Climatological Report (Monthly)
Issued by NWS Riverton, WY

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046
CXUS55 KRIW 012019
CLMRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
115 PM MDT SUN APR 1 2018

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF MARCH 2018...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MARCH 2018 WILL BE
AVAILABLE APPROXIMATELY IN 60 DAYS FROM THE NATIONAL CENTERS FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-
WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE
INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...MARCH WAS WETTER THAN NORMAL FOR RIVERTON...

THE AVERAGE TEMPERATURE FOR RIVERTON IN MARCH WAS 35.8 DEGREES...
WHICH WAS ONLY 0.4 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE
MONTH WAS 65 DEGREES ON THE 22ND...AND COLDEST WAS 12 DEGREES ON THE
1ST. THERE WERE NO TEMPERATURE RECORDS BROKEN THIS MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.73 INCHES...WHICH WAS 133
PERCENT OF NORMAL. THIS MAKES IT THE 6TH WETTEST MARCH ON RECORD
SINCE 1998. THE WETTEST 24 HOUR PERIOD WAS ON THE 26TH...WHEN 0.2
INCHES FELL. THIS BROKE THE PREVIOUS RECORD OF 0.05 INCHES SET BACK
IN 2003. THE 4TH ALSO SAW RECORD BREAKING PRECIPITATION OF 0.02
INCHES COMPARED TO 0.01 IN 2008...AND THE 25TH HAD 0.21 INCHES
BREAKING THE 2015 RECORD OF 0.1. THE 28TH ALSO BROKE A RECORD WITH
0.21 INCHES COMPARED TO 0.15 SET IN 2007.

RIVERTON HAD 7.5 INCHES OF SNOW IN MARCH...THE 3RD SNOWIEST ON
RECORD SINCE 1998. THE SNOWIEST DAY WAS THE 26TH WHEN 4.7 INCHES
FELL. THIS ALSO BROKE THE 2016 RECORD OF JUST 0.5 INCHES OF SNOW.
THE HIGHEST WIND GUST WAS 47 MPH ON THE 5TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF MARCH 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              76   03/31/2012
 LOW               -9   03/04/2015
HIGHEST            65   03/22
LOWEST             12   03/01
AVG. MAXIMUM     48.3              47.4     0.9
AVG. MINIMUM     23.4              23.4     0.0
MEAN             35.8              35.4     0.4
DAYS MAX >= 90      0
DAYS MAX <= 32      1
DAYS MIN <= 32     30
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.71   2017
 MINIMUM            T   2004
TOTALS           0.73              0.55    0.18
DAILY AVG.       0.02              0.02    0.00
DAYS >= .01         4
DAYS >= .10         3
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.29   03/26 TO 03/26
 STORM TOTAL       MM
 (MM/DD(HH))

SNOWFALL (INCHES)
TOTALS            7.5                MM      MM
SINCE 7/1        44.1                MM      MM
SNOWDEPTH AVG.      0
DAYS >= 1.0         3

DEGREE_DAYS
HEATING TOTAL     897               918     -21
 SINCE 7/1       6693              6772     -79
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.4
RESULTANT WIND SPEED/DIRECTION   4/296
HIGHEST WIND SPEED/DIRECTION    37/290    DATE  03/05
HIGHEST GUST SPEED/DIRECTION    47/300    DATE  03/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     46

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       3
LIGHT SNOW                5     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      4
HAZE                      2

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

LOOKING AHEAD TO APRIL 2018...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 53 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 28 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 62
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 35. THE AVERAGE MONTHLY
PRECIPITATION IS 1.30 INCHES.

$$



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