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

50°F

10°C

Humidity 83%
Wind Speed Calm
Barometer 30.22 in (1023.4 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 19 Sep 8:53 pm EDT
Extended Forecast for

Montsweag ME

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 61. Light southeast wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Partly Sunny
    then Rain
    Likely

  • Sunday Night

    Sunday Night: Rain likely, mainly before 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 45. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Rain Likely
    and Patchy
    Fog

  • Monday

    Monday: Sunny, with a high near 69. North wind 5 to 10 mph.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. North wind around 5 mph becoming calm in the evening.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. Calm wind.
Sunday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 61. Light southeast wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain likely, mainly before 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 45. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 69. North wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 43. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 65.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 46.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 66. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Montsweag ME
 43.96°N 69.7°W (Elev. 98 ft)
Last Update:
6:50 pm EDT Sep 19, 2026
Forecast Valid:
9pm EDT Sep 19, 2026-6pm EDT Sep 26, 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