National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Wiscasset Airport (KIWI)

Lat: 43.96°NLon: 69.71°WElev: 53ft.

Fog/Mist

68°F

20°C

Humidity 90%
Wind Speed Calm
Barometer 29.90 in (1012.5 mb)
Dewpoint 65°F (18°C)
Visibility 3.00 mi
Last update 23 Aug 8:53 am EDT
Extended Forecast for

South Newcastle ME

  • Today

    Today: A 50 percent chance of showers, mainly after 5pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 73. Calm wind becoming southeast around 5 mph in the afternoon. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 73 °F

    Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Monday

    Monday: Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 78. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. South wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
A 50 percent chance of showers, mainly after 5pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 73. Calm wind becoming southeast around 5 mph in the afternoon. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 20%.
Monday
Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 78. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 57. South wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 61.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 78.
Friday Night
Mostly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Newcastle ME
 43.99°N 69.6°W (Elev. 62 ft)
Last Update:
2:36 am EDT Aug 23, 2026
Forecast Valid:
9am EDT Aug 23, 2026-6pm EDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation