Climatological Report (Monthly)
Issued by NWS Riverton, WY

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CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1154 AM MST SUN FEB 1 2015

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF JANUARY 2015...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 2015 WILL BE
AVAILABLE APPROXIMATELY IN MARCH 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/...

...JANUARY WAS SLIGHTLY WARMER AND MUCH DRIER THAN NORMAL IN
RIVERTON....

THE AVERAGE TEMPERATURE FOR RIVERTON IN JANUARY WAS 22.5
DEGREES...WHICH WAS 2.6 DEGREES ABOVE NORMAL. THE WARMEST READING
FOR THE MONTH WAS 48 DEGREES ON THE 6TH AND 18TH. A NEW RECORD HIGH
TEMPERATURE OF 47 DEGREES OCCURRED ON THE 24TH...BREAKING THE
PREVIOUS RECORD OF 46...SET IN 2013. THE COLDEST READING OF THE
MONTH WAS -17 DEGREES ON THE 1ST...WHICH ALSO BROKE THE PREVIOUS
RECORD OF -13...SET 2011.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.03 OF AN INCH...WHICH WAS 13
PERCENT OF NORMAL. THIS MAKES IT THE 2ND DRIEST JANUARY ON RECORD.
THE WETTEST 24 HOUR PERIOD OCCURRED ON THE 11TH...WHEN 0.03 OF AN
INCH OF PRECIPITATION FELL. NO PRECIPITATION RECORDS WERE SET DURING
THE MONTH. THE HIGHEST WIND GUST WAS 48 MPH...WHICH OCCURRED ON THE
17TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              57   01/19/2009
 LOW              -25   01/22/2008
HIGHEST            48   01/18
                        01/06
LOWEST            -17   01/01
AVG. MAXIMUM     32.0              31.3     0.7
AVG. MINIMUM     13.0               8.5     4.5
MEAN             22.5              19.9     2.6
DAYS MAX >= 90      0
DAYS MAX <= 32     15
DAYS MIN <= 32     31
DAYS MIN <= 0       5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.68   2014
 MINIMUM         0.01   1999
TOTALS           0.03              0.24   -0.21
DAILY AVG.       0.00              0.01   -0.01
DAYS >= .01         1
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.03   01/11 TO 01/11

SNOWFALL (INCHES)
TOTALS            0.4                MM      MM
SINCE 7/1        12.8                MM      MM
SNOWDEPTH AVG.      1
DAYS >= 1.0         0

DEGREE_DAYS
HEATING TOTAL    1311              1398     -87
 SINCE 7/1       4392              4715    -323
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.5
RESULTANT WIND SPEED/DIRECTION   2/301
HIGHEST WIND SPEED/DIRECTION    38/280    DATE  01/17
HIGHEST GUST SPEED/DIRECTION    48/290    DATE  01/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          6

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          1     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                5     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      7
HAZE                      5

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

LOOKING AHEAD TO FEBRUARY 2015...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 32 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 10 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 42
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 21. THE AVERAGE MONTHLY
PRECIPITATION IS 0.32 INCHES. THE MONTHLY AVERAGE SNOWFALL IS 7.4
INCHES.

$$






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