98576 Weather (Rainier, WA)

Weather forecast for: Rainier WA

Last Update: 2:39 pm PDT Sep 22, 2026

Tonight: Partly cloudy, with a low around 46. West wind 5 to 7 mph becoming calm in the evening.

Wednesday: Partly sunny, with a high near 68. Light and variable wind.

Wednesday Night: Increasing clouds, with a low around 46. Calm wind.

Thursday: A 20 percent chance of rain after 11am. Cloudy, with a high near 64. Light north wind.

Thursday Night: Rain. Low around 49. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday: Rain before 11am, then a chance of showers and thunderstorms after 11am. High near 61. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 45.

Saturday: Partly sunny, with a high near 63.

Saturday Night: Mostly cloudy, with a low around 44.

Sunday: Mostly cloudy, with a high near 64.

Sunday Night: Mostly cloudy, with a low around 45.

Monday: A slight chance of rain. Mostly cloudy, with a high near 64.

Monday Night: A chance of rain. Mostly cloudy, with a low around 47.

Tuesday: A chance of rain. Mostly cloudy, with a high near 65.