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Monroe, OR Weather Forecast
Monroe, OR Weather Forecast Date: 502 PM PDT Fri Sep 04 2026
The area/counties/county of: Benton County Lowlands, including the cities of: Corvallis, Philomath, and Monroe.or toggle through each period.
Tonight... Mostly cloudy. A chance of showers with a slight chance of thunderstorms this evening. Patchy fog after midnight. Lows in the upper 40s. Light and variable winds. Chance of rain 50%. Rainfall amounts around a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday... Patchy fog in the morning. Partly sunny. Highs in the lower 70s. Winds light.
Saturday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. Winds light in the evening, becoming light and variable.
Sunday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers with a slight chance of thunderstorms. Highs in the lower 70s. Light and variable winds, becoming light in the afternoon. Chance of rain 40%.
Sunday Night... Partly cloudy. A slight chance of showers in the evening. Lows in the upper 40s. Winds light. Chance of rain 20%.
Labor Day... Mostly sunny. Highs in the mid 70s.
Monday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s.
Tuesday... Mostly sunny. Highs in the mid 70s.
Tuesday Night... Partly cloudy. Lows in the lower 50s.
Wednesday... Mostly sunny. Highs in the lower 80s.
Wednesday Night... Mostly clear. Lows in the mid 50s.
Thursday... Mostly sunny with a 20% chance of rain. Highs in the upper 70s.
Thursday Night... Partly cloudy with a 30% chance of rain. Lows in the mid 50s.
POP = Probability of Precipitation
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