Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 012050
CLMRKS

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
150 PM MST THU JAN 1 2015

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SWEETWATER COUNTY
AIRPORT NEAR ROCK SPRINGS FOR THE MONTH OF DECEMBER 2014...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 2014 WILL BE
AVAILABLE APPROXIMATELY IN FEBRUARY 2015 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.CRH.NOAA.GOV/RIW/CLIMATE/...

...ROCK SPRINGS WAS WARMER AND DRIER THAN NORMAL IN DECEMBER...

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN DECEMBER WAS 24.3
DEGREES... WHICH WAS 3.2 DEGREES ABOVE NORMAL. THE WARMEST READING
FOR THE MONTH WAS 49 DEGREES ON THE 12TH...AND THE COLDEST WAS 21
BELOW ON THE 31ST. THERE WERE NO DAILY RECORD TEMPERATURES DURING
THE MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS ONLY 0.11 OF AN INCH...WHICH
WAS 22 PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH
WAS THE 25TH...WHEN 0.08 OF AN INCH OF PRECIPITATION FELL. THE
HIGHEST WIND GUST WAS 59 MPH...WHICH OCCURRED ON THE 21ST.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              58   12/16/2013
 LOW              -29   12/22/1990
                        12/21/1990
                        12/31/1978
HIGHEST            49   12/12
LOWEST            -21   12/31
AVG. MAXIMUM     32.7              29.8     2.9
AVG. MINIMUM     15.8              12.5     3.3
MEAN             24.3              21.1     3.2
DAYS MAX >= 90      0
DAYS MAX <= 32     12
DAYS MIN <= 32     30
DAYS MIN <= 0       3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.78   1975
 MINIMUM         0.00   1962
TOTALS           0.11              0.50   -0.39
DAILY AVG.       0.00              0.02   -0.02
DAYS >= .01         3
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.08   12/25 TO 12/25

DEGREE_DAYS
HEATING TOTAL    1256              1359    -103
 SINCE 7/1       3072              3352    -280
COOLING TOTAL       0                 0       0
 SINCE 1/1        307               286      21
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.2
RESULTANT WIND SPEED/DIRECTION   5/242
HIGHEST WIND SPEED/DIRECTION    45/260    DATE  12/21
HIGHEST GUST SPEED/DIRECTION    59/280    DATE  12/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       5
LIGHT SNOW               13     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      5
HAZE                      4

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

LOOKING AHEAD TO JANUARY 2015...THE AVERAGE HIGH TEMPERATURE
ON THE FIRST OF THE MONTH IS 30 DEGREES...AND THE AVERAGE LOW
TEMPERATURE IS 12. THE AVERAGE HIGH BY THE END OF THE MONTH IS 31
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 12. THE AVERAGE MONTHLY
PRECIPITATION IS 0.45 INCHES.

$$





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