Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 012011
CLMP60

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
110 PM MST THU DEC 1 2016

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

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

...NOVEMBER WAS RECORD WARM AND DRIER THAN NORMAL FOR LAKE
YELLOWSTONE...

THE AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN NOVEMBER WAS 27.8
DEGREES...WHICH WAS 5.2 DEGREES ABOVE NORMAL. THIS MAKES IT THE 2ND
WARMEST NOVEMBER ON RECORD SINCE 1998. THE WARMEST READING OF THE
MONTH WAS 54 DEGREES ON THE 9TH AND 10TH...AND THE COLDEST READING
WAS 2 BELOW ON THE 30TH. FOUR RECORD DAILY HIGHS WERE SET LAST
MONTH...50 DEGREES ON THE 3RD...BREAKING 48 SET BACK IN 1999...48
DEGREES ON THE 4TH...TYING THE RECORD FROM 2010...54 DEGREES ON THE
9TH...BREAKING 50 SET BACK IN 2007...AND 34 DEGREES ON THE
10TH...BREAKING 48 SET BACK IN 1999.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.34 INCHES...WHICH WAS 64
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE
16TH...WHEN 0.31 OF AN INCH FELL...WHICH ALSO SET A NEW DAILY
RECORD...BREAKING THE PREVIOUS RECORD OF 0.10 SET BACK IN 2003.
THE HIGHEST WIND GUST WAS 24 MPH ON THE 17TH.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER
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              57   11/01/2014
                        11/12/1999
                        11/07/1999
 LOW              -23   11/25/2010
HIGHEST            54   11/10
                        11/09
LOWEST             -2   11/30
AVG. MAXIMUM     38.8
AVG. MINIMUM     16.7
MEAN             27.8              22.6     5.2
DAYS MAX >= 90      0
DAYS MAX <= 32      9
DAYS MIN <= 32     30
DAYS MIN <= 0       2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.66   2005
 MINIMUM         0.42   2000
TOTALS           1.34              2.08   -0.74
DAILY AVG.       0.04
DAYS >= .01        13
DAYS >= .10         7
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.31   11/16 TO 11/16

DEGREE_DAYS
HEATING TOTAL    1108              1272    -164
 SINCE 7/1       3144              3320    -176
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              2.1
HIGHEST WIND SPEED/DIRECTION    14/280    DATE  11/14
HIGHEST GUST SPEED/DIRECTION    24/320    DATE  11/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           30
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     76

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                5     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 DECEMBER 2016...WINTER BEGINS OFFICIALLY AT 344 AM
ON DECEMBER 21ST. THE AVERAGE HIGH TEMPERATURE ON THE FIRST OF THE
MONTH IS 26 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 6 DEGREES.
THE AVERAGE HIGH BY THE END OF THE MONTH IS 24 DEGREES...AND THE
AVERAGE LOW TEMPERATURE IS 2 ABOVE. THE AVERAGE MONTHLY
PRECIPITATION IS 1.50 INCHES.

$$


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