| NWS Forecast for: Cowlitz County Lowlands Issued by: National Weather Service Portland, OR Last Update: 501 AM PDT Wed Jul 15 2026 |  |
| Today: Sunny. Highs in the upper 80s. Northwest wind 5 to 10 mph. Tonight: Mostly clear in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 50s. Northwest wind 5 to 10 mph. Chance of rain 50 percent. Rainfall amounts less than a tenth of an inch, except higher amounts possible in thunderstorms. Thursday: A slight chance of thunderstorms. Showers likely, mainly in the morning. Highs in the mid 70s. Winds light. Chance of rain 70 percent. Rainfall amounts a tenth to a quarter of an inch, except higher amounts possible in thunderstorms. Thursday Night: Partly cloudy. Lows in the lower 50s. Winds light. Friday: Partly sunny in the morning, then clearing. Highs in the upper 70s. Light and variable winds, becoming light in the afternoon. Friday Night: Mostly clear. Lows in the lower 50s. Saturday: Sunny. Highs in the lower 80s. Saturday Night: Clear. Lows in the mid 50s. Sunday: Sunny. Highs around 90. Sunday Night: Mostly clear. Lows in the upper 50s. Monday: Mostly sunny. Highs in the lower 90s. Monday Night: Partly cloudy. Lows around 60. Tuesday: Mostly sunny. Highs around 90. | |
| Zone Forecast: Cowlitz County Lowlands | |
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