Climatological Report (Daily)
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CDUS45 KRIW 170753
CLIP60


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1250 AM MST SUN DEC 17 2017


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

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 16 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         23    236 PM  33    1998  23      0       28
  MINIMUM          0   1159 PM -18    2016   3     -3      -18
  AVERAGE         12                        13     -1        5

PRECIPITATION (IN)
  YESTERDAY        0.24R         0.12 2009   0.05   0.19    MM
  MONTH TO DATE    0.76                      0.73   0.03     2.10
  SINCE DEC 1      0.76                      0.73   0.03     2.10
  SINCE JAN 1     32.26                     19.53  12.73    23.10

DEGREE DAYS
 HEATING
  YESTERDAY       53                        52      1       60
  MONTH TO DATE  792                       809    -17      876
  SINCE DEC 1    792                       809    -17      876
  SINCE JUL 1   4161                      4129     32     4020

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     0.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           600 AM
 LOWEST     77           600 PM
 AVERAGE    89

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


THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   23        35      2013
 MINIMUM TEMPERATURE (F)    3       -28      2016


SUNRISE AND SUNSET
DECEMBER 17 2017......SUNRISE   753 AM MST   SUNSET   443 PM MST
DECEMBER 18 2017......SUNRISE   754 AM MST   SUNSET   443 PM MST


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




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