| NWS Forecast for: Yellowstone National Park Issued by: National Weather Service Riverton, WY Last Update: 717 PM MDT Thu Aug 13 2026 | |
| Tonight: Cloudy. Showers with a chance of thunderstorms this evening, then showers likely with a slight chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall this evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the lower 40s. Chance of rain 80 percent. Friday: Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs around 60. Southwest winds around 10 mph in the afternoon. Chance of rain 60 percent. Friday Night: Mostly cloudy with showers with a chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 40s. Southwest winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 80 percent. Saturday: Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the morning, then rain showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 70 percent. Saturday Night: Partly cloudy. Rain showers likely with a chance of thunderstorms in the evening. Lows around 40. Southwest winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 60 percent. Sunday: Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the upper 60s. Sunday Night: Partly cloudy. Lows in the lower 40s. Monday: Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. Monday Night: A chance of thunderstorms in the evening. Mostly cloudy with showers likely. Lows in the lower 40s. Chance of rain 60 percent. Tuesday: Mostly cloudy with a chance of showers in the morning, then partly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 70 percent. Tuesday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows around 40. Chance of rain 50 percent. Wednesday: Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. Wednesday Night: Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows around 40. Chance of rain 30 percent. Thursday: Partly cloudy in the morning, then mostly sunny with a slight chance of rain showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 20 percent. | |
| Zone Forecast: Yellowstone National Park | |
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