Climatological Report (Monthly)
Issued by NWS

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000
CXUS55 KRIW 011036
CLMRKS

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
243 AM MDT SUN MAY 1 2016

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

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2016 WILL BE
AVAILABLE APPROXIMATELY IN JUNE 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 WARMER AND WETTER THAN NORMAL IN
APRIL...

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN APRIL WAS 43.1
DEGREES...WHICH WAS 1.5 DEGREES ABOVE NORMAL. THE WARMEST READING OF
THE MONTH WAS 70 DEGREES ON THE 22ND. THE COLDEST READING OF THE
MONTH WAS 20 DEGREES ON THE 1ST. NO TEMPERATURE RECORDS WERE SET
DURING THE MONTH.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.48 INCHES...WHICH WAS 163
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS THE
25TH...WHEN 0.69 OF AN INCH OF PRECIPITATION FELL. THIS SET A NEW
RECORD...BREAKING THE PREVIOUS RECORD OF 0.58 SET IN 2009. 0.38 OF
AN INCH OF PRECIPITATION FELL ON THE 10TH...BREAKING THE PREVIOUS
RECORD OF 0.18...SET IN 1991. THE HIGHEST WIND GUST WAS 48 MPH ON THE
14TH.

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              79   04/23/2012
                        04/29/2007
                        04/20/1989
 LOW                2   04/02/1975
HIGHEST            70   04/22
LOWEST             20   04/01
AVG. MAXIMUM     53.3              53.7    -0.4
AVG. MINIMUM     32.9              29.4     3.5
MEAN             43.1              41.6     1.5
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     17
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.74   1999
 MINIMUM            T   2013
TOTALS           1.48              0.91    0.57
DAILY AVG.       0.05              0.03    0.02
DAYS >= .01         9
DAYS >= .10         3
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.69   04/25 TO 04/25

DEGREE_DAYS
HEATING TOTAL     651               703     -52
 SINCE 7/1       7075              7532    -457
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              12.6
RESULTANT WIND SPEED/DIRECTION   2/263
HIGHEST WIND SPEED/DIRECTION    39/260    DATE  04/24
HIGHEST GUST SPEED/DIRECTION    48/180    DATE  04/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       3
LIGHT SNOW               11     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      1
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 2016...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 57 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 32 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 69
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 40 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.19 INCHES.

$$



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