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Marsh Park, PA Weather Forecast
Marsh Park, PA Weather Forecast Date: 430 PM EDT Mon Aug 17 2026
The area/counties/county of: Northumberland, including the cities of: Sunbury and Shamokin.or toggle through each period.
Tonight... Partly cloudy. Showers likely with a chance of thunderstorms this evening. Lows in the mid 60s. North winds around 5 mph. Chance of rain 70%.
Tuesday... Sunny with highs in the lower 80s. North winds around 5 mph.
Tuesday Night... Mostly clear. Lows in the upper 50s. Northwest winds around 5 mph in the evening, becoming light and variable.
Wednesday... Mostly sunny. Highs in the lower 80s. West winds around 5 mph.
Wednesday Night... Partly cloudy. Humid with lows in the lower 60s. West winds around 5 mph in the evening, becoming light and variable.
Thursday... Partly sunny. A chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 50%.
Thursday Night... Partly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 50%.
Friday... Mostly sunny. Highs in the upper 70s.
Friday Night... Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30%.
Saturday... Partly sunny with a chance of showers. Humid with highs in the upper 70s. Chance of rain 50%.
Saturday Night... Mostly cloudy with a chance of showers. Humid with lows in the lower 60s. Chance of rain 50%.
Sunday... Partly sunny with a chance of showers. Humid with highs in the upper 70s. Chance of rain 50%.
Sunday Night... Partly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 50%.
POP = Probability of Precipitation
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