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.

Fair

80°F

27°C

Humidity 45%
Wind Speed SW 7 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 Aug 4:53 pm EDT
Extended Forecast for

3 Miles ESE South Newcastle ME

  • Tonight

    Tonight: Mostly clear, with a low around 57. Southwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 59. Southwest wind around 5 mph becoming calm.

    Low: 59 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 64. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 4pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 59. Southwest wind around 5 mph becoming calm.
Thursday
Partly sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 64. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Showers likely, mainly after 4pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 81.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 60.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Newcastle ME
 43.99°N 69.57°W (Elev. 200 ft)
Last Update:
2:15 pm EDT Aug 25, 2026
Forecast Valid:
5pm EDT Aug 25, 2026-6pm EDT Sep 1, 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