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Mercersburg, PA
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7-Day Forecast
Tonight
Mostly Cloudy then Chance Showers
Low: 61°
A chance of showers after 4am.
Mostly cloudy with a low around 61.
South wind 5 to 7 mph.
Chance of precipitation is 30%.
New precipitation amounts of less than a tenth of an inch possible.
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Monday
Chance Showers then Severe Thunderstorms
High: 77°
A chance of showers and thunderstorms,
then showers and possibly a thunderstorm after 3pm.
Some of the storms could be severe.
High near 77.
South wind 7 to 13 mph
with gusts as high as 23 mph.
Chance of precipitation is 80%.
New rainfall amounts
between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
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Monday Night
Showers then Mostly Cloudy
Low: 38°
Showers and possibly a thunderstorm before 10pm,
then a slight chance of showers
between 10pm and 11pm.
Low around 38.
Northwest wind 8 to 13 mph
with gusts as high as 23 mph.
Chance of precipitation is 80%.
New precipitation amounts
between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
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Tuesday
Sunny
High: 58°
Sunny with a high near 58.
Northwest wind 8 to 11 mph
with gusts as high as 23 mph.
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Tuesday Night
Mostly Clear
Low: 35°
Mostly clear with a low around 35.
Calm wind.
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Wednesday
Partly Sunny then Slight Chance Showers
High: 59°
A slight chance of showers after 2pm.
Partly sunny with a high near 59.
Chance of precipitation is 20%.
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Wednesday Night
Mostly Cloudy
Low: 52°
Mostly cloudy with a low around 52.
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Thursday
Showers Likely
High: 79°
Showers likely, mainly after 2pm.
Mostly cloudy with a high near 79.
Chance of precipitation is 60%.
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Thursday Night
Showers Likely
Low: 60°
Showers likely, mainly after 2am.
Mostly cloudy with a low around 60.
Chance of precipitation is 70%.
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Friday
Showers Likely
High: 73°
Showers likely, mainly before 8am.
Mostly cloudy with a high near 73.
Chance of precipitation is 60%.
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Friday Night
Mostly Cloudy then Chance Showers
Low: 48°
A chance of showers.
Mostly cloudy with a low around 48.
Chance of precipitation is 50%.
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Saturday
Showers Likely
High: 59°
Showers likely.
Mostly cloudy with a high near 59.
Chance of precipitation is 70%.
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Saturday Night
Chance Showers
Low: 45°
A chance of showers.
Mostly cloudy with a low around 45.
Chance of precipitation is 50%.
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Sunday
Chance Showers
High: 60°
A chance of showers.
Mostly cloudy with a high near 60.
Chance of precipitation is 40%.
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Source: National Weather Service
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