Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011232
CLMRKS

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
335 AM MDT MON MAY 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE SWEETWATER COUNTY
AIRPORT NEAR ROCK SPRINGS FOR THE MONTH OF APRIL 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2017 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 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...

...APRIL WAS DRIER THAN NORMAL IN ROCK SPRINGS...

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN MARCH WAS 42.2
DEGREES...WHICH WAS 0.6 DEGREES ABOVE NORMAL. THE WARMEST READING OF
THE MONTH WAS 69 DEGREES ON THE 13TH. THE COLDEST READING WAS 22
DEGREES ON THE 10TH. NO TEMPERATURE RECORDS WERE SET DURING THE
MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.55 INCHES...WHICH WAS 60
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD WAS THE 23RD...WHEN
0.15 OF AN INCH FELL. NO PRECIPITATION RECORDS WERE SET DURING THE
MONTH. THE HIGHEST WIND GUST WAS 49 MPH ON THE 13TH.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              79   04/23/2012
                        04/29/2007
                        04/20/1989
 LOW                2   04/02/1975
HIGHEST            69   04/13
LOWEST             22   04/10
AVG. MAXIMUM     53.5              53.7    -0.2
AVG. MINIMUM     31.0              29.4     1.6
MEAN             42.2              41.6     0.6
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     20
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.74   1999
 MINIMUM            T   2013
TOTALS           0.55              0.91   -0.36
DAILY AVG.       0.02              0.03   -0.01
DAYS >= .01        10
DAYS >= .10         3
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.15   04/23 TO 04/23

DEGREE_DAYS
HEATING TOTAL     674               703     -29
 SINCE 7/1       7192              7532    -340
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              13.3
RESULTANT WIND SPEED/DIRECTION   9/251
HIGHEST WIND SPEED/DIRECTION    41/200    DATE  04/13
HIGHEST GUST SPEED/DIRECTION    49/190    DATE  04/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           13
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     52

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                2     SNOW                       3
LIGHT SNOW               12     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      2
HAZE                      2

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

LOOKING AHEAD TO MAY 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 59 DEGREES... AND THE AVERAGE LOW TEMPERATURE
IS 33 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 69
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 42 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.21 INCHES.

$$



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