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Flat Trail, PA Weather Forecast
Flat Trail, PA Weather Forecast Date: 1200 AM EDT Sun Sep 13 2026
The area/counties/county of: Mifflin, including the city of Lewistown.or toggle through each period.
Rest of Tonight... Showers with a chance of thunderstorms. Patchy fog. Lows in the mid 60s. Southeast winds around 5 mph. Chance of rain near 100%.
Sunday... Patchy fog in the morning. Mostly cloudy with a chance of showers in the morning, then mostly sunny in the afternoon. Very warm. Humid with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 50%.
Sunday Night... Mostly cloudy. A chance of showers after midnight. Humid with lows in the upper 50s. West winds 5 to 10 mph. Chance of rain 40%.
Monday... Sunny. Not as warm. Less humid with highs in the lower 70s. Northwest winds 5 to 10 mph.
Monday Night... Mostly clear. Cooler with lows in the upper 40s. Northeast winds around 5 mph.
Tuesday... Sunny. Highs in the mid 70s.
Tuesday Night... Mostly clear. Lows in the mid 50s.
Wednesday... Mostly sunny. Highs in the lower 80s.
Wednesday Night... Partly cloudy. Lows in the lower 60s.
Thursday... Mostly sunny. A chance of showers in the afternoon. Humid. Very warm with highs in the mid 80s. Chance of rain 40%.
Thursday Night... Mostly cloudy with a chance of showers. Humid with lows in the lower 60s. Chance of rain 40%.
Friday... Partly sunny with a 40% chance of showers. Humid with highs in the upper 70s.
Friday Night... Mostly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 40%.
POP = Probability of Precipitation
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