Weather forecast for: Chehalis WA
Last Update: 11:26 am PDT Sep 25, 2026
Tonight: Partly cloudy, with a low around 42. West wind 5 to 7 mph becoming light and variable after midnight.
Saturday: Increasing clouds, with a high near 62. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night: Cloudy, then gradually becoming partly cloudy, with a low around 42. North wind 5 to 7 mph.
Sunday: Mostly sunny, with a high near 66. North wind 3 to 7 mph.
Sunday Night: Mostly clear, with a low around 40. Light north wind.
Monday: Partly sunny, with a high near 67.
Monday Night: A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 47.
Tuesday: A chance of rain. Cloudy, with a high near 62.
Tuesday Night: A slight chance of rain. Mostly cloudy, with a low around 47.
Wednesday: A slight chance of rain. Mostly cloudy, with a high near 65.
Wednesday Night: A chance of rain. Mostly cloudy, with a low around 45.
Thursday: A chance of rain. Partly sunny, with a high near 62.
Thursday Night: A slight chance of rain. Partly cloudy, with a low around 42.
Friday: Mostly sunny, with a high near 63.