Riverton, WY

4:26 AM MDT on May 20, 2012 (GMT -0600)
Elev: 5410 ft
Lon: 108.4° W
Lat: 43.1° N
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Tropical Weather: Tropical Storm Alberto (North Atlantic) Invest 92 (East Pacific)
Weather Summary
Weather Underground Forecast for Sunday, May 20, 2012. The tropical season got off to a bit of an early start on Saturday as a tropical disturbance off the Carolina Coast became Tropical Storm Alberto. The storm is expected to slowly make its way up the eastern seaboard over the next couple of days, possibly skirting the Outer Banks of North Carolina. Rain and thunderstorms could make their way to the Mid-Atlantic coast as the storm moves northeastward. For more information on this storm, please see http://www.wunderground.com/tropical/.

Meanwhile, a cold front will move through the Plains on its way into the Upper Midwest and Mississippi Valley. This front will provide rain and thunderstorms from Oklahoma through Michigan. Some of these thunderstorms could turn severe, so residents in the Plains should stay on alert for any thunderstorm development in their area. Cool air will spill into the Northern Plains and Upper Midwest behind this front, bringing cool overnight temperatures to the Dakotas and Minnesota.

Also, mostly sunny skies are expected for California and the Southwest, making for nice viewing conditions for the solar eclipse. The eclipse will begin just after 5:00 p.m. Pacific time, and should be able to be viewed from California through western Texas.

The Northeast will rise into the 70s and 80s, while the Southeast will see temperatures in the 80s and 90s. The Mississippi Valley will also rise into the 80s and 90s, while the Southwest will see temperatures in the 90s and 100s.
Weather Underground Forecast for Sunday, May 20, 2012. The tropical season got off to a bit of an early start on Saturday as a tropical disturbance off the Carolina Coast became Tropical Storm Alberto. The storm is expected to slowly make its way up the eastern seaboard over the next couple of days, possibly skirting the Outer Banks of North Carolina. Rain and thunderstorms could make their way to the Mid-Atlantic coast as the storm moves northeastward. For more information on this storm, please see http://www.wunderground.com/tropical/.

Meanwhile, a cold front will move through the Plains on its way into the Upper Midwest and Mississippi Valley. This front will provide rain and thunderstorms from Oklahoma through Michigan. Some of these thunderstorms could turn severe, so residents in the Plains should stay on alert for any thunderstorm development in their area. Cool air will spill into the Northern Plains and Upper Midwest behind this front, bringing cool overnight temperatures to the Dakotas and Minnesota.

Also, mostly sunny skies are expected for California and the Southwest, making for nice viewing conditions for the solar eclipse. The eclipse will begin just after 5:00 p.m. Pacific time, and should be able to be viewed from California through western Texas.

The Northeast will rise into the 70s and 80s, while the Southeast will see temperatures in the 80s and 90s. The Mississippi Valley will also rise into the 80s and 90s, while the Southwest will see temperatures in the 90s and 100s.

