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

Hazardous Weather Conditions

Current conditions at

Wiscasset Airport (KIWI)

Lat: 43.96°NLon: 69.71°WElev: 53ft.

Mostly Cloudy

73°F

23°C

Humidity 87%
Wind Speed Calm
Barometer 30.07 in (1018.3 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 7 Aug 5:53 am EDT
Extended Forecast for

Westport Island ME

Heat Advisory August 7, 11:00am until August 7, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 68. Calm wind.

    Low: 68 °F

    Patchy Fog

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 78. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 68. Calm wind.
Saturday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 78. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 67. Calm wind.
Sunday
Mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 77.
Tuesday Night
A 30 percent chance of showers before 10pm. Mostly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westport Island ME
 43.88°N 69.73°W (Elev. 3 ft)
Last Update:
2:44 am EDT Aug 7, 2026
Forecast Valid:
7am EDT Aug 7, 2026-6pm EDT Aug 13, 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