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

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660
CDUS43 KLSX 212127
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
426 PM CDT THU SEP 21 2017


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

...THE ST. LOUIS CLIMATE SUMMARY FOR SEPTEMBER 21 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         89    259 PM  97    1881  78     11       90
  MINIMUM         75    609 AM  40    1983  58     17       73
  AVERAGE         82                        68     14       82

PRECIPITATION (IN)
  TODAY            0.00          1.78 1947   0.10  -0.10     0.00
  MONTH TO DATE    0.27                      2.16  -1.89     4.68
  SINCE SEP 1      0.27                      2.16  -1.89     4.68
  SINCE JAN 1     30.57                     29.91   0.66    33.16

SNOWFALL (IN)
  TODAY            0.0           0.0  2015   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY            0                         2     -2        0
  MONTH TO DATE    6                        13     -7        0
  SINCE SEP 1      6                        13     -7        0
  SINCE JUL 1      6                        14     -8        0

 COOLING
  TODAY           17                         5     12       17
  MONTH TO DATE  170                       169      1      257
  SINCE SEP 1    170                       169      1      257
  SINCE JAN 1   1772                      1568    204     1962
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION    SE (120)
  AVERAGE WIND SPEED     6.6


SKY COVER
  AVERAGE SKY COVER 0.5



RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82           500 AM
 LOWEST     56           300 PM
 AVERAGE    69

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


THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        95      1956
 MINIMUM TEMPERATURE (F)   58        40      1995
                                             1974


SUNRISE AND SUNSET
SEPTEMBER 21 2017.....SUNRISE   649 AM CDT   SUNSET   700 PM CDT
SEPTEMBER 22 2017.....SUNRISE   649 AM CDT   SUNSET   658 PM CDT


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




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