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

63°F

17°C

Humidity 78%
Wind Speed Calm
Barometer 29.97 in (1015.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 20 Jul 11:53 pm EDT
Extended Forecast for

Topsham ME

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. South wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 74. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 74 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms, mainly before 3am, then a chance of thunderstorms after 5am. Low around 60. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 60 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 79. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 59. South wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. South wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 74. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers and thunderstorms, mainly before 3am, then a chance of thunderstorms after 5am. Low around 60. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A chance of showers between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 79. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 59. South wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 60.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Topsham ME
 43.93°N 69.95°W (Elev. 39 ft)
Last Update:
6:41 pm EDT Jul 20, 2026
Forecast Valid:
12am EDT Jul 21, 2026-6pm EDT Jul 27, 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