| NWS Forecast for: Cowlitz County Lowlands Issued by: National Weather Service Portland, OR Last Update: 501 PM PDT Tue Sep 8 2026 |  |
| Tonight: Mostly clear. Lows in the lower 50s. Winds light. Wednesday: Sunny. Highs in the mid 80s. Winds light. Wednesday Night: Mostly clear in the evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. Winds light. Thursday: Mostly cloudy in the morning, then becoming partly sunny. Patchy fog in the morning. Highs in the mid 70s. West wind 5 to 10 mph. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s. West wind 5 to 10 mph in the evening, becoming light and variable. Friday: Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 60s. Friday Night: Mostly cloudy. Lows in the lower 50s. Saturday: Showers likely with a slight chance of thunderstorms. Highs in the upper 60s. Chance of rain 60 percent. Saturday Night: Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of rain. Lows in the lower 50s. Sunday: Partly sunny. Highs in the lower 70s. Sunday Night: Mostly clear. Lows in the lower 50s. Monday: Mostly sunny. Highs in the mid 70s. Monday Night: Mostly clear. Lows in the lower 50s. Tuesday: Mostly sunny. Highs in the upper 70s. | |
| Zone Forecast: Cowlitz County Lowlands | |
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