Riverton Weather at a Glance

Updated 4:25 AM MDT
Weather Station - report
Elevation
5405 ft
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Now
Clear
Clear
Temperature
42.7 °F
Feels Like 43 °F
Wind(mph)
0.0
Sunrise / Set
5:44 AM
8:36 PM
Moon
Waning Crescent
Today
Clear 73 °F
Clear
Tonight
Partly Cloudy 48 °F
Partly Cloudy
Tomorrow
Clear 84 | 55 °F
Clear
Tuesday
Partly Cloudy 81 | 43 °F
Partly Cloudy
Wednesday
Partly Cloudy 68 | 36 °F
Partly Cloudy
Thursday
Mostly Cloudy 64 | 36 °F
Mostly Cloudy
Today is forecast to be Much Warmer than yesterday.
Conditions
Pressure
30.14 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
83%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KRIW 200953Z AUTO 35003KT 10SM CLR 06/03 A3014
Don't speak METAR? Read our FAQ.
Weather Radio
Temperature
Windchill
43 °F
Dew Point
38 °F
Wind
Speed / Dir
Calm
Wind Gust
Health
UV
0.0 out of 16
Pollen
4.50 out of 12
Pollen Forecast
Air Quality
Not available.
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Sunday
clear Clear. High of 73F. Winds less than 5 mph.
Sunday Night
nt_partlycloudy Partly cloudy in the evening, then clear. Low of 48F. Winds from the West at 5 to 15 mph.
Monday
clear Clear. High of 84F. Winds from the WSW at 5 to 15 mph shifting to the South in the afternoon.
Monday Night
nt_clear Clear in the evening, then partly cloudy. Low of 55F. Winds from the SW at 5 to 10 mph.
Tuesday
partlycloudy Partly cloudy. High of 81F. Windy. Winds from the SW at 15 to 25 mph with gusts to 35 mph.
Tuesday Night
nt_partlycloudy Mostly cloudy in the evening, then partly cloudy. Low of 43F. Breezy. Winds from the WNW at 15 to 25 mph.
Wednesday
partlycloudy Partly cloudy in the morning, then mostly cloudy. High of 68F. Windy. Winds from the West at 20 to 30 mph.
Wednesday Night
nt_partlycloudy Overcast in the evening, then partly cloudy. Low of 36F. Breezy. Winds from the West at 5 to 25 mph.
Thursday
mostlycloudy Clear in the morning, then mostly cloudy. High of 64F. Winds from the NE at 5 to 10 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 36F. Winds from the NNE at 5 to 15 mph.
Friday
partlycloudy Partly cloudy. High of 68F. Winds from the ENE at 5 to 10 mph.
Friday Night
nt_partlycloudy Partly cloudy. Low of 48F. Winds from the North at 5 to 15 mph.
Saturday
clear Partly cloudy. High of 81F. Winds from the East at 5 to 20 mph shifting to the South in the afternoon.
Saturday Night
nt_clear Partly cloudy. Low of 50F. Winds from the SSW at 5 to 20 mph shifting to the North after midnight.
Sunday
clear Partly cloudy. High of 72F. Breezy. Winds from the SE at 5 to 30 mph.
Sunday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Low of 45F. Breezy. Winds from the WSW at 5 to 30 mph. Chance of rain 20%.
Monday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 70F. Winds less than 5 mph. Chance of rain 20%.
Monday Night
nt_chancerain Partly cloudy with a chance of rain. Low of 45F. Winds less than 5 mph. Chance of rain 30%.
Tuesday
chancetstorms Mostly cloudy with a chance of a thunderstorm. High of 61F. Winds less than 5 mph. Chance of rain 20%.
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 45F. Winds less than 5 mph.
Wednesday
clear Clear. High of 64F. Winds less than 5 mph.
Wednesday Night
nt_clear Clear. Low of 45F. Winds less than 5 mph.
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Forecast

