Expires:202512202300;;936648 FPUS55 KRIW 202134 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 232 PM MST Sat Dec 20 2025 WYZ010-202300- Northeast Johnson County- Including the city of Buffalo 232 PM MST Sat Dec 20 2025 .THIS AFTERNOON...Mostly sunny. Cooler with highs in the mid 30s. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 20. South winds around 10 mph. .SUNDAY...Mostly cloudy. Highs in the mid 40s. South winds around 10 mph with gusts up to 20 mph. .SUNDAY NIGHT...Partly cloudy and breezy. Lows in the mid 30s. Southwest winds 15 to 20 mph. Gusts up to 35 mph after midnight. .MONDAY...Partly cloudy and breezy. Highs in the mid 50s. Temperature falling into the mid 40s in the afternoon. Southwest winds 15 to 20 mph with gusts up to 35 mph, becoming northwest 10 to 15 mph with gusts up to 25 mph in the afternoon. .MONDAY NIGHT...Mostly cloudy. Lows around 30. .TUESDAY...Mostly cloudy. Highs in the lower 50s. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. .WEDNESDAY...Partly cloudy in the morning, then clearing. Breezy with highs around 60. .WEDNESDAY NIGHT...Mostly cloudy and breezy. Lows around 40. .CHRISTMAS DAY...Partly cloudy in the morning, then clearing. Highs in the mid 50s. .THURSDAY NIGHT...Mostly cloudy. Lows in the lower 30s. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs around 50. $$