Climatological Report (Monthly)
Issued by NWS Riverton, WY

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CXUS55 KRIW 012020
CLMRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1137 AM MDT FRI SEP 1 2017

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF AUGUST 2017...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF AUGUST 2017 WILL BE
AVAILABLE APPROXIMATELY IN OCTOBER 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...

...RIVERTON WAS SLIGHTLY COOLER AND WETTER THAN NORMAL IN AUGUST...

THE AVERAGE TEMPERATURE FOR RIVERTON IN AUGUST WAS 68.8 DEGREES...
WHICH WAS 0.9 DEGREES BELOW NORMAL. THIS MAKES IT THE 8TH COLDEST
AUGUST ON RECORD. THE WARMEST READING OF THE MONTH WAS 92 DEGREES ON
THE 1ST...26TH AND THE 29TH. THE COLDEST READING WAS 48 DEGREES ON
THE 16TH. A RECORD LOW OF 51 DEGREES OCCURRED ON THE 3RD...BREAKING
THE PREVIOUS RECORD OF 53...SET IN 2012. A RECORD LOW OF 49 DEGREES
OCCURRED ON THE 9TH...TYING THE PREVIOUS RECORD SET IN 2009.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.94 INCHES...WHICH WAS 165
PERCENT OF NORMAL. THIS MAKES IT THE 3RD WETTEST AUGUST ON RECORD.
THE WETTEST 24 HOUR PERIOD WAS ON THE 12TH...WHEN 0.46 OF AN INCH
FELL AND SET A NEW RECORD. THIS BROKE THE PREVIOUS RECORD OF
0.12...SET IN 1999. 0.12 OF AN INCH OF PRECIPITATION FELL ON THE
1ST...BREAKING THE PREVIOUS RECORD OF 0.10...SET IN 2006. 0.18 OF AN
INCH OF PRECIPITATION FELL ON THE 6TH...BREAKING THE PREVIOUS RECORD
OF 0.01...SET IN 2009. THE HIGHEST WIND GUST WAS 50 MPH ON THE 12TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              99   08/14/2003
                        08/06/2001
 LOW               39   08/20/2016
                        08/23/2015
                        01/12/1963
HIGHEST            92   08/29
                        08/26
                        08/01
LOWEST             48   08/16
AVG. MAXIMUM     83.7              85.2    -1.5
AVG. MINIMUM     53.8              54.3    -0.5
MEAN             68.8              69.7    -0.9
DAYS MAX >= 90      6
DAYS MAX <= 32      0
DAYS MIN <= 32      0
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.15   2014
 MINIMUM         0.03   2013
TOTALS           0.94              0.57    0.37
DAILY AVG.       0.03              0.02    0.01
DAYS >= .01         7
DAYS >= .10         4
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.46   08/12 TO 08/12

SNOWFALL (INCHES)
TOTALS            0.0                MM      MM
SINCE 7/1         0.0                MM      MM
SNOWDEPTH AVG.      0
DAYS >= 1.0         0

DEGREE_DAYS
HEATING TOTAL       7                26     -19
 SINCE 7/1          7                38     -31
COOLING TOTAL     133               173     -40
 SINCE 1/1        480               468      12
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.0
RESULTANT WIND SPEED/DIRECTION   2/341
HIGHEST WIND SPEED/DIRECTION    40/260    DATE  08/08
HIGHEST GUST SPEED/DIRECTION    50/340    DATE  08/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.10
NUMBER OF DAYS FAIR           27
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     43

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       3     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 SEPTEMBER 2017...THE AVERAGE HIGH TEMPERATURE ON
THE FIRST OF THE MONTH IS 80 DEGREES...AND THE AVERAGE LOW
TEMPERATURE IS 50 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH
IS 65 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 38. THE AVERAGE
MONTHLY PRECIPITATION IS 0.90 INCHES.

$$



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