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

Hazardous Weather Conditions

Current conditions at

Portland, Portland International Jetport (KPWM)

Lat: 43.64°NLon: 70.3°WElev: 72ft.

Partly Cloudy

62°F

17°C

Humidity 50%
Wind Speed S 9 mph
Barometer 30.17 in (1021.7 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 18 May 4:51 pm EDT
Extended Forecast for

Knightville ME

  • Tonight

    Tonight: Partly cloudy, with a low around 49. Southeast wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 66. Southwest wind 5 to 10 mph.

    Low: 66 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers after 1pm. Mostly sunny, with a high near 87. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. Northwest wind 5 to 10 mph.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 49. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 66. Southwest wind 5 to 10 mph.
Wednesday
A 40 percent chance of showers after 1pm. Mostly sunny, with a high near 87. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 49. Northwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 45.
Friday
Mostly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
A 40 percent chance of showers after 9am. Mostly cloudy, with a high near 59.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 59.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 46.
Memorial Day
A 30 percent chance of showers. Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Knightville ME
 43.64°N 70.24°W (Elev. 16 ft)
Last Update:
3:45 pm EDT May 18, 2026
Forecast Valid:
5pm EDT May 18, 2026-6pm EDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation