| NWS Forecast for: Green Mountains and Rattlesnake Range Issued by: National Weather Service Riverton, WY Last Update: 1247 PM MDT Sun Oct 11 2026 |  |
This Afternoon: Showers with a slight chance of thunderstorms. Windy with highs in the lower 60s. South winds 20 to 30 mph with gusts up to 55 mph. Chance of rain 80 percent. Tonight: Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely after midnight. Windy with lows in the lower 40s. Southwest winds 25 to 35 mph with gusts up to 65 mph. Chance of rain 60 percent. Columbus Day: Partly cloudy. Showers likely in the morning, then showers with a slight chance of thunderstorms in the afternoon. Breezy with highs in the upper 50s. Southwest winds 15 to 25 mph. Gusts up to 45 mph, decreasing to 35 mph in the afternoon. Chance of rain 80 percent. Monday Night: Showers with a slight chance of thunderstorms. Lows in the upper 30s. South winds around 10 mph with gusts up to 20 mph. Chance of rain 90 percent. Tuesday: Mostly cloudy. Rain showers likely in the morning, then rain showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 50s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 80 percent. Tuesday Night: Rain showers with a slight chance of thunderstorms in the evening, then rain showers with a slight chance of snow showers after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 90 percent. Wednesday: Rain showers with snow showers likely in the morning, then rain showers likely with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs in the mid 40s. Chance of precipitation 80 percent. Wednesday Night: Mostly cloudy with a 40 percent chance of rain showers. Lows in the lower 30s. Thursday: Partly cloudy in the morning, then clearing. A 30 percent chance of rain showers. Highs in the upper 40s. Thursday Night: Mostly clear. Lows in the upper 20s. Friday: Mostly sunny. Highs in the mid 50s. Friday Night: Clear. Lows in the lower 30s. Saturday: Sunny, breezy with highs in the lower 60s. | |
| Zone Forecast: Green Mountains and Rattlesnake Range | |
Visit your local NWS office at: https://www.weather.gov/riw |