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

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CDUS43 KLSX 120727
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
126 AM CST TUE DEC 12 2017


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

...THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 11 2017...

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


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         58   1158 AM  70    1979  43     15       49
                                      1949
  MINIMUM         29    323 AM   2    1962  28      1       37
                                      1917
  AVERAGE         44                        36      8       43

PRECIPITATION (IN)
  YESTERDAY        0.00          1.20 1949   0.09  -0.09     0.01
  MONTH TO DATE    0.15                      1.10  -0.95     0.28
  SINCE DEC 1      0.15                      1.10  -0.95     0.28
  SINCE JAN 1     35.96                     39.22  -3.26    40.59

SNOWFALL (IN)
  YESTERDAY        0.0           4.3  1963   0.1   -0.1      0.0
  MONTH TO DATE    T                         1.1   -1.1      0.0
  SINCE DEC 1      T                         1.1   -1.1      0.0
  SINCE JUL 1      T                         1.8   -1.8      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       21                        29     -8       22
  MONTH TO DATE  259                       303    -44      324
  SINCE DEC 1    259                       303    -44      324
  SINCE JUL 1    961                      1129   -168      815

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1959                      1646    313     2162
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    44   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    14.3


SKY COVER
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85           300 AM
 LOWEST     25          1200 PM
 AVERAGE    55

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


THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        72      2015
 MINIMUM TEMPERATURE (F)   28        -5      1962


SUNRISE AND SUNSET
DECEMBER 12 2017......SUNRISE   711 AM CST   SUNSET   440 PM CST
DECEMBER 13 2017......SUNRISE   711 AM CST   SUNSET   440 PM CST


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




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