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.

Mostly Cloudy

77°F

25°C

Humidity 47%
Wind Speed W 9 mph
Barometer 29.48 in (998.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Jun 3:53 pm EDT
Extended Forecast for

South Bristol ME

  • Tonight

    Tonight: Increasing clouds, with a low around 59. West wind around 10 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of showers after 11am. Partly sunny, with a high near 77. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 77 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 3pm. Mostly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of rain after 2pm. Partly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain likely before 8pm, then showers, mainly after 8pm. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before 8am. Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. West wind around 10 mph, with gusts as high as 25 mph.
Saturday
A 20 percent chance of showers after 11am. Partly sunny, with a high near 77. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm.
Sunday
A 30 percent chance of showers after 3pm. Mostly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 56. Calm wind.
Monday
A 40 percent chance of rain after 2pm. Partly sunny, with a high near 75.
Monday Night
Rain likely before 8pm, then showers, mainly after 8pm. Low around 57. Chance of precipitation is 80%.
Tuesday
Showers likely, mainly before 8am. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 57.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Bristol ME
 43.86°N 69.58°W (Elev. 98 ft)
Last Update:
2:17 pm EDT Jun 19, 2026
Forecast Valid:
5pm EDT Jun 19, 2026-6pm EDT Jun 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