Climatological Report (Monthly)
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CXUS53 KLOT 011510 CCA
CLMORD

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

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

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

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              71   12/02/1982
                        12/03/1970
 LOW              -25   12/24/1983
HIGHEST            54   12/26                         61  12/14
                                                          12/13
LOWEST            -13   12/19                         15  12/19
AVG. MAXIMUM     31.1              34.8    -3.7     44.5
AVG. MINIMUM     18.9              20.7    -1.8     33.5
MEAN             25.0              27.7    -2.7     39.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     14              11.4     2.6        4
DAYS MIN <= 32     28              26.0     2.0       15
DAYS MIN <= 0       3               1.5     1.5        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.56   1982
 MINIMUM         0.16   1896
TOTALS           1.77              2.25   -0.48     4.87
DAILY AVG.       0.06              0.07   -0.01     0.16
DAYS >= .01        10              11.0    -1.0       13
DAYS >= .10         7               5.0     2.0       10
DAYS >= .50         1               1.2    -0.2        3
DAYS >= 1.00        0               0.3    -0.3        1
GREATEST
 24 HR. TOTAL    0.50   12/04 TO 12/04


SNOWFALL (INCHES)
RECORDS
 TOTAL           33.3   1951

TOTALS           17.7               8.2     9.5      4.5
SINCE 7/1        17.7               9.9     7.8     15.7
SNOWDEPTH AVG.      2                 2       0        0
DAYS >= 1.0         5               2.5     2.5
GREATEST
 SNOW DEPTH         6   12/20
                        12/19
                        12/18
 24 HR TOTAL      6.4   12/04 TO 12/04

DEGREE_DAYS
HEATING TOTAL    1231              1155      76      800
 SINCE 7/1       2060              2411    -351     1773
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1157               843     314      806
.........................................................

WIND (MPH)
AVERAGE WIND SPEED              11.3
RESULTANT WIND SPEED/DIRECTION   8/252
HIGHEST WIND SPEED/DIRECTION    33/250    DATE  12/26
HIGHEST GUST SPEED/DIRECTION    44/260    DATE  12/26


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       1
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                1     SNOW                       4
LIGHT SNOW               13     SLEET                      1
FOG                      14     FOG W/VIS <= 1/4 MILE      4
HAZE                      9

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

&&
RECORDS ESTABLISHED DURING DECEMBER 2016
* SET RECORD DAILY SNOWFALL ON DECEMBER 4TH WITH 6.4 INCHES


$$



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