Climatological Report (Daily)
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CDUS45 KRIW 180741
CLIP60


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1241 AM MST MON DEC 18 2017


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

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 17 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         14    456 PM  35    2013  23     -9        3
  MINIMUM         -9    614 AM -28    2016   3    -12      -28
  AVERAGE          3                        13    -10      -12

PRECIPITATION (IN)
  YESTERDAY        0.01          0.53 2003   0.04  -0.03     0.00
  MONTH TO DATE    0.77                      0.77   0.00     2.10
  SINCE DEC 1      0.77                      0.77   0.00     2.10
  SINCE JAN 1     32.27                     19.57  12.70    23.10

DEGREE DAYS
 HEATING
  YESTERDAY       62                        52     10       77
  MONTH TO DATE  854                       861     -7      953
  SINCE DEC 1    854                       861     -7      953
  SINCE JUL 1   4223                      4181     42     4097

 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     7   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    11   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     1.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           800 PM
 LOWEST     74           500 AM
 AVERAGE    87

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


THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   23        34      2013
 MINIMUM TEMPERATURE (F)    3       -23      2016


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   754 AM MST   SUNSET   443 PM MST
DECEMBER 19 2017......SUNRISE   754 AM MST   SUNSET   444 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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