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.

Overcast

71°F

22°C

Humidity 87%
Wind Speed SE 3 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 28 Aug 4:53 am EDT
Extended Forecast for

Newcastle ME

  • Today

    Today: A slight chance of showers between 9am and 11am, then a slight chance of showers and thunderstorms after 11am. Patchy fog before 2pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. South wind around 5 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 55. Calm wind becoming north around 5 mph.

    Low: 55 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 81. North wind around 5 mph becoming west in the afternoon.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers between 10pm and 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

Detailed Forecast

Today
A slight chance of showers between 9am and 11am, then a slight chance of showers and thunderstorms after 11am. Patchy fog before 2pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. South wind around 5 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 55. Calm wind becoming north around 5 mph.
Saturday
Sunny, with a high near 81. North wind around 5 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
A chance of showers between 10pm and 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Monday
Sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 74.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 56.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 75.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle ME
 44.03°N 69.53°W (Elev. 0 ft)
Last Update:
2:24 am EDT Aug 28, 2026
Forecast Valid:
5am EDT Aug 28, 2026-6pm EDT Sep 3, 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