| NWS Forecast for: Lower Columbia River Issued by: National Weather Service Portland, OR Last Update: 1128 PM PDT Sun Sep 6 2026 |  |
| Overnight: Partly cloudy late this evening, then becoming mostly cloudy. Lows in the mid 50s. Winds light. Labor Day: Patchy fog in the morning. Partly sunny. Highs around 70. Light and variable winds, becoming light in the afternoon. Monday Night: Mostly clear. Lows in the lower 50s. Winds light. Tuesday: Sunny. Highs in the upper 70s. Winds light. Tuesday Night: Clear. Lows in the mid 50s. North wind 5 to 10 mph. Wednesday: Sunny. Highs in the upper 80s. Wednesday Night: Mostly clear. Lows in the upper 50s. Thursday: Mostly sunny. Highs in the upper 70s. Thursday Night: Partly cloudy. Lows in the lower 50s. Friday: Partly sunny. Highs around 70. Friday Night: Partly cloudy. Lows in the lower 50s. Saturday: Partly sunny with a 20 percent chance of rain. Highs around 70. Saturday Night: Partly cloudy. Lows in the lower 50s. Sunday: Mostly sunny. Highs in the mid 70s. | |
| Zone Forecast: Lower Columbia River | |
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