| NWS Forecast for: Cowlitz County Lowlands Issued by: National Weather Service Portland, OR Last Update: 1128 PM PDT Tue May 19 2026 | |
| Overnight: Mostly cloudy. Patchy fog. Lows in the upper 40s. Winds light. Wednesday: Partly sunny. Highs in the lower 70s. North wind 5 to 10 mph. Wednesday Night: Partly cloudy in the evening, then clearing. Lows in the upper 40s. Northwest wind 5 to 10 mph. Thursday: Sunny. Highs in the lower 80s. Winds light. Thursday Night: Mostly clear. Lows around 50. Northwest wind 5 to 10 mph. Friday: Sunny. Highs in the upper 70s. Friday Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 50. Saturday: Partly sunny in the morning, then clearing. Highs in the upper 70s. Saturday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. Sunday: Partly sunny. Highs in the mid 70s. Sunday Night: Mostly cloudy with a 20 percent chance of rain. Lows in the upper 40s. Memorial Day: Rain likely. Highs in the lower 60s. Chance of rain 70 percent. Monday Night: Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. Tuesday: Partly sunny with a 40 percent chance of rain. Highs in the mid 60s. | |
| Zone Forecast: Cowlitz County Lowlands | |
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