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

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CXUS53 KLSX 020715 CCA
CLMSTL

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

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

...THE ST. LOUIS MO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              76   12/03/1970
                        12/15/1948
 LOW              -16   12/22/1989
HIGHEST            70   12/04                         68
LOWEST              2   12/31                          3
                        12/27
AVG. MAXIMUM     43.6              42.5     1.1     42.9
AVG. MINIMUM     26.1              26.9    -0.8     26.6
MEAN             34.8              34.7     0.1     34.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      8               5.7     2.3        6
DAYS MIN <= 32     20              21.0    -1.0       23
DAYS MIN <= 0       0               0.5    -0.5        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.74   2015
 MINIMUM         0.03   1955
TOTALS           0.84              2.84   -2.00     1.13
DAILY AVG.       0.03              0.09   -0.06     0.04
DAYS >= .01         5               9.4    -4.4        8
DAYS >= .10         3               5.4    -2.4        4
DAYS >= .50         0               1.7    -1.7        0
DAYS >= 1.00        0               0.7    -0.7        0
GREATEST
 24 HR. TOTAL    0.36   12/23

SNOWFALL (INCHES)
RECORDS
 TOTAL           26.3   1973
 24 HR TOTAL     12.0   12/19/1973 TO 12/19/1973
TOTALS            3.5               4.4    -0.9      0.2
SINCE 7/1         3.5               5.1    -1.6      0.2
GREATEST
 24 HR TOTAL      2.1   12/23

DEGREE_DAYS
HEATING TOTAL     928               939     -11      931
 SINCE 7/1       1630              1765    -135     1422
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1959              1646     313     2162
..............................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    36/280    DATE  12/13
HIGHEST GUST SPEED/DIRECTION    45/270    DATE  12/13

SKY COVER
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         11


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

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


...DAILY...

NO RECORDS OF NOTE.


...MONTLY...

14TH DRIEST DECEMBER ON RECORD (0.84 INCHES OF PRECIPITATION).

TIED 8TH LEAST NUMBER OF OCCURENCES WITH MEASUREABLE PRECIPITATION (5
DAYS).

$$



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