NWS Forecast for: Yellowstone National Park Issued by: National Weather Service Riverton, WY Last Update: 704 PM MDT Thu Oct 22 2020

Hazardous Weather Outlook Winter Storm Watch Tonight: Cloudy then becoming partly cloudy late in the evening then becoming mostly clear. Lows 5 to 11. Friday: Partly cloudy until late afternoon then becoming mostly cloudy. A 30 percent chance of snow showers in the afternoon. Highs 25 to 31. Southwest winds around 15 mph in the afternoon. Friday Night: Breezy. Not as cold. Snow showers. Patchy blowing snow after midnight. Snow accumulation of 2 to 3 inches. Lows 19 to 25. Southwest winds 15 to 20 mph. Chance of snow near 100 percent. Saturday: Snow showers. Snow may be heavy at times in the morning. Snow accumulation of 5 to 7 inches. Highs 24 to 32. West winds around 15 mph shifting to the northwest in the afternoon. Chance of snow 90 percent. Saturday Night: Much colder. Mostly cloudy. Snow showers likely in the evening, then chance of snow showers after midnight. Snow accumulation up to 1 inch. Total snow accumulation 7 to 11 inches. Lows 3 below to 9 below zero. Northeast winds around 15 mph in the evening. Chance of snow 60 percent. Sunday: Colder. Partly cloudy. Highs 8 to 16. Wind chill readings 23 below to 33 below zero. Sunday Night: Mostly clear. Lows 5 below to 11 below zero. Wind chill readings 23 below to 33 below zero. Monday: Not as cold. Mostly sunny. Highs 20 to 28. Lowest wind chill readings 17 below to 27 below zero in the morning. Monday Night: Partly cloudy. Lows 1 to 7. Tuesday: Mostly sunny in the morning then becoming partly cloudy. Highs 27 to 33. Tuesday Night: Partly cloudy in the evening then clearing. Lows 11 to 17. Wednesday: Not as cold. Partly cloudy in the morning then clearing. Highs 34 to 42. Wednesday Night: Mostly clear. Lows 15 to 21. Thursday: Partly cloudy in the morning then clearing. Highs 36 to 44.

Zone Forecast: Yellowstone National Park

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