Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 012315 CCA
CLMRKS

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

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR ROCK SPRINGS-SWEETWATER
COUNTY 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..

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

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN APRIL WAS 42.3 DEGREES...
WHICH WAS 0.7 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE
MONTH WAS 79 DEGREES ON THE 29TH. THE COLDEST READING OF THE MONTH
WAS 17 DEGREES ON THE 3RD.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.67 OF AN INCH...WHICH WAS
74 PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON
THE 26TH AND 27TH WHEN 0.28 OF AN INCH OF PRECIPITATION FELL. THE
HIGHEST WIND GUST WAS 57 MPH FROM THE SOUTH ON THE 14TH.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2015

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            72   04/29
LOWEST             17   04/03
AVG. MAXIMUM     54.5              53.7     0.8
AVG. MINIMUM     30.1              29.4     0.7
MEAN             42.3              41.6     0.7
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     22
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.74   1999
 MINIMUM            T   2013
TOTALS           0.67              0.91   -0.24
DAILY AVG.       0.02              0.03   -0.01
DAYS >= .01         8
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.28   04/26 TO 04/27

DEGREE_DAYS
HEATING TOTAL     672               703     -31
 SINCE 7/1       6558              7532    -974
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.9
RESULTANT WIND SPEED/DIRECTION   4/256
HIGHEST WIND SPEED/DIRECTION    44/210    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    57/180    DATE  04/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       3
LIGHT SNOW                9     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      2
HAZE                      3

-  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 32. THE AVERAGE HIGH BY THE END OF THE MONTH IS 68 DEGREES...AND
THE AVERAGE LOW TEMPERATURE IS 41. MAY IS THE WETTEST MONTH OF THE
YEAR WITH AN AVERAGE MONTHLY PRECIPITATION OF 1.21 INCHES.

$$








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