Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 020120
CLMBYG

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

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE JOHNSON COUNTY
AIRPORT NEAR BUFFALO 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

...DECEMBER WAS A MUCH COOLER AND DRIER MONTH FOR BUFFALO...

THE AVERAGE TEMPERATURE FOR BUFFALO IN DECEMBER WAS 19 DEGREES...
WHICH WAS 6.9 DEGREES BLOW NORMAL. THE WARMEST READING OF THE MONTH
WAS 52 DEGREES ON THE 30TH...AND THE COLDEST WAS 20 DEGREES BELOW
ZERO ON THE 17TH. THIS WAS ALSO A NEW DAILY RECORD LOW...20 DEGREES
BELOW ZERO ON THE 17TH...BROKE THE PREVIOUS RECORD OF 6 BELOW SET
BACK IN 2005.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.25 INCHES...WHICH WAS .15
INCHES BELOW NORMAL FOR THE MONTH OR ONLY 63 PERCENT OF NORMAL. THE
WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON THE 25TH...WHEN 0.11
INCHES FELL.
THREE DAILY PRECIPITATION RECORDS FELL IN DECEMBER...0.07 INCHES
FELL ON THE 5TH...BREAKING 0.02 SET BACK IN 2005...0.05 INCHES
ON THE 16TH...BREAKING A TRACE THAT FELL IN 2006...AND 0.11 INCHES ON
THE 25TH...BREAKING A TRACE THAT FELL IN 2009. THE HIGHEST WIND GUST
WAS 62 MPH ON THE 25TH.

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

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              70   12/12/2005
 LOW              -24   12/21/1998
HIGHEST            52   12/30
LOWEST            -20   12/17
AVG. MAXIMUM     28.8              36.5    -7.7
AVG. MINIMUM      9.2              15.2    -6.0
MEAN             19.0              25.9    -6.9
DAYS MAX >= 90      0
DAYS MAX <= 32     15
DAYS MIN <= 32     31
DAYS MIN <= 0       8

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.54   1999
 MINIMUM         0.00   2009
TOTALS           0.25              0.40   -0.15
DAILY AVG.       0.01
DAYS >= .01         4
DAYS >= .10         1
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.11   12/25 TO 12/25
                        12/24 TO 12/25
                        12/25 TO 12/25

DEGREE_DAYS
HEATING TOTAL    1421              1213     208
 SINCE 7/1       2603              3047    -444
COOLING TOTAL       0                 0       0
 SINCE 1/1        632               492     140
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.7
HIGHEST WIND SPEED/DIRECTION    52/360    DATE  12/25
HIGHEST GUST SPEED/DIRECTION    62/350    DATE  12/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     56

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                3     SNOW                       5
LIGHT SNOW               15     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      1
HAZE                     11

-  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 38 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 16 DEGREES.
THE AVERAGE HIGH BY THE END OF THE MONTH IS 37 DEGREES...AND THE
AVERAGE LOW TEMPERATURE IS 17 DEGREES. THE AVERAGE MONTHLY
PRECIPITATION IS 0.42 INCHES.

$$



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