Climatological Report (Monthly)
Issued by NWS

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841
CXUS55 KRIW 022225
CLMP60

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
621 AM MST TUE FEB 2 2016

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE LAKE YELLOWSTONE FOR
THE MONTH OF JANUARY 2016...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 2016 WILL BE
AVAILABLE APPROXIMATELY IN MARCH 2016 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

...JANUARY WAS WARMER AND SLIGHTLY DRIER THAN NORMAL FOR LAKE
YELLOWSTONE...

THE AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN JANUARY WAS 15.1
DEGREES...WHICH WAS 2.4 DEGREES ABOVE NORMAL. THIS MAKES IT THE
3RD WARMEST JANAURY ON RECORD. THE WARMEST READING OF THE MONTH WAS
35 DEGREES ON THE 28TH...SETTING A NEW RECORD. THIS TIED THE
PREVIOUS RECORD SET IN 2015. THE COLDEST READING OF THE MONTH WAS
-22 DEGREES ON THE 1ST...WHICH ALSO SET A NEW RECORD. THIS BROKE THE
PREVIOUS RECORD OF -21...SET IN 2011.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.21 INCHES...WHICH WAS 57
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE
29TH AND 30TH...WHEN 0.46 OF AN INCH OF PRECIPITATION FELL. NO
PRECIPITATION RECORDS WERE SET DURING THE MONTH. THE HIGHEST WIND
GUST WAS 24 MPH ON THE 30TH.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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              42   01/27/2015
                        01/20/2005
                        01/16/1974
 LOW              -36   01/12/2007
HIGHEST            35   01/28
LOWEST            -22   01/01
AVG. MAXIMUM     24.3
AVG. MINIMUM      6.0
MEAN             15.1              12.7     2.4
DAYS MAX >= 90      0
DAYS MAX <= 32     30
DAYS MIN <= 32     31
DAYS MIN <= 0       8

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.46   2006
 MINIMUM         0.14   2009
TOTALS           1.21              2.11   -0.90
DAILY AVG.       0.04
DAYS >= .01        15
DAYS >= .10         4
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.46   01/29 TO 01/30

DEGREE_DAYS
HEATING TOTAL    1536              1621     -85
 SINCE 7/1       6469              6531     -62
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              1.5
HIGHEST WIND SPEED/DIRECTION    16/280    DATE  01/30
HIGHEST GUST SPEED/DIRECTION    24/270    DATE  01/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           31
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     78

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                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       0     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

LOOKING AHEAD TO FEBRUARY 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 21 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS
-2 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 28
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 3 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.19 INCHES.

$$



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