Climatological Report (Monthly)
Issued by NWS Riverton, WY

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CXUS55 KRIW 011027
CLMRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
243 AM MDT SUN MAY 1 2016

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF APRIL 2016...

..OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2016 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 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

...APRIL WAS SLIGHTLY WARMER AND MUCH WETTER THAN NORMAL AT
RIVERTON...

THE AVERAGE TEMPERATURE FOR RIVERTON IN APRIL WAS 45.9 DEGREES...
WHICH WAS 1.7 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE
MONTH WAS 77 DEGREES ON THE 22ND. THE COLDEST READING OF THE MONTH
WAS 24 DEGREES ON THE 1ST. A RECORD HIGH OF 75 DEGREES OCCURRED ON
THE 9TH...TYING THE PREVIOUS RECORD SET IN 1996.

TOTAL PRECIPITATION FOR THE MONTH WAS 3.31 INCHES...WHICH WAS 255
PERCENT OF NORMAL. THIS MAKES IT THE WETTEST APRIL ON RECORD. THE
WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE 25TH AND 26TH...WHEN 0.94
OF AN INCH OF PRECIPITATION FELL. NEW RECORDS WERE SET ON BOTH
DAYS...WITH 0.49 OF AN INCH FELL ON THE 25TH...AND 0.79 OF AN INCH
FELL ON THE 26TH. THESE BROKE THE PREVIOUS RECORDS OF 0.46 AND
0.31...SET IN 1999 AND 2015...RESPECTIVELY. 0.47 OF AN INCH OF
PRECIPITATION FELL ON THE 19TH...BREAKING THE PREVIOUS RECORD OF
0.33...SET IN 2000. 0.78 OF AN INCH OF PRECIPITATION FELL ON THE
24TH...BREAKING THE PREVIOUS RECORD OF 0.26...SET IN 2008. TOTAL
SNOWFALL FOR APRIL WAS 12.7 INCHES...WHICH MAKES IT THE 4TH SNOWIEST
APRIL ON RECORD. 1.1 INCHES OF SNOW FELL ON THE 18TH...BREAKING
THE PREVIOUS RECORD OF 0.6...SET IN 2006. 3.6 INCHES OF SNOW ALSO
FELL ON THE 26TH...BREAKING THE PREVIOUS RECORD FO 2.2...SET IN
2011. THE HIGHEST WIND GUST WAS 59 MPH ON THE 4TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              85   04/24/2012
 LOW                4   04/10/2013
                        04/11/1997
                        01/12/1963
HIGHEST            77   04/22
LOWEST             24   04/01
AVG. MAXIMUM     56.9              57.1    -0.2
AVG. MINIMUM     35.0              31.3     3.7
MEAN             45.9              44.2     1.7
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     10
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.80   1999
 MINIMUM         0.10   2007
TOTALS           3.31R             1.30    2.01
DAILY AVG.       0.11              0.04    0.07
DAYS >= .01        11
DAYS >= .10         7
DAYS >= .50         2
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.94   04/25 TO 04/26

SNOWFALL (INCHES)
TOTALS           12.7                MM      MM
SINCE 7/1        62.4                MM      MM
SNOWDEPTH AVG.      0
DAYS >= 1.0         4

DEGREE_DAYS
HEATING TOTAL     562               624     -62
 SINCE 7/1       6693              7396    -703
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
RESULTANT WIND SPEED/DIRECTION   4/320
HIGHEST WIND SPEED/DIRECTION    43/310    DATE  04/06
HIGHEST GUST SPEED/DIRECTION    59/260    DATE  04/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       3
LIGHT SNOW                8     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

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

LOOKING AHEAD TO MAY 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 58 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 33 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 74
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 45 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.81 INCHES.

$$



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