Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 020919 AAA
CLMRKS

CLIMATE REPORT...AMENDED
NATIONAL WEATHER SERVICE RIVERTON WY
640 PM MDT THU JUN 1 2017

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2017 WILL BE
AVAILABLE APPROXIMATELY IN JULY 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...

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

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN MAY WAS 51.1
DEGREES...WHICH WAS 0.3 DEGREES ABOVE NORMAL. THE WARMEST READING OF
THE MONTH WAS 78 DEGREES ON THE 31ST. THE COLDEST READING WAS 27
DEGREES ON THE 19TH. A RECORD LOW OF 28 DEGREES ON THE 18TH TIES
FOR THE RECORD FROM 1971.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.64 INCHES...WHICH WAS 53
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD WAS THE 18TH...WHEN
0.44 OF AN INCH FELL. NO PRECIPITATION RECORDS WERE SET DURING THE
MONTH. THE HIGHEST WIND GUST WAS 50 MPH ON THE 22ND.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF MAY 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              90   05/31/2002
 LOW               18   05/07/2010
                        05/05/2010
                        05/02/1954
HIGHEST            78   05/31
LOWEST             27   05/19
AVG. MAXIMUM     64.0              63.8     0.2
AVG. MINIMUM     38.1              37.7     0.4
MEAN             51.1              50.8     0.3
DAYS MAX >= 90      0
DAYS MAX <= 32      1
DAYS MIN <= 32      5
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.67   1995
 MINIMUM         0.00   1974
                        1969
TOTALS           0.64              1.21   -0.57
DAILY AVG.       0.02              0.04   -0.02
DAYS >= .01         4
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.44   05/18 TO 05/18

DEGREE_DAYS
HEATING TOTAL     423               443     -20
 SINCE 7/1       7615              7975    -360
COOLING TOTAL       0                 1      -1
 SINCE 1/1          0                 1      -1
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.6
RESULTANT WIND SPEED/DIRECTION   3/239
HIGHEST WIND SPEED/DIRECTION    39/260    DATE  05/24
HIGHEST GUST SPEED/DIRECTION    50/050    DATE  05/22

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     50

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

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

LOOKING AHEAD TO JUNE 2017...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 69 DEGREES... AND THE AVERAGE LOW TEMPERATURE
IS 42 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 80
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 51 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.79 INCHES.

$$



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