Weather forecast for: Cosmopolis WA
Last Update: 12:41 pm PDT Oct 27, 2026
This Afternoon: A 20 percent chance of rain after 4pm. Partly sunny, with a high near 56. West wind around 10 mph.
Tonight: Rain and thunderstorms. Low around 44. West southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday: Rain. High near 53. West southwest wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night: Rain. Low around 40. South southeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday: Rain. High near 52. Southeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night: Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday: A slight chance of rain, then showers and possibly a thunderstorm after 11am. High near 52. Chance of precipitation is 80%.
Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 38.
Saturday: A chance of rain. Mostly cloudy, with a high near 55.
Saturday Night: A slight chance of rain. Mostly cloudy, with a low around 37.
Sunday: Mostly sunny, with a high near 56.
Sunday Night: Partly cloudy, with a low around 38.
Monday: Partly sunny, with a high near 58.