Weather forecast for: Monongahela PA
Last Update: 12:41 pm EDT Sep 30, 2026
This Afternoon: Partly sunny, with a high near 77. Calm wind becoming southwest around 6 mph.
Tonight: Mostly cloudy, with a low around 62. Light south wind.
Thursday: Mostly sunny, with a high near 83. Southwest wind 6 to 11 mph.
Thursday Night: Mostly cloudy, with a low around 67. South wind 7 to 9 mph, with gusts as high as 20 mph.
Friday: Showers, mainly after 2pm. High near 78. Southwest wind 10 to 14 mph becoming west in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night: Showers before 8pm. Low around 48. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday: Sunny, with a high near 69.
Saturday Night: Partly cloudy, with a low around 50.
Sunday: Partly sunny, with a high near 72.
Sunday Night: Partly cloudy, with a low around 51.
Monday: Mostly sunny, with a high near 66.
Monday Night: Mostly clear, with a low around 41.
Tuesday: Sunny, with a high near 62.