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Climatological Report (Monthly)
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CXUS55 KRIW 301942
CLMLND


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1241 PM MST MON JAN 30 2017

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

...THE LANDER WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              65   12/11/1937
                        12/10/1933
 LOW              -40   12/19/1924
HIGHEST            50   12/20
LOWEST            -21   12/17
AVG. MAXIMUM     28.6              31.8    -3.2
AVG. MINIMUM      4.8               9.6    -4.8
MEAN             16.7              20.7    -4.0
DAYS MAX >= 90      0
DAYS MAX <= 32     20
DAYS MIN <= 32     31
DAYS MIN <= 0       7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.06   1909
 MINIMUM            T   1933
                        1931
                        1910
TOTALS           0.90              0.58    0.32
DAILY AVG.       0.03              0.02    0.01
DAYS >= .01         5
DAYS >= .10         2
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.52   12/16 TO 12/17

SNOWFALL (INCHES)
TOTALS            9.1              10.1    -1.0
SINCE 7/1        23.1              35.7   -12.6
SNOWDEPTH AVG.      2
DAYS >= 1.0         2

DEGREE_DAYS
HEATING TOTAL    1491              1373     118
 SINCE 7/1       3047              3246    -199
COOLING TOTAL       0                 0       0
 SINCE 1/1        562               472      90
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
RESULTANT WIND SPEED/DIRECTION   2/264
HIGHEST WIND SPEED/DIRECTION    36/300    DATE  12/05
HIGHEST GUST SPEED/DIRECTION    48/230    DATE  12/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           24
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                6     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      2
HAZE                      5

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

$$
National Weather Service Regional Headquarters
