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

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CDUS43 KLSX 180913
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
312 AM CST MON DEC 18 2017


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

...THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 17 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         55    257 PM  72    1908  42     13       40
  MINIMUM         42    226 AM  -3    1875  26     16       16
  AVERAGE         49                        34     15       28

PRECIPITATION (IN)
  YESTERDAY        T             1.02 1959   0.09  -0.09     0.06
                                      1897
  MONTH TO DATE    0.15                      1.62  -1.47     0.36
  SINCE DEC 1      0.15                      1.62  -1.47     0.36
  SINCE JAN 1     35.96                     39.74  -3.78    40.67

SNOWFALL (IN)
  YESTERDAY        0.0           2.0  1897   0.2   -0.2      0.2
  MONTH TO DATE    T                         2.0   -2.0      0.2
  SINCE DEC 1      T                         2.0   -2.0      0.2
  SINCE JUL 1      T                         2.7   -2.7      0.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       16                        31    -15       37
  MONTH TO DATE  403                       486    -83      552
  SINCE DEC 1    403                       486    -83      552
  SINCE JUL 1   1105                      1312   -207     1043

 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    15   HIGHEST WIND DIRECTION    SW (230)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED     6.1


SKY COVER
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80           800 PM
 LOWEST     49           100 AM
 AVERAGE    65

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


THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   41        69      1939
                                             1877
 MINIMUM TEMPERATURE (F)   26        -4      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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