Expires:202512211100;;950650 FPUS55 KRIW 210434 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 932 PM MST Sat Dec 20 2025 WYZ026-211100- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 932 PM MST Sat Dec 20 2025 .TONIGHT...Mostly cloudy. Scattered snow showers after midnight. Lows in the lower 20s. Southeast winds around 10 mph after midnight. Chance of snow 30 percent. .SUNDAY...Snow and rain showers. Snow accumulation up to 3 inches. Breezy with highs in the mid 40s. South winds around 10 mph with gusts up to 20 mph, becoming southwest 15 to 20 mph with gusts up to 35 mph in the afternoon. Chance of precipitation 80 percent. .SUNDAY NIGHT...Mostly cloudy. Numerous rain showers, mainly in the evening. Breezy with lows around 30. Southwest winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 60 percent. .MONDAY...Mostly cloudy with scattered rain and snow showers. Breezy with highs in the upper 40s. Southwest winds 15 to 25 mph with gusts up to 35 mph. Chance of precipitation 40 percent. .MONDAY NIGHT...Mostly cloudy. Scattered rain and snow showers in the evening. Lows in the mid 20s. Southwest winds around 10 mph in the evening. Chance of precipitation 30 percent. .TUESDAY...Mostly cloudy. Highs in the mid 40s. .TUESDAY NIGHT...Cloudy. Lows in the mid 20s. .WEDNESDAY...Partly cloudy in the morning, then mostly cloudy with a chance of rain and snow showers in the afternoon. Highs in the upper 40s. Chance of precipitation 30 percent. .WEDNESDAY NIGHT...A slight chance of snow showers. Rain showers. Little or no snow accumulation. Lows around 30. Chance of precipitation 80 percent. .CHRISTMAS DAY...Partly cloudy in the morning, then becoming mostly cloudy. Rain and snow showers likely. Little or no snow accumulation. Highs in the mid 40s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Mostly cloudy with snow showers likely with a chance of rain showers. Little or no snow accumulation. Lows in the mid 20s. Chance of precipitation 60 percent. .FRIDAY...Mostly cloudy. Snow showers likely with a slight chance of rain showers in the morning, then a chance of snow showers in the afternoon. Little or no snow accumulation. Highs in the lower 40s. Chance of precipitation 60 percent. .FRIDAY NIGHT...Partly cloudy. Cold with lows 15 to 20. .SATURDAY...Mostly sunny. Highs in the mid 30s. $$