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.

69°F

21°C

Humidity 56%
Wind Speed S 8 mph
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 16 Aug 5:20 pm EDT
Extended Forecast for

3 Miles NE Allagash State Wilderness Waterway ME

  • Tonight

    Tonight: Rain before 4am, then rain and possibly a thunderstorm between 4am and 5am, then rain after 5am. Areas of smoke before 8pm. Low around 57. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain and possibly a thunderstorm before noon, then showers and possibly a thunderstorm, mainly after noon. High near 68. South wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers

  • Monday Night

    Monday Night: Showers likely, mainly before 7pm. Patchy fog. Otherwise, mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 59 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers between noon and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 76. Calm wind. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 76. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 3am. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 73. Chance of precipitation is 30%.

    High: 73 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Partly cloudy, with a low around 46. Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
Rain before 4am, then rain and possibly a thunderstorm between 4am and 5am, then rain after 5am. Areas of smoke before 8pm. Low around 57. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Rain and possibly a thunderstorm before noon, then showers and possibly a thunderstorm, mainly after noon. High near 68. South wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers likely, mainly before 7pm. Patchy fog. Otherwise, mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A slight chance of showers between noon and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 76. Calm wind. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 20%.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 76. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 3am. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 20%.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 73. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Partly cloudy, with a low around 46. Chance of precipitation is 20%.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Allagash State Wilderness Waterway ME
 46.47°N 69.27°W (Elev. 919 ft)
Last Update:
4:02 pm EDT Aug 16, 2026
Forecast Valid:
5pm EDT Aug 16, 2026-6pm EDT Aug 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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