 LOW              -20   12/24/1983
HIGHEST            55   12/26        MM      MM       64
LOWEST             -6   12/19        MM      MM       17
AVG. MAXIMUM     32.8              35.3    -2.5     46.4
AVG. MINIMUM     21.5              22.7    -1.2     35.9
MEAN             27.2              29.0    -1.8     41.1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.21   1982
 MINIMUM         0.50   1989
TOTALS           1.25              2.57   -1.32     5.40

DEGREE_DAYS
HEATING TOTAL    1168              1116      52      731
 SINCE 7/1       1880              2251    -371     1541
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1465              1045     420     1152
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.8
HIGHEST WIND SPEED/DIRECTION    33/240    DATE  12/26
HIGHEST GUST SPEED/DIRECTION    41/240    DATE  12/26

AVERAGE RH (PERCENT)     69


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

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