View Calendar 10-Day Forecast for station KRIW

Sunday, 20
Clear
73 | 48 °F
Clear
Chance of
Precipitation
0%
Monday, 21
Clear
84 | 55 °F
Clear
Chance of
Precipitation
0%
Tuesday, 22
Partly Cloudy
81 | 43 °F
Partly Cloudy
Chance of
Precipitation
10%
Wednesday, 23
Partly Cloudy
68 | 36 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 24
Mostly Cloudy
64 | 36 °F
Mostly Cloudy
Chance of
Precipitation
0%
Friday, 25
Partly Cloudy
68 | 48 °F
Partly Cloudy
Chance of
Precipitation
0%
Saturday, 26
Clear
81 | 50 °F
Clear
Chance of
Precipitation
0%
Sunday, 27
Clear
72 | 45 °F
Clear
Chance of
Precipitation
0%
Monday, 28
Chance of a Thunderstorm
70 | 45 °F
Chance of T-storms
Chance of
Precipitation
20%
Tuesday, 29
Chance of a Thunderstorm
61 | 45 °F
Chance of T-storms
Chance of
Precipitation
20%
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Sunday
clear Clear. High of 73F. Winds less than 5 mph.
Sunday Night
nt_partlycloudy Partly cloudy in the evening, then clear. Low of 48F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 41 | 27 63 | 30 73 | 27 57 | 28
Wind 4 mph West 5 mph SSE 5 mph SW 8 mph WSW
Humidity 53% 28% 18% 32%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 2% 5% 38% 15%
Conditions Clear Clear Partly Cloudy Clear
Sunrise & Sunset
5:44 AM
8:36 PM
The quality of the forecasted high temperature for this day is excellent. MaxT RMSE [1.08], Average RMSE [1.38]
The National Weather Service forecast quality is excellent. MaxT RMSE [1.25], Average RMSE [2.23] : Use NWS
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Monday
clear Clear. High of 84F. Winds from the WSW at 5 to 15 mph shifting to the South in the afternoon.
Monday Night
nt_clear Clear in the evening, then partly cloudy. Low of 55F. Winds from the SW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 43 66 | 36 84 | 18 55 | 37
Wind 5 mph WSW 6 mph South 9 mph SW 8 mph SW
Humidity 73% 33% 8% 51%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 7% 3% 1% 28%
Conditions Clear Clear Clear Partly Cloudy
Sunrise & Sunset
5:43 AM
8:37 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.88], Average RMSE [2.25]
The National Weather Service forecast quality is excellent. MaxT RMSE [1.44], Average RMSE [2.17] : Use NWS
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy. High of 81F. Windy. Winds from the SW at 15 to 25 mph with gusts to 35 mph.
Tuesday Night
nt_partlycloudy Mostly cloudy in the evening, then partly cloudy. Low of 43F. Breezy. Winds from the WNW at 15 to 25 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 34 72 | 30 68 | 34 50 | 23
Wind 9 mph South 23 mph WSW 22 mph North 17 mph West
Humidity 42% 22% 27% 33%
Chance of Precip. 0% 10% 10% 0%
Cloud Cover 50% 48% 78% 40%
Conditions Partly Cloudy Partly Cloudy Mostly Cloudy Partly Cloudy
Sunrise & Sunset
5:43 AM
8:38 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.67], Average RMSE [2.86]
The National Weather Service forecast quality is good. MaxT RMSE [1.63], Average RMSE [2.88] : Use NWS
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy in the morning, then mostly cloudy. High of 68F. Windy. Winds from the West at 20 to 30 mph.
Wednesday Night
nt_partlycloudy Overcast in the evening, then partly cloudy. Low of 36F. Breezy. Winds from the West at 5 to 25 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 43 | 14 57 | 27 55 | 16 46 | 23
Wind 13 mph WSW 26 mph West 24 mph West 9 mph WSW
Humidity 32% 31% 19% 39%
Chance of Precip. 0% 0% 10% 10%
Cloud Cover 0% 18% 15% 3%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:42 AM
8:39 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.67], Average RMSE [3.12]
The National Weather Service forecast quality is good. MaxT RMSE [2.06], Average RMSE [3.50] : Use NWS
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Thursday
mostlycloudy Clear in the morning, then mostly cloudy. High of 64F. Winds from the NE at 5 to 10 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 36F. Winds from the NNE at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 36 | 28 55 | 30 64 | 28 41 | 32
Wind 3 mph NE 8 mph ENE 9 mph NNE 9 mph NE
Humidity 70% 39% 24% 70%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 21% 47% 100% 100%
Conditions Clear Partly Cloudy Overcast Overcast
Sunrise & Sunset
5:41 AM
8:40 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.65], Average RMSE [3.43]
The National Weather Service forecast quality is fair. MaxT RMSE [2.99], Average RMSE [4.30] : Use NWS
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Friday
partlycloudy Partly cloudy. High of 68F. Winds from the ENE at 5 to 10 mph.
Friday Night
nt_partlycloudy Partly cloudy. Low of 48F. Winds from the North at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 37 | 32 57 | 23 55 | 25 55 | 45
Wind 5 mph NE 8 mph ENE 13 mph NNE 9 mph NNW
Humidity 77% 27% 31% 66%
Chance of Precip. 10% 10% 0% 10%
Cloud Cover 67% 93% 28% 71%
