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

Clayton Lake (K40B)

Lat: 46.62°NLon: 69.53°WElev: 1030ft.

73°F

23°C

Humidity 34%
Wind Speed Calm
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 1 Sep 5:20 pm EDT
Extended Forecast for

Allagash State Wilderness Waterway ME

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 5am. Mostly cloudy, with a low around 49. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain, mainly after 7am. Patchy fog before 9am. High near 62. Southeast wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain before 2am, then a chance of showers, mainly between 2am and 4am. Low around 55. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Rain then
    Chance Rain

  • Friday

    Friday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 66. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 47. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 67. Chance of precipitation is 40%.

    High: 67 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Mostly cloudy, with a low around 42. Chance of precipitation is 30%.

    Low: 42 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. Calm wind.
Wednesday
Mostly sunny, with a high near 74. Calm wind becoming southeast 5 to 7 mph in the morning.
Wednesday Night
A chance of rain, mainly after 5am. Mostly cloudy, with a low around 49. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Thursday
Rain, mainly after 7am. Patchy fog before 9am. High near 62. Southeast wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain before 2am, then a chance of showers, mainly between 2am and 4am. Low around 55. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 66. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 47. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 67. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Mostly cloudy, with a low around 42. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 42.
Labor Day
Mostly sunny, with a high near 74.
Monday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 30%.
Tuesday
A slight chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Allagash State Wilderness Waterway ME
 46.45°N 69.34°W (Elev. 1070 ft)
Last Update:
4:02 pm EDT Sep 1, 2026
Forecast Valid:
5pm EDT Sep 1, 2026-6pm EDT Sep 8, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation