| NWS Forecast for: Upper Wind River Basin Issued by: National Weather Service Riverton, WY Last Update: 1002 PM MDT Tue May 12 2026 | |
| Tonight: Mostly clear. Lows in the mid 40s. Wednesday: Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Breezy with highs in the upper 70s. Northwest winds around 10 mph, increasing to southwest 20 to 25 mph with gusts up to 35 mph in the afternoon. Wednesday Night: Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Breezy with lows in the lower 40s. West winds 20 to 25 mph with gusts up to 40 mph. Chance of rain 40 percent. Thursday: Sunny and very windy. Highs in the mid 60s. West winds 30 to 40 mph with gusts up to 55 mph. Thursday Night: Clear, windy with lows in the upper 30s. West winds 25 to 35 mph with gusts up to 50 mph, diminishing to 10 to 15 mph with gusts up to 25 mph after midnight. Friday: Sunny, windy with highs in the mid 60s. Friday Night: Clear, windy with lows in the upper 30s. Saturday: Mostly sunny in the morning, then becoming partly cloudy. Windy with highs in the lower 60s. Saturday Night: Partly cloudy. A slight chance of rain and snow showers after midnight. Breezy with lows in the mid 30s. Chance of precipitation 20 percent. Sunday: Snow showers, rain showers likely with a slight chance of thunderstorms in the morning, then snow showers, rain showers with a chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs around 50. Chance of precipitation 80 percent. Sunday Night: A slight chance of thunderstorms in the evening. Snow and rain showers. Light snow accumulation. Lows in the upper 20s. Chance of precipitation 80 percent. Monday: Snow showers likely. A slight chance of rain showers in the morning, then rain showers likely with a slight chance of thunderstorms in the afternoon. New little or no snow accumulation. Highs in the mid 40s. Chance of precipitation 60 percent. Monday Night: Mostly cloudy with a chance of rain showers, snow showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 20s. Chance of precipitation 40 percent. Tuesday: Partly cloudy with a slight chance of rain and snow showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the mid 50s. Chance of precipitation 20 percent. | |
| Zone Forecast: Upper Wind River Basin | |
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