Conditions Mostly Cloudy Overcast Partly Cloudy Mostly Cloudy
Sunrise & Sunset
5:41 AM
8:40 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.81], Average RMSE [4.16]
The National Weather Service forecast quality is poor. MaxT RMSE [3.90], Average RMSE [4.34] : Use NWS
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Saturday
clear Partly cloudy. High of 81F. Winds from the East at 5 to 20 mph shifting to the South in the afternoon.
Saturday Night
nt_clear Partly cloudy. Low of 50F. Winds from the SSW at 5 to 20 mph shifting to the North after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 61 | 45 61 | 27 81 | 39 55 | 41
Wind 4 mph East 4 mph SSE 18 mph SSW 4 mph NW
Humidity 57% 28% 22% 57%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 17% 10% 5% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
8:40 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.20], Average RMSE [5.07]
The National Weather Service forecast quality is poor. MaxT RMSE [4.27], Average RMSE [5.19] : Use NWS
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Sunday
clear Partly cloudy. High of 72F. Breezy. Winds from the SE at 5 to 30 mph.
Sunday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Low of 45F. Breezy. Winds from the WSW at 5 to 30 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 30 63 | 28 61 | 3 50 | 23
Wind 4 mph NE 18 mph SSW 29 mph South 3 mph WNW
Humidity 46% 26% 9% 34%
Chance of Precip. 0% 0% 0% 20%
Cloud Cover 0% 7% 23% 0%
Conditions Clear Clear Clear Chance of a Thunderstorm
Sunrise & Sunset
5:41 AM
8:40 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.95], Average RMSE [5.49]
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Monday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 70F. Winds less than 5 mph. Chance of rain 20%.
Monday Night
nt_chancerain Partly cloudy with a chance of rain. Low of 45F. Winds less than 5 mph. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 45 | 25 59 | 39 61 | 37 48 | 34
Wind 3 mph West 4 mph WSW 5 mph WNW 4 mph NW
Humidity 44% 47% 42% 55%
Chance of Precip. 20% 20% 20% 30%
Cloud Cover 43% 10% 55% 71%
Conditions Chance of Rain Chance of a Thunderstorm Chance of Rain Chance of Rain
Sunrise & Sunset
5:41 AM
8:40 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.72], Average RMSE [6.06]
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Tuesday
chancetstorms Mostly cloudy with a chance of a thunderstorm. High of 61F. Winds less than 5 mph. Chance of rain 20%.
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 45F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 45 | 41 59 | 46 61 | 36 48 | 32
Wind 3 mph NW 3 mph WNW 5 mph NNW 2 mph NW
Humidity 84% 61% 38% 54%
Chance of Precip. 30% 20% 20% 10%
Cloud Cover 92% 78% 65% 39%
Conditions Chance of Rain Chance of a Thunderstorm Chance of Rain Partly Cloudy
Sunrise & Sunset
5:41 AM
8:40 PM
Source: BestForecast at 1:22 AM MDT on May 20, 2012
Descriptive Forecast
Wednesday
clear Clear. High of 64F. Winds less than 5 mph.
Wednesday Night
nt_clear Clear. Low of 45F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 45 | 36 63 | 41 64 | 28 52 | 27
Wind 3 mph West 4 mph West 5 mph NW 2 mph NW
Humidity 69% 47% 25% 36%
Chance of Precip. 10% 10% 10% 0%
Cloud Cover 13% 9% 4% %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
8:40 PM
Nearby
History & Almanac
May 20, 2012 Max Temp Min Temp
Normal (KRIW) - -
Record (KRIW) 87 °F (2006) 26 °F (2003)
Yesterday 63 °F 44 °F
Yesterday's Heating Degree Days: 11
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
Astronomy
May. 20, 2012 Rise Set
Actual Time 5:44 AM MDT 8:36 PM MDT
Civil Twilight 5:11 AM MDT 9:09 PM MDT
Nautical Twilight 4:29 AM MDT 9:52 PM MDT
Astronomical Twilight 3:40 AM MDT 10:41 PM MDT
Moon 5:27 AM MDT 8:38 PM MDT
Length Of Visible Light 15h 58m
Length of Day
14h 51m
Tomorrow will be 1m 52s longer.
Waning Crescent, 0% of the Moon is Illuminated
Today
Waning Crescent
May 20
New
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter
Today's Extremes
State Highs State Lows
51 °F
Greybull
51 °F
Worland
48 °F
Lander
48 °F
Rock Springs
48 °F
Cody
27 °F
Yellowstone
30 °F
Pinedale
30 °F
Jackson
32 °F
Laramie
35 °F
Big Piney
Snow Depth
Station Depth Elevation
Big Sandy Opening 0 in 9080 ft
Gunsight Pass 15 in 9820 ft
New Fork Lake 0 in 8340 ft
Kendall R.S. 1 in 7740 ft
Gros Ventre Summit 0 in 8750 ft
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Travel & Activities
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Nearby Events
Event Date Forecast
No events within 10 mi of location. View all events.
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
Riverton 43 °F Clear 3:53 AM MDT
Thermopolis 45 °F Clear 3:55 AM MDT
Lander 47 °F Clear 3:53 AM MDT
Flight To ETA Status
No flights were found.
Flight Tracker by FlightAware FlightAware
Type Condition
Flight Rule: VFR (KRIW)
Wind Speed: 3.0 kts.
Wind Dir: 286° (WNW)
Ceiling: Unlimited

