605
CXUS55 KRIW 012025
CLMRIW
CYSCLMRIW 000
TTAA00 KRIW 011931
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
224 PM MDT THU OCT 1 2009
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF SEPTEMBER 2009...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF SEPTEMBER 2009 WILL BE AVAILABLE
APPROXIMATELY IN NOVEMBER 2009 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/...
...THE RIVERTON AIRPORT WAS WARMER AND DRIER THAN NORMAL IN SEPTEMBER...
THE AVERAGE TEMPERATURE FOR THE RIVERTON AIRPORT WAS 62.1
DEGREES...WHICH WAS 4.8 DEGREES ABOVE NORMAL. THE HIGHEST READING
WAS 88 DEGREES...WHICH OCCURRED ON THE 26TH. THE LOWEST READING WAS
31 DEGREES...WHICH OCCURRED ON THE 28TH.
TOTAL PRECIPITATION FOR THE MONTH WAS 0.55 INCHES...WHICH WAS 0.33
INCHES BELOW NORMAL FOR SEPTEMBER...WHICH IS 0.88 INCHES.
...THE RIVERTON REGIONAL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER
2009...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1995 TO 2009
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
............................................
TEMPERATURE (F)
RECORD
HIGH 93 09/04/2007
09/16/2000
LOW 21 09/27/1996
HIGHEST 88 09/26 MM MM
LOWEST 31 09/28 MM MM
AVG. MAXIMUM 77.4 75.8 1.6
AVG. MINIMUM 46.8 38.7 8.1
MEAN 62.1 57.3 4.8
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 2
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 0.67 2008
MINIMUM 0.59 2007
2006
TOTALS 0.55 0.88 -0.33
DAILY AVG. 0.02 0.03 -0.01
DAYS >= .01 5
DAYS >= .10 2
DAYS >= .50 0
DAYS >= 1.00 0
SNOWFALL (INCHES)
TOTALS 1.2 0.7 0.5
SINCE 7/1 1.2 0.7 0.5
SNOWDEPTH AVG. 0
DAYS >= 1.0 1
DEGREE_DAYS
HEATING TOTAL 133 253 -120
SINCE 7/1 194 315 -121
COOLING TOTAL 53 20 33
SINCE 1/1 360 433 -73
.............................................
WIND (MPH)
AVERAGE WIND SPEED 7.8
HIGHEST WIND SPEED/DIRECTION 41/010 DATE 09/20
HIGHEST GUST SPEED/DIRECTION 51/020 DATE 09/20
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 28
NUMBER OF DAYS PC 2
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 40
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 1
LIGHT RAIN 4 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 1 FOG W/VIS <= 1/4 MILE 0
HAZE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO OCTOBER 2009. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 69 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 34 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 52
DEGREES...AND THE AVERAGE LOW IS 21 DEGREES. THE AVERAGE MONTHLY
PRECIPITATION IS 0.81 INCHES.
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