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

Hazardous Weather Conditions

Current conditions at

Greenville (KGNR)

Lat: 45.46°NLon: 69.55°WElev: 1394ft.

70°F

21°C

Humidity 93%
Wind Speed N 3 mph
Barometer 30.11 in (1019.1 mb)
Dewpoint 68°F (20°C)
Visibility NA
Last update 7 Aug 6:56 am EDT
Extended Forecast for

Sebec ME

Heat Advisory August 7, 01:00pm until August 7, 06:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Isolated showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 96. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 92 °F

    Mostly Sunny
    then Isolated
    T-storms

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 9am. Mostly cloudy, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 11am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 84. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 62. West wind around 6 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 84. Light west wind increasing to 5 to 9 mph in the morning.

    High: 84 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers

Detailed Forecast

Today
Isolated showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 96. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 68. Calm wind.
Saturday
A chance of showers and thunderstorms, mainly after 9am. Mostly cloudy, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after