Climatological Report (Daily)
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CDUS45 KRIW 200733
CLIP60


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT WED SEP 20 2017


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

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 19 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         38   1255 AM  72    2010  61    -23       64
                                      2009
  MINIMUM         28    807 PM  22    2003  30     -2       32
  AVERAGE         33                        46    -13       48

PRECIPITATION (IN)
  YESTERDAY        0.92R         0.56 2004   0.04   0.88     0.00
  MONTH TO DATE    3.10                      0.92   2.18     0.99
  SINCE SEP 1      3.10                      0.92   2.18     0.99
  SINCE JAN 1     25.40                     14.99  10.41    12.22

DEGREE DAYS
 HEATING
  YESTERDAY       32                        19     13       17
  MONTH TO DATE  288                       308    -20      358
  SINCE SEP 1    288                       308    -20      358
  SINCE JUL 1    841                       895    -54      941

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


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED     5.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     82          1100 AM
 AVERAGE    91

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


THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   60        69      2016
                                             2012
 MINIMUM TEMPERATURE (F)   30        20      2000


SUNRISE AND SUNSET
SEPTEMBER 20 2017.....SUNRISE   707 AM MDT   SUNSET   722 PM MDT
SEPTEMBER 21 2017.....SUNRISE   708 AM MDT   SUNSET   720 PM MDT


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




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