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Cowlitz County, WA Weather Forecast
Cowlitz County, WA Weather Forecast Date: 201 AM PDT Sat Sep 26 2026
The area/counties/county of: South Washington Cascade Foothills, including the cities of: Yacolt, Amboy, Lake Merwin, and Toutle.or toggle through each period.
Rest of Tonight... Mostly cloudy. Patchy fog. Lows in the mid 40s. Light and variable winds.
Saturday... Patchy fog in the morning. Mostly sunny. Highs in the mid 60s. Winds light.
Saturday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 40s. Northeast wind 5 to 10 mph.
Sunday... Sunny. Highs in the upper 60s. Northeast wind 5 to 10 mph, becoming light in the afternoon.
Sunday Night... Mostly clear. Lows in the mid 40s. Winds light.
Monday... Mostly sunny. Highs in the mid 60s.
Monday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s.
Tuesday... Mostly cloudy with a 50% chance of rain. Highs in the lower 60s.
Tuesday Night... Mostly cloudy with a 50% chance of rain. Lows in the upper 40s.
Wednesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 60s.
Wednesday Night... Partly cloudy. Lows in the upper 40s.
Thursday... Partly sunny with a 20% chance of rain. Highs in the lower 60s.
Thursday Night... Partly cloudy with a 20% chance of rain. Lows in the mid 40s.
POP = Probability of Precipitation
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