Climatological Report (Monthly)
Issued by NWS St Louis, MO

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CXUS53 KLSX 020718 CCA
CLMCOU

CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1151 AM CST MON JAN 1 2018

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

...THE COLUMBIA MO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1890 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              76   12/08/1991
 LOW              -23   12/20/1901
HIGHEST            70   12/04                         68
LOWEST              0   12/31                         -2
                        12/27
AVG. MAXIMUM     43.1              41.1     2.0     40.7
AVG. MINIMUM     24.2              23.7     0.5     23.2
MEAN             33.6              32.4     1.2     31.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      9               6.9     2.1        6
DAYS MIN <= 32     23              24.2    -1.2       27
DAYS MIN <= 0       0               1.1    -1.1        2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.82   1895
 MINIMUM         0.19   1955
TOTALS           0.23              2.44   -2.21     1.01
DAILY AVG.       0.01              0.08   -0.07     0.03
DAYS >= .01         4               8.4    -4.4        8
DAYS >= .10         0               4.5    -4.5        5
DAYS >= .50         0               1.6    -1.6        0
DAYS >= 1.00        0               0.7    -0.7        0
GREATEST
 24 HR. TOTAL    0.09   12/24

SNOWFALL (INCHES)
RECORDS
 TOTAL           17.8   1973
 24 HR TOTAL     13.0   12/01/2006 TO 12/01/2006
TOTALS            1.2               4.4    -3.2      0.5
SINCE 7/1         1.2               5.3    -4.1      0.5
GREATEST
 24 HR TOTAL      1.1   12/24

DEGREE_DAYS
HEATING TOTAL     964              1010     -46     1017
 SINCE 7/1       1744              1995    -251     1600
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1401              1249     152     1632
..............................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    35/320    DATE  12/11
HIGHEST GUST SPEED/DIRECTION    43/290    DATE  12/11

SKY COVER
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          6


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                5     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                      4

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


...DAILY...

1 RECORD HIGH TEMPERATURE TIED( 70 DEGREES ON 12/04. ALSO SET IN
1933).


...MONTHLY...

TIED 2ND DRIEST DECEMBER ON RECORD (0.23 INCHES OF PRECIPITATION).

TIED 6TH LEAST NUMBER OF OCCURENCES WITH MEASUREABLE PRECIPITATION(
4 DAYS)

LEAST NUMBER OF OCCURENCES WITH ATLEAST A TENTH OF AN INCH OF
PRECIPITATION (0 DAYS).


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