Climatological Report (Monthly)
Issued by NWS Riverton, WY

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CXUS55 KRIW 012203
CLMRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
403 PM MDT FRI MAY 1 2015

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF APRIL 2015...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2015 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 2015 FROM THE NATIONAL CLIMATIC
DATA CENTER (WWW.NCDC.NOAA.GOV). UNOFFICIAL ASOS DAILY SUMMARIES ARE
ONLINE AT WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW..

...APRIL WAS WARMER AND DRIER THAN NORMAL IN RIVERTON....

THE AVERAGE APRIL TEMPERATURE IN RIVERTON WAS 45.4 DEGREES...WHICH
WAS 1.2 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH WAS
77 DEGREES ON THE 29TH...AND THE COLDEST READING WAS 19 ON THE 3RD.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.82 OF AN INCH...WHICH WAS
63 PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OCCURRED ON THE
25TH AND 26TH WHEN 0.43 OF AN INCH OF PRECIPITATION FELL. THE
HIGHEST WIND GUST WAS 48 MPH FROM THE SOUTH ON THE 14TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2015

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   04/29
LOWEST             19   04/03
AVG. MAXIMUM     58.2              57.1     1.1
AVG. MINIMUM     32.6              31.3     1.3
MEAN             45.4              44.2     1.2
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     15
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.80   1999
 MINIMUM         0.10   2007
TOTALS           0.82              1.30   -0.48
DAILY AVG.       0.03              0.04   -0.01
DAYS >= .01         5
DAYS >= .10         4
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.43   04/25 TO 04/26
 STORM TOTAL       MM
 (MM/DD(HH))

SNOWFALL (INCHES)
TOTALS            3.3                MM      MM
SINCE 7/1        38.6                MM      MM
SNOWDEPTH AVG.      0
DAYS >= 1.0         2

DEGREE_DAYS
HEATING TOTAL     580               624     -44
 SINCE 7/1       6758              7396    -638
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.9
RESULTANT WIND SPEED/DIRECTION   4/330
HIGHEST WIND SPEED/DIRECTION    37/020    DATE  04/18
HIGHEST GUST SPEED/DIRECTION    48/180    DATE  04/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     51

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                5     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

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

LOOKING AHEAD TO MAY 2015...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 57 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 33 DEGREES. BY THE END OF THE MONTH...THE AVERAGE HIGH
TEMPERATURE IS 70 DEGREES AND THE AVERAGE LOW TEMPERATURE IS 44.
MAY IS THE WETTEST MONTH OF THE YEAR WITH AVERAGE MONTHLY
PRECIPITATION OF 1.65 INCHES. THE MONTHLY AVERAGE SNOWFALL IS
14.4 INCHES.

$$







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