Climatological Report (Monthly)
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CXUS53 KLOT 011429
CLMMDW


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
815 AM CST TUE JAN 1 2019

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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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              72   12/03/2012
 LOW              -20   12/24/1983
HIGHEST            54   12/28        MM      MM       65
                        12/27
LOWEST             17   12/10        MM      MM       -3
                        12/07
AVG. MAXIMUM     40.7              35.3     5.4     35.2
AVG. MINIMUM     27.8              22.7     5.1     21.7
MEAN             34.2              29.0     5.2     28.5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.21   1982
 MINIMUM         0.17   2017
TOTALS           2.51              2.57   -0.06     0.17

DEGREE_DAYS
HEATING TOTAL     945              1116    -171     1127
 SINCE 7/1       2268              2251      17     2110
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1408              1045     363     1151
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.3
HIGHEST WIND SPEED/DIRECTION    29/080    DATE  12/01
HIGHEST GUST SPEED/DIRECTION    39/210    DATE  12/28

AVERAGE RH (PERCENT)     74


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

$$


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