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CLMRKS

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CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
233 AM MDT SUN JUN 2 2013

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR SWEETWATER COUNTY AIRPORT
NEAR ROCK SPRINGS FOR THE MONTH OF MAY 2013...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2013 WILL BE
AVAILABLE APPROXIMATELY IN JULY 2013 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.CRH.NOAA.GOV/RIW/CLIMATE/...

...ROCK SPRINGS WAS SLIGHTLY WARMER AND DRIER THAN NORMAL IN MAY...

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN MAY WAS 52.8
DEGREES...WHICH WAS 2.0 DEGREES ABOVE NORMAL. THE WARMEST DAILY HIGH
FOR THE MONTH WAS 81 DEGREES ON THE 13TH AND THE 14TH. BOTH SET NEW
RECORD HIGHS...BREAKING OR TYING THE PREVIOUS RECORDS OF 80 DEGREES
AND 81 DEGREES...SET IN 1996 AND 1976...RESPECTIVELY. THE COLDEST
READING FOR THE MONTH WAS 21 DEGREES ON THE 2ND.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.56...WHICH WAS 46 PERCENT OF
NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE 19TH THROUGH
THE 20TH...WHEN 0.33 OF AN INCH OF PRECIPITATION FELL. THERE WERE NO
PRECIPITATION RECORDS SET FOR THE MONTH. THE HIGHEST WIND GUST WAS
58 MPH...WHICH OCCURRED ON THE 16TH.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2013

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            81   05/14
                        05/13
LOWEST             21   05/02
AVG. MAXIMUM     66.1              63.8     2.3
AVG. MINIMUM     39.5              37.7     1.8
MEAN             52.8              50.8     2.0
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      3
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.67   1995
 MINIMUM         0.00   1974
                        1969
TOTALS           0.56              1.21   -0.65
DAILY AVG.       0.02              0.04   -0.02
DAYS >= .01         6
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.33   05/19 TO 05/20

DEGREE_DAYS
HEATING TOTAL     371               443     -72
 SINCE 7/1       7584              7975    -391
COOLING TOTAL       1                 1       0
 SINCE 1/1          1                 1       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.6
RESULTANT WIND SPEED/DIRECTION   3/260
HIGHEST WIND SPEED/DIRECTION    45/260    DATE  05/16
HIGHEST GUST SPEED/DIRECTION    58/260    DATE  05/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     45

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      0
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 2013...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 69 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 41. THE AVERAGE HIGH BY THE END OF THE MONTH IS 80 DEGREES...AND
THE AVERAGE LOW TEMPERATURE IS 50. THE AVERAGE MONTHLY PRECIPITATION
IS 0.85 INCHES.

$$