| NWS Forecast for: Lower Chehalis River Valley Issued by: National Weather Service Seattle, WA Last Update: 236 AM PDT Sun May 31 2026 |  |
| Today: Sunny. Highs in the mid 60s to lower 70s. Northwest wind to 10 mph increasing to 10 to 15 mph in the afternoon. Tonight: Clear. Lows in the lower to mid 40s. Northwest wind 10 to 15 mph becoming north after midnight. Monday: Sunny. Highs in the mid 70s to lower 80s. Light wind becoming northwest to 10 mph in the afternoon. Monday Night: Partly cloudy. Lows in the lower to mid 50s. Northwest wind to 10 mph in the evening becoming light. Tuesday: Sunny. Highs in the 80s. Light wind. Tuesday Night: Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 50s. Wednesday: Mostly cloudy. Highs in the mid 60s to lower 70s. Wednesday Night: Mostly cloudy. Lows in the lower 50s. Thursday: Partly sunny. Highs in the lower to mid 60s. Thursday Night: Partly cloudy. Lows in the upper 40s. Friday: Partly sunny. A slight chance of rain in the afternoon. Highs in the lower to mid 60s. Friday Night: Mostly cloudy with a chance of rain. Lows in the mid to upper 40s. Saturday: Mostly cloudy with a chance of rain in the morning, then mostly cloudy with rain likely in the afternoon. Highs in the lower 60s. | |
| Zone Forecast: Lower Chehalis River Valley | |
Visit your local NWS office at: https://www.weather.gov/sew |