Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 020853 AAA
CLMP60

CLIMATE REPORT...AMENDED
NATIONAL WEATHER SERVICE RIVERTON WY
222 PM MDT FRI APR 1 2016

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

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

...MARCH WAS SLIGHTLY COOLER AND WETTER THAN NORMAL FOR LAKE
YELLOWSTONE...

THE AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN MARCH WAS 22.5
DEGREES...WHICH WAS 0.5 DEGREES BELOW NORMAL. THE WARMEST READING OF
THE MONTH WAS 49 DEGREES ON THE 11TH. THE COLDEST READING WAS 21
BELOW ON THE 19TH WHICH SET A NEW DAILY RECORD AND BROKE THE
PREVIOUS RECORD OF 11 BELOW BACK IN 2014.
NEW DAILY HIGH RECORDS INCLUDED...
 44 DEGREES ON THE 4TH...  OLD WAS 40 FROM 2010
 46 DEGREES ON THE 5TH...  OLD WAS 40 FROM 2007
 43 DEGREES ON THE 6TH...  OLD WAS 43 FROM 2006
 49 DEGREES ON THE 11TH... OLD WAS 46 FROM 2015
 44 DEGREES ON THE 12TH... TIED WITH 2015

TOTAL PRECIPITATION FOR THE MONTH WAS 2.24 INCHES...WHICH WAS 186
PERCENT OF NORMAL. THIS MAKES IT THE 7TH WETTEST MARCH ON RECORD.
THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE 13TH AND 14TH...WHEN
0.81 OF AN INCH OF PRECIPITATION FELL. ONLY ONE DAILY PRECIPITATION
RECORD WAS SET DURING THE MONTH WHEN 0.75 INCHES FELL THE
14TH...BREAKING THE OLD RECORD OF 0.43 INCHES FROM 2012.
THE HIGHEST WIND GUST WAS 33 MPH ON THE 2ND.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF MARCH
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              55   03/31/2015
                        03/31/2004
                        05/28/2003
 LOW              -29   03/02/2002
HIGHEST            49   03/11
LOWEST            -21   03/19
AVG. MAXIMUM     35.5
AVG. MINIMUM      9.4
MEAN             22.5              23.0    -0.5
DAYS MAX >= 90      0
DAYS MAX <= 32     11
DAYS MIN <= 32     31
DAYS MIN <= 0       9

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.58   2014
 MINIMUM         0.68   1999
TOTALS           2.25              1.21    1.04
DAILY AVG.       0.07
DAYS >= .01        19
DAYS >= .10         7
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.81   03/13 TO 03/14

DEGREE_DAYS
HEATING TOTAL    1309              1302       7
 SINCE 7/1       9093              9239    -146
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              2.9
HIGHEST WIND SPEED/DIRECTION    20/280    DATE  03/02
HIGHEST GUST SPEED/DIRECTION    33/280    DATE  03/02

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)     67

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 APRIL 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 41 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 14 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 47
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 24 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 2.08 INCHES.

$$


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