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Upper Castanea Reservoir, PA 7-Day Night Weather Forecast
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Upper Castanea Reservoir, PA Weather Forecast
Upper Castanea Reservoir, PA Weather Forecast Date: 1030 PM EDT Thu Aug 20 2026
The area/counties/county of: Southern Clinton, including the city of Lock Haven.or toggle through each period.
Overnight... Partly cloudy. Patchy fog. Lows in the mid 50s. North winds around 5 mph.
Friday... Patchy fog in the morning. Sunny, warmer with highs in the upper 70s. Northeast winds around 5 mph.
Friday Night... Mostly clear in the evening, then partly cloudy with a chance of showers after midnight. Patchy fog after midnight. Lows in the upper 50s. Light and variable winds, becoming east around 5 mph after midnight. Chance of rain 40%.
Saturday... Mostly cloudy. Patchy fog in the morning. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the mid 70s. Southeast winds around 5 mph. Chance of rain 70%.
Saturday Night... Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Patchy fog. Humid with lows around 60. Southeast winds around 5 mph. Chance of rain 70%.
Sunday... Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30%.
Sunday Night... Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 50s. Chance of rain 30%.
Monday... Mostly sunny. Highs in the lower 70s.
Monday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.
Tuesday... Mostly sunny. Highs in the mid 70s.
Tuesday Night... Partly cloudy. Lows in the mid 50s.
Wednesday... Mostly sunny. Highs in the upper 70s.
Wednesday Night... Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Lows in the lower 60s. Chance of rain 30%.
POP = Probability of Precipitation
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