Mount Pleasant, Pennsylvania Weather
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Weather Forecast for Mount Pleasant, Pennsylvania : Lebanon County
Issued: 1:05 pm EDT Sep 4, 2025 Latitude: 40.282592 Longitude: -76.529412 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
70% chance of thunderstorms on Tonight Mostly Sunny on Friday 80% chance of thunderstorms on Saturday Mostly Sunny on Sunday Sunny on Monday Sunny on Tuesday Sunny on Wednesday Mostly Sunny on Thursday
Low: 61°F High: 85°F High: 83°F High: 74°F High: 73°F High: 74°F High: 76°F High: 79°F
Low: 65°F Low: 57°F Low: 49°F Low: 48°F Low: 48°F Low: 51°F  
Thunderstorms Mostly Sunny Thunderstorms Mostly Sunny Sunny Sunny Sunny Mostly Sunny
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Current Conditions at
MUIR AAF - (KMUI)
72°
Clear
Shower(S) In Vicinity
as of 6:55 PM EDST
Rel. Humidity: 83%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 1100ft, Scattered at 3500ft, Broken at 9000ft, Broken at 12000ft
Current Conditions at
MIDDLETWN/HARRISB - (KMDT)
72°
Cloudy
as of 6:56 PM EDST
Rel. Humidity: 78%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
10 MPH
140° Southeast
Cloud Level(s): Few at 4000ft, Broken at 7000ft, Solid Overcast at 10000ft
Current Conditions at
LANCASTER - (KLNS)
66°
Mostly Cloudy
Light Rain
as of 6:53 PM EDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 4900ft, Scattered at 7000ft, Broken at 10000ft
Current Conditions at
HARRISBURG - (KCXY)
73°
Mostly Cloudy
as of 6:56 PM EDST
Rel. Humidity: 69%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
9 MPH
180° South
Cloud Level(s): Broken at 10000ft
70% chance of thunderstorms Tonight Tonight... Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 61. Southwest wind 5 to 9 mph becoming light south after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 85. Light southwest wind increasing to 6 to 11 mph in the morning.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 65. South wind 5 to 7 mph.
80% chance of thunderstorms Saturday Saturday... A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 83. Light and variable wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
80% chance of thunderstorms Saturday Night Saturday Night... Showers and thunderstorms before 11pm, then a chance of showers. Low around 57. Northwest wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 74.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 49.
Sunny on Monday Monday... Sunny, with a high near 73.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 48.
Sunny on Tuesday Tuesday... Sunny, with a high near 74.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 48.
Sunny on Wednesday Wednesday... Sunny, with a high near 76.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 51.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 79.
Current Radar Image


Sun Almanac for Mount Pleasant, Pennsylvania
Sunrise: 06:37 AM
Sunset: 7:33 PM
Civil Sunrise:06:09 AM
Civil Sunset: 8:01 PM
Nautical Sunrise: 05:36 AM
Nautical Sunset: 8:34 PM
Astro Sunrise: 05:02 AM
Astro Sunset: 9:08 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.