Climatological Report (Monthly)
Issued by NWS Chicago, IL

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CXUS53 KLOT 011245
CLMRFD


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

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1905 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              69   12/03/2012
 LOW              -24   12/24/1983
HIGHEST            48   12/26                         62  12/13
LOWEST            -13   12/19                         13  12/19
AVG. MAXIMUM     30.1              33.2    -3.1     43.4
AVG. MINIMUM     17.5              17.7    -0.2     32.1
MEAN             23.8              25.4    -1.6     37.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     15              12.6     2.4        3
DAYS MIN <= 32     29              27.4     1.6       16
DAYS MIN <= 0       5               2.9     2.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.04   1971
 MINIMUM         0.17   1907
TOTALS           1.88              1.98   -0.10     4.65
DAILY AVG.       0.06              0.06    0.00     0.15
DAYS >= .01        11              10.2     0.8       13
DAYS >= .10         7               5.0     2.0        7
DAYS >= .50         0               1.1    -1.1        4
DAYS >= 1.00        0               0.2    -0.2        2
GREATEST
 24 HR. TOTAL    0.48   12/04 TO 12/04



SNOWFALL (INCHES)
RECORDS
 TOTAL           30.1   2000
TOTALS           16.1              11.3     4.8      5.2
SINCE 7/1        16.1              13.1     3.0     14.0
SNOWDEPTH AVG.      4                 4       0        0
DAYS >= 1.0         5               3.1     1.9
GREATEST
 SNOW DEPTH         9   12/20
                        12/19
                        12/18
 24 HR TOTAL      5.3   12/04

DEGREE_DAYS
HEATING TOTAL    1270              1226      44      840
 SINCE 7/1       2139              2561    -422     1871
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1103               820     283      825
.........................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    24/290    DATE  12/29
HIGHEST GUST SPEED/DIRECTION    32/280    DATE  12/14


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          3     HAIL                       0
HEAVY SNOW                1     SNOW                       4
LIGHT SNOW               16     SLEET                      2
FOG                      16     FOG W/VIS <= 1/4 MILE      4
HAZE                      5

-  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 LOWEST MAXIMUM TEMPERATURE ON DECEMBER 15TH OF
  8 DEGREES.  PREVIOUS RECORD WAS 9 DEGREES SET IN 1932.

$$






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