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

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CDUS43 KLSX 182233
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
432 PM CST MON DEC 18 2017


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

...THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 18 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         54    251 PM  69    1939  41     13       16
                                      1877
  MINIMUM         46    730 AM  -4    1983  26     20        4
                                      1884
  AVERAGE         50                        34     16       10

PRECIPITATION (IN)
  TODAY            T             2.78 1924   0.08  -0.08      T
  MONTH TO DATE    0.15                      1.70  -1.55     0.36
  SINCE DEC 1      0.15                      1.70  -1.55     0.36
  SINCE JAN 1     35.96                     39.82  -3.86    40.67

SNOWFALL (IN)
  TODAY            0.0           5.2  1929   0.1   -0.1       T
  MONTH TO DATE    T                         2.1   -2.1      0.2
  SINCE DEC 1      T                         2.1   -2.1      0.2
  SINCE JUL 1      T                         2.8   -2.8      0.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           15                        31    -16       55
  MONTH TO DATE  418                       517    -99      607
  SINCE DEC 1    418                       517    -99      607
  SINCE JUL 1   1120                      1343   -223     1098

 COOLING
  TODAY            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    20   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    SW (240)
  AVERAGE WIND SPEED    10.8


SKY COVER
  AVERAGE SKY COVER 0.9



RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           400 AM
 LOWEST     59           300 PM
 AVERAGE    73

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


THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   41        68      1976
                                             1889
                                             1877
 MINIMUM TEMPERATURE (F)   26        -7      1983
                                             1884


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   715 AM CST   SUNSET   442 PM CST
DECEMBER 19 2017......SUNRISE   715 AM CST   SUNSET   443 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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