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City of Monongahela, PAMonongahela, PA 7-Day Night Weather Forecast
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Monongahela, PA Weather Forecast
Monongahela, PA Weather Forecast Date: 802 PM EDT Fri Oct 02 2026
The area/counties/county of: Washington, including the cities of: Washington and Canonsburg.or toggle through each period.
Rest of Tonight... Mostly cloudy. Lows in the upper 40s. North winds 5 to 10 mph.
Saturday... Sunny. Highs in the upper 60s. Northeast winds 5 to 10 mph.
Saturday Night... Clear in the evening, then becoming mostly cloudy. Mild. Lows in the mid 50s. East winds around 5 mph.
Sunday... Mostly cloudy. Highs around 70. Southeast winds around 5 mph, becoming southwest around 5 mph in the afternoon.
Sunday Night... Partly cloudy. Lows around 50. West winds around 5 mph.
Monday... Mostly sunny. Highs in the mid 60s.
Monday Night... Clear. Lows around 40.
Tuesday... Sunny. Highs in the lower 60s.
Tuesday Night... Clear. Lows around 40.
Wednesday... Sunny. Highs in the upper 60s.
Wednesday Night... Mainly clear. Lows in the upper 40s.
Thursday... Mostly sunny. Highs around 70.
Thursday Night... Mainly clear. Lows in the upper 40s.
POP = Probability of Precipitation
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