METAR KRIW 200953Z AUTO 35003KT 10SM CLR 06/03 A3014

Sports
Event Date Forecast
Marlins vs. Indians 1:05 PM EDT on May 20, 2012 Clear, 74 °F
Reds vs. Yankees 1:05 PM EDT on May 20, 2012 Partly Cloudy, 76 °F
Event Date Forecast
Barcelona B vs. Numancia 12:00 PM CEST on May 20, 2012 Rain, High 48° F/ 9° C
Modena vs. Torino 12:30 PM CEST on May 20, 2012 Chance of Rain, High 57° F/ 14° C
Event Date Forecast
Coca-Cola 600 6:16 PM EDT on May 27, 2012 Average High 79° F/ 26° C
FedEx 400 benefiting Autism Speaks 1:15 PM EDT on June 03, 2012 Average High 79° F/ 26° C
Event Date Forecast
HP Byron Nelson Championship 8:30 AM CDT on May 20, 2012 Mostly Cloudy, 67 °F
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 24, 2012 Partly Cloudy, 67 °F
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Riverton, WY 42.7 °F 43 °F 38 °F 83% WNW  at  0.0 mph - / hr 5405 ft 4:25 AM MDT Normal  
APRSWXNET Riverton WY , Riverton, WY 43 °F 43 °F 38 °F 83% North  at  3 mph 0.00 in / hr 5406 ft 3:54 AM MDT MADIS
Shoshoni, WY 43.4 °F 43 °F 40 °F 88% NE  at  0.0 mph 0.00 in / hr 5025 ft 4:20 AM MDT Normal  
HADS LITTLE WIND RIVER NEAR RIVERTON WY, Saint Stephens, WY 45 °F 45 °F - - North  at  - 0.00 in / hr 4900 ft 3:15 AM MDT MADIS
HADS BOYSEN WEATHER STATION NEAR SHOS WY, Shoshoni, WY 53 °F - - - NNE  at  3 mph 0.00 in / hr 4709 ft 3:30 AM MDT MADIS
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Public Information Statement
Mobile & Email Alerts Statement as of 10:53 PM MDT on May 19, 2012

... Record wind gust at the Riverton Airport on may 18th...

A thunderstorm wind gust of 77 mph was recorded at the Riverton
Regional Airport on Friday may 18th.

This was the highest wind gust recorded at the Airport since the
automated surface observing system was commissioned on December 1
1995. Below are a list of some of the strongest wind gusts recorded
at the Riverton Regional Airport since December 1st 1995.

Wind gust (mph) date

   77 5/18/2012
   74 5/20/2008
   71 1/07/2007
   67 5/22/2006
   66 2/16/2007
   64 3/26/2012
   64 6/30/2008
   63 2/14/2000
   62 4/20/2008
   62 9/15/2006
   61 3/03/2012
   61 6/23/2011
   60 10/25/2008
   60 1/08/2007