Expires:202405042200;;626658 FPUS55 KRIW 042038 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 236 PM MDT Sat May 4 2024 WYZ001-042200- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 236 PM MDT Sat May 4 2024 ...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH LATE TUESDAY NIGHT... .THIS AFTERNOON...Mostly sunny. Highs in the lower 50s. South winds 10 to 15 mph. .TONIGHT...Partly cloudy in the evening, then mostly cloudy with scattered snow showers after midnight. Lows in the lower 30s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 30 percent. .SUNDAY...Mostly cloudy. Numerous rain showers and scattered snow showers in the morning, then rain showers and scattered thunderstorms in the afternoon. Snow accumulation up to 1 inch. Breezy with highs around 50. South winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 80 percent. .SUNDAY NIGHT...Rain showers and scattered thunderstorms in the evening. Snow showers. Light snow accumulation. Breezy with lows in the mid 20s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 80 percent. .MONDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New moderate snow accumulation. Breezy with highs in the mid 30s. West winds 15 to 25 mph. Gusts up to 40 mph in the afternoon. Chance of snow near 100 percent. .MONDAY NIGHT...Cloudy. Snow showers with a slight chance of thunderstorms in the evening, then snow showers likely after midnight. New light snow accumulation. Breezy with lows in the lower 20s. Chance of snow 90 percent. .TUESDAY...Cloudy with snow showers. New light snow accumulation. Windy with highs in the mid 30s. Chance of snow 80 percent. .TUESDAY NIGHT...Snow showers. New light snow accumulation. Breezy with lows in the lower 20s. Chance of snow 80 percent. .WEDNESDAY...Snow showers. New light snow accumulation. Highs in the upper 30s. Chance of snow 80 percent. .WEDNESDAY NIGHT...Mostly cloudy. Snow showers likely, mainly in the evening. New little or no snow accumulation. Lows in the mid 20s. Chance of snow 60 percent. .THURSDAY...Mostly cloudy. A chance of snow showers in the morning, then snow showers likely with possible rain showers and thunderstorms in the afternoon. Little or no snow accumulation. Highs in the lower 40s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Partly cloudy. A chance of snow showers in the evening. Lows in the mid 20s. Chance of snow 30 percent. .FRIDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of rain and snow showers in the afternoon. Highs in the upper 40s. Chance of precipitation 30 percent. $$