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

Portland, Portland International Jetport (KPWM)

Lat: 43.64°NLon: 70.3°WElev: 72ft.

A Few Clouds

71°F

22°C

Humidity 39%
Wind Speed N 14 G 22 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 18 Sep 5:51 pm EDT
Extended Forecast for

Knightville ME

  • Tonight

    Tonight: Increasing clouds, with a low around 49. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 64. North wind around 5 mph becoming southeast in the afternoon.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 50. South wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 40 percent chance of showers after noon. Mostly cloudy, with a high near 65. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 65 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 51. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 49. North wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 64. North wind around 5 mph becoming southeast in the afternoon.
Saturday Night
Increasing clouds, with a low around 50. South wind around 5 mph becoming calm in the evening.
Sunday
A 40 percent chance of showers after noon. Mostly cloudy, with a high near 65. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 51. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 61.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 49.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Knightville ME
 43.64°N 70.24°W (Elev. 16 ft)
Last Update:
2:20 pm EDT Sep 18, 2026
Forecast Valid:
6pm EDT Sep 18, 2026-6pm EDT Sep 25, 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