SXUS46 KSEW 121033 RECSEW Mount Rainier Recreational Forecast National Weather Service Seattle WA 333 AM PDT Wed Aug 12 2026 .SYNOPSIS... Weak upper level trough over the park through Friday. Weak upper level ridge building in from the southeast with southerly flow aloft over the weekend. Another weak upper level trough will arrive Monday and Tuesday. && .WEDNESDAY...Sunny in the morning. Partly cloudy with a slight chance of showers in the afternoon. A slight chance of thunderstorms late in the afternoon. Snow level near 10500 feet. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers in the evening. Snow level near 10000 feet. .THURSDAY...Sunny in the morning. Partly cloudy with a slight chance of showers or thunderstorms in the afternoon. Snow level near 10500 feet. .THURSDAY NIGHT...Partly cloudy. A slight chance of thunderstorms and showers in the evening. Snow level near 10500 feet. .FRIDAY...Sunny in the morning. Partly cloudy with a slight chance of showers or thunderstorms in the afternoon. Snow level near 10000 feet. && Temperature and wind forecasts for selected locations. Wed Wed Thu Thu Fri Night Night Summit (14411 FT) 20 20 20 18 19 SW 20 W 10 W 5 SW 10 SW 15 Camp Muir(10188 FT) 43 38 44 38 43 S 5 SE 10 SE 10 S 15 S 15 Paradise (5420 FT) 61 47 63 50 62 W 5 N 5 Calm NW 5 W 5 Longmire (2760 FT) 71 50 73 52 73 W 5 Calm W 5 Calm SW 5 ++ Temperatures and wind for the summit and Camp Muir are average conditions expected in the free air at those elevations. ++ Temperatures for Paradise and Longmire are the expected highs and lows. Wind is the average wind expected during that period. .Extended Forecast... .FRIDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Snow level near 10500 feet. .SATURDAY...Partly sunny. A chance of showers and a slight chance of thunderstorms in the afternoon. Snow level near 10500 feet. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers in the evening. Snow level near 10500 feet. .SUNDAY...Partly sunny. Freezing level near 13000 feet. .SUNDAY NIGHT...Mostly cloudy. A slight chance of showers in the evening. Snow level near 10500 feet. .MONDAY...Partly sunny. A slight chance of showers in the afternoon. Snow level near 10000 feet. .MONDAY NIGHT...Mostly cloudy with a slight chance of showers. Snow level near 10500 feet. .TUESDAY...Partly sunny. A slight chance of showers in the afternoon. Snow level near 10000 feet. $$ www.weather.gov/seattle