Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 010936
CLMRKS

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
149 AM MDT WED JUN 1 2016

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR ROCK SPRINGS FOR THE
MONTH OF MAY 2016...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2016 WILL BE AVAILABLE
APPROXIMATELY IN JULY 2016 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.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...ROCK SPRINGS WAS SLIGHTLY COOLER AND WETTER THAN NORMAL IN MAY...

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN MAY WAS 48.3
DEGREES...WHICH WAS 2.5 DEGREES BELOW NORMAL. THE WARMEST READING OF
THE MONTH WAS 74 DEGREES ON THE 5TH. THE COLDEST READING OF THE
MONTH WAS 25 DEGREES ON THE 2ND. NO TEMPERATURE RECORDS WERE SET
DURING THE MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 2.20 INCHES...WHICH WAS 182
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE
6TH AND 7TH...WHEN 1.30 OF AN INCH OF PRECIPITATION FELL. NEW
RECORDS WERE SET ON BOTH DAYS...WITH 0.61 OF AN INCH ON THE
6TH...AND 0.78 OF AN INCH ON THE 7TH. THESE BROKE THE PREVIOUS
RECORDS OF 0.35 AND 0.26...SET IN 1978 AND 1961...RESPECTIVELY. 0.54
OF AN INCH OF PRECIPITATION FELL ON THE 8TH...BREAKING THE PREVIOUS
RECORD OF 0.44...SET IN 1964. THE HIGHEST WIND GUST WAS 62 MPH ON
THE 24TH.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2016

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            74   05/05
LOWEST             25   05/02
AVG. MAXIMUM     60.7              63.8    -3.1
AVG. MINIMUM     36.0              37.7    -1.7
MEAN             48.3              50.8    -2.5
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      9
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.67   1995
 MINIMUM         0.00   1974
                        1969
TOTALS           2.20              1.21    0.99
DAILY AVG.       0.07              0.04    0.03
DAYS >= .01         9
DAYS >= .10         4
DAYS >= .50         3
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    1.30   05/06 TO 05/07

DEGREE_DAYS
HEATING TOTAL     510               443      67
 SINCE 7/1       7585              7975    -390
COOLING TOTAL       0                 1      -1
 SINCE 1/1          0                 1      -1
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.3
RESULTANT WIND SPEED/DIRECTION   2/248
HIGHEST WIND SPEED/DIRECTION    52/250    DATE  05/24
HIGHEST GUST SPEED/DIRECTION    62/250    DATE  05/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     59

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       6
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                4     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      2
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 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 70 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 42 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 81
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 51 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.85 INCHES.

$$



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