Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Dangerous and extreme heat will remain across portions of the Central U.S. this week, persisting across the Mid to Lower Mississippi Valleys, Gulf Coast, Southern Plains and portions of Texas. A heat wave over the Southwest will intensify late this week. Severe thunderstorms and flash flooding will spread from the Great Lakes/Ohio Valley to the Mid-Atlantic and Northeast the next few days. Read More >

Current conditions at

Clayton Lake (K40B)

Lat: 46.62°NLon: 69.53°WElev: 1030ft.

60°F

16°C

Humidity 91%
Wind Speed Calm
Barometer NA
Dewpoint 58°F (14°C)
Visibility NA
Last update 28 Jul 3:20 am EDT
Extended Forecast for

8 Miles ENE Allagash State Wilderness Waterway ME

  • Overnight

    Overnight: Mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 54. Light south wind.

    Low: 54 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 78. Southeast wind 3 to 6 mph.

    High: 78 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 9pm.  Mostly cloudy, with a low around 55. Light east wind.  Chance of precipitation is 40%.

    Low: 55 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 73. East wind around 6 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A chance of showers, mainly before 5am.  Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 53. Light northeast wind.  Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A slight chance of showers before 11am, then a slight chance of showers after 2pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 77. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 55. Calm wind.
Tuesday
Mostly sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 54. Light south wind.
Wednesday
Partly sunny, with a high near 78. Southeast wind 3 to 6 mph.
Wednesday Night
A chance of rain, mainly after 9pm. Mostly cloudy, with a low around 55. Light east wind. Chance of precipitation is 40%.
Thursday
Rain likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73. East wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers, mainly before 5am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 53. Light northeast wind. Chance of precipitation is 40%.
Friday
A slight chance of showers before 11am, then a slight chance of showers after 2pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 77. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ENE Allagash State Wilderness Waterway ME
 46.5°N 69.17°W (Elev. 1398 ft)
2:30 am EDT Jul 28, 2026
3am EDT Jul 28, 2026-6pm EDT Aug 3, 2026
 
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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