Climatological Report (Monthly)
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CXUS55 KRIW 161801
CLMP60


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1101 AM MST WED JAN 16 2019

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

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              46   12/12/2014
 LOW              -34   12/21/1998
HIGHEST            38   12/17
LOWEST            -21   12/31
AVG. MAXIMUM     22.8
AVG. MINIMUM      3.6
MEAN             13.2              13.7    -0.5
DAYS MAX >= 90      0
DAYS MAX <= 32     29
DAYS MIN <= 32     31
DAYS MIN <= 0      13

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.15   2007
 MINIMUM         0.37   2000
TOTALS           1.37              1.50   -0.13
DAILY AVG.       0.04
DAYS >= .01        15
DAYS >= .10         4
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.36   12/30 TO 12/30

DEGREE_DAYS
HEATING TOTAL    1599              1590       9
 SINCE 7/1       5106              4910     196
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              2.4
HIGHEST WIND SPEED/DIRECTION    17/280    DATE  12/19
HIGHEST GUST SPEED/DIRECTION    29/260    DATE  12/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           31
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  0
  0
  0
  0
  0
  0
HAZE                      0

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

$$


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