| NWS Forecast for: Yellowstone National Park Issued by: National Weather Service Riverton, WY Last Update: 218 PM MDT Mon Apr 20 2026 | |
This Afternoon: Partly cloudy. Near steady temperature in the mid 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Tonight: Mostly clear. Lows in the lower 30s. South winds 10 to 15 mph. Tuesday: Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. South winds 10 to 15 mph with gusts up to 25 mph. Tuesday Night: Partly cloudy with scattered rain showers. Lows in the lower 30s. South winds around 10 mph with gusts up to 25 mph. Chance of rain 30 percent. Wednesday: Partly cloudy with a chance of snow and rain showers in the morning, then mostly cloudy with snow showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy with highs in the mid 40s. Temperature falling into the upper 30s in the afternoon. Southwest winds 15 to 20 mph with gusts up to 40 mph. Chance of precipitation 90 percent. Wednesday Night: Snow showers with a slight chance of thunderstorms in the evening, then snow showers after midnight. Moderate snow accumulation. Breezy with lows in the mid 20s. Chance of snow near 100 percent. Thursday: Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs in the mid 30s. Chance of snow 90 percent. Thursday Night: Snow showers with a slight chance of thunderstorms in the evening, then snow showers likely after midnight. New moderate snow accumulation. Cold with lows 14 to 20. Chance of snow 80 percent. Friday: Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs around 30. Chance of snow 80 percent. Friday Night: Partly cloudy with a 40 percent chance of snow showers. Cold with lows 10 to 15. Saturday: Partly cloudy with a 30 percent chance of snow showers. Highs in the lower 30s. Saturday Night: Mostly cloudy with a chance of snow showers in the evening, then partly cloudy after midnight. Cold with lows 10 to 15. Chance of snow 30 percent. Sunday: Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 30 percent. | |
| Zone Forecast: Yellowstone National Park | |
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