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.

Overcast

70°F

21°C

Humidity 64%
Wind Speed Calm
Barometer 30.11 in (1019.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 21 Aug 10:53 pm EDT
Extended Forecast for

South Bristol ME

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers likely, mainly after 4pm. Mostly cloudy, with a high near 74. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 74 °F

    Partly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely before 3am, then a slight chance of showers after 5am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 60. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers likely, mainly between 10am and 2pm. Areas of fog. Otherwise, mostly cloudy, with a high near 74. Southeast wind around 5 mph. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely and
    Areas Fog

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 8pm. Patchy fog. Otherwise, mostly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm.

    Low: 64 °F

    Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. Calm wind.
Saturday
Showers likely, mainly after 4pm. Mostly cloudy, with a high near 74. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Showers likely before 3am, then a slight chance of showers after 5am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 60. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers likely, mainly between 10am and 2pm. Areas of fog. Otherwise, mostly cloudy, with a high near 74. Southeast wind around 5 mph. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers before 8pm. Patchy fog. Otherwise, mostly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Bristol ME
 43.86°N 69.58°W (Elev. 98 ft)
Last Update:
7:55 pm EDT Aug 21, 2026
Forecast Valid:
11pm EDT Aug 21, 2026-6pm EDT Aug 28, 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