Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 020015
CLMBPI

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
514 PM MST SUN JAN 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE MILEY MEMORIAL FIELD
IN BIG PINEY FOR THE MONTH OF DECEMBER 2016...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 2016 WILL BE
AVAILABLE APPROXIMATELY IN FEBRUARY 2017 FROM THE NATIONAL CLIMATIC
DATA CENTER (HTTP://WWW.NCDC.NOAA.GOV/OL/CLIMATEDATA.HTML).
UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE INTERNET AT
HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...BIG PINEY HAD COLDER AND RECORD WET DECEMBER...

THE AVERAGE TEMPERATURE FOR BIG PINEY IN DECEMBER WAS 9.1
DEGREES...WHICH WAS 3.5 DEGREES BELOW NORMAL. THE WARMEST READING
FOR THE MONTH WAS 40 DEGREES ON THE 15TH...AND THE COLDEST READING
WAS 23 DEGREES BELOW ZERO ON THE 17TH. THERE WAS ONE DAILY RECORD
LOW LAST MONTH...21 DEGREES BELOW ZERO ON THE 18TH...BREAKING 17
BELOW SET BACK IN 2008.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.55 INCHES...WHICH WAS 0.25
INCHES ABOVE NORMAL FOR THE MONTH AND 183 PERCENT OF THE NORMAL.
THIS MAKES IT THE SECOND WETTEST DECEMBER ON RECORD SINCE 1998.
THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON THE 14TH...WHEN
0.15 INCHES FELL. TWO DAILY PRECIPITATION RECORDS WERE SET LAST
MONTH...0.09 OF AN INCH SET ON THE 16TH...BREAKING 0.02 SET BACK IN
2002...AND 0.12 INCHES FELL ON THE 25TH...BREAKING 0.01 THAT FELL
BACK IN 1994. THE HIGHEST WIND GUST WAS 48 MPH ON THE 5TH.

...THE BIG PINEY  WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER
2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1976 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              52   12/02/2005
 LOW              -50   12/23/1983
HIGHEST            40   12/15
LOWEST            -23   12/17
AVG. MAXIMUM     23.8              26.5    -2.7
AVG. MINIMUM     -5.6              -1.3    -4.3
MEAN              9.1              12.6    -3.5
DAYS MAX >= 90      0
DAYS MAX <= 32     26
DAYS MIN <= 32     31
DAYS MIN <= 0      19

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.39   1983
 MINIMUM            T   2009
                        1989
TOTALS           0.55              0.30    0.25
DAILY AVG.       0.02
DAYS >= .01         9
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.18   12/24 TO 12/25

DEGREE_DAYS
HEATING TOTAL    1728              1624     104
 SINCE 7/1       4177              4439    -262
COOLING TOTAL       0                 0       0
 SINCE 1/1         23                35     -12
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.8
HIGHEST WIND SPEED/DIRECTION    35/300    DATE  12/05
HIGHEST GUST SPEED/DIRECTION    48/300    DATE  12/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       5
LIGHT SNOW               17     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      1
HAZE                      6

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

LOOKING AHEAD TO JANUARY 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 26 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 4 DEGREES BELOW ZERO.
THE AVERAGE HIGH BY THE END OF THE MONTH IS 26 DEGREES...AND THE
AVERAGE LOW TEMPERATURE IS 4 BELOW. THE AVERAGE MONTHLY
PRECIPITATION IS 0.31 INCHES.

$$



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