| NWS Forecast for: Bighorn Mountains Southeast Issued by: National Weather Service Riverton, WY Last Update: 601 PM MDT Mon May 18 2026 |  |
| Tonight: Cloudy with snow showers this evening, then mostly clear after midnight. Snow accumulation up to 3 inches. Cold with lows around 20. North winds around 10 mph with gusts up to 20 mph, becoming west with gusts up to 30 mph after midnight. Chance of snow 80 percent. Tuesday: Mostly sunny. Highs in the lower 40s. West winds 10 to 15 mph with gusts up to 25 mph. Tuesday Night: Partly cloudy in the evening, then clearing. Lows in the mid 20s. West winds 10 to 15 mph with gusts up to 25 mph. Wednesday: Mostly sunny. A chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 50s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 30 percent. Wednesday Night: Partly cloudy. A chance of snow showers after midnight. Lows in the mid 30s. West winds 10 to 15 mph with gusts up to 25 mph, becoming northwest after midnight. Chance of snow 30 percent. Thursday: Mostly cloudy. Snow showers likely with a chance of rain showers in the morning, then snow showers, rain showers with a chance of thunderstorms in the afternoon. Light snow accumulation. Highs in the mid 40s. Chance of precipitation 80 percent. Thursday Night: Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. Rain and snow showers likely. New little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 60 percent. Friday: Partly cloudy with a chance of rain and snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 50s. Chance of precipitation 30 percent. Friday Night: Partly cloudy in the evening, then clearing. Lows in the mid 30s. Saturday: Mostly sunny. A slight chance of. Highs around 60. Saturday Night: Mostly clear. Lows in the lower 40s. Sunday: Mostly sunny. Highs in the upper 60s. Sunday Night: Mostly clear. Lows in the mid 40s. Memorial Day: Mostly sunny. A slight chance of. Breezy with highs around 70. | |
| Zone Forecast: Bighorn Mountains Southeast | |
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