Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 022038
CLMP60

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
242 PM MDT SAT APR 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE LAKE YELLOWSTONE FOR
THE MONTH OF MARCH 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MARCH 2017 WILL BE
AVAILABLE APPROXIMATELY IN MAY 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

...LAKE YELLOWSTONE WAS MUCH WARMER AND WETTER IN MARCH...

THE AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN MARCH WAS 29.2
DEGREES...WHICH WAS 6.2 DEGREES ABOVE NORMAL. THIS MAKES IT THE
WARMEST MARCH ON RECORD. THE WARMEST READING OF THE MONTH WAS ON THE
18TH...SETTING A NEW RECORD HIGH. THIS BROKE THE PREVIOUS RECORD OF
50 DEGREES...SET IN 2007. A RECORD HIGH OF 51 DEGREES OCCURRED ON
THE 15TH...BREAKING THE PREVIOUS RECORD OF 50 DEGREES...SET IN 2015.
THE COLDEST READING WAS 0 DEGREES ON THE 1ST.

TOTAL PRECIPITATION FOR THE MONTH WAS 2.49 INCHES...WHICH WAS 206
PERCENT OF NORMAL. THIS MAKES IT THE 5TH WETTEST MARCH ON RECORD.
THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE 19TH...WHEN 0.32
INCHES FELL...AND SETTING A NEW RECORD. THIS BARELY BROKE THE
PREVIOUS RECORD OF 0.30...SET IN 2012. 0.31 OF AN INCH OF
PRECIPITATION FELL ON THE 5TH...BREAKING THE PREVIOUS RECORD OF
0.12...SET IN 2009. THE HIGHEST WIND GUST WAS 35 MPH ON THE 7TH.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF MARCH 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              55   03/31/2015
                        03/31/2004
                        05/28/2003
 LOW              -29   03/02/2002
HIGHEST            54   03/18
LOWEST              0   03/01
AVG. MAXIMUM     38.5
AVG. MINIMUM     19.9
MEAN             29.2              23.0     6.2
DAYS MAX >= 90      0
DAYS MAX <= 32      5
DAYS MIN <= 32     31
DAYS MIN <= 0       1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.58   2014
 MINIMUM         0.68   1999
TOTALS           2.49              1.21    1.28
DAILY AVG.       0.08
DAYS >= .01        19
DAYS >= .10         9
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.32   03/19 TO 03/19

DEGREE_DAYS
HEATING TOTAL    1102              1302    -200
 SINCE 7/1       9160              9239     -79
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              3.5
HIGHEST WIND SPEED/DIRECTION    18/270    DATE  03/07
HIGHEST GUST SPEED/DIRECTION    35/290    DATE  03/07

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)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                4     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 APRIL 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 41 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 14 DEGREES. THE AVERAGE HIGH TEMPERATURE BY THE END OF THE MONTH
IS 47 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 24. THE AVERAGE
MONTHLY PRECIPITATION IS 2.08 INCHES.

$$



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