Expires:202411221100;;460597 FPUS55 KRIW 220523 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 1021 PM MST Thu Nov 21 2024 WYZ001-221100- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1021 PM MST Thu Nov 21 2024 .TONIGHT...Mostly cloudy. A chance of snow late this evening, then snow likely after midnight. Snow accumulation up to 2 inches. Near steady temperature in the upper 20s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of snow 60 percent. .FRIDAY...Partly cloudy. A chance of snow in the morning. Highs around 40. South winds 10 to 15 mph with gusts up to 30 mph. Chance of snow 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with snow likely after midnight. Little or no snow accumulation. Lows in the mid 20s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 60 percent. .SATURDAY...Snow. Light snow accumulation. Breezy with highs in the lower 30s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Chance of snow 90 percent. .SATURDAY NIGHT...Snow. New light snow accumulation. Breezy, cold with lows 13 to 19. Southwest winds 15 to 25 mph with gusts up to 35 mph. Chance of snow 90 percent. .SUNDAY...Mostly cloudy with snow likely. New light snow accumulation possible. Highs in the mid 20s. Chance of snow 60 percent. .SUNDAY NIGHT...Mostly cloudy with a 40 percent chance of snow. Cold with lows 5 to 10 above. .MONDAY...Mostly cloudy with a 30 percent chance of snow. Highs in the mid 20s. .MONDAY NIGHT...Mostly cloudy with snow likely. Little or no snow accumulation. Cold with lows 10 to 15. Chance of snow 70 percent. .TUESDAY...Mostly cloudy with snow likely. Little or no snow accumulation. Highs in the mid 20s. Chance of snow 60 percent. .TUESDAY NIGHT...Mostly cloudy with snow likely. Little or no snow accumulation. Cold with lows 10 to 15. Chance of snow 60 percent. .WEDNESDAY...Mostly cloudy. Snow likely, mainly in the morning. Little or no snow accumulation. Highs in the mid 20s. Chance of snow 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with snow likely. Little or no snow accumulation. Cold with lows 5 to 10 above. Chance of snow 60 percent. .THANKSGIVING DAY...Mostly cloudy with a 30 percent chance of snow. Highs in the lower 20s. $$