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

38°F

3°C

Humidity 86%
Wind Speed Calm
Barometer 30.19 in (1022.4 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 15 Oct 11:53 pm EDT
Extended Forecast for

Harpswell ME

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. Calm wind becoming east around 5 mph.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: Rain, mainly after 7am. High near 66. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: Showers, mainly before 8pm. Low around 40. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 53. Northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 53 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. Northwest wind 5 to 10 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. Calm wind becoming east around 5 mph.
Friday
Rain, mainly after 7am. High near 66. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers, mainly before 8pm. Low around 40. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 53. Northwest wind around 15 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 34. Northwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harpswell ME
 43.8°N 69.99°W (Elev. 89 ft)
Last Update:
8:14 pm EDT Oct 15, 2026
Forecast Valid:
12am EDT Oct 16, 2026-6pm EDT Oct 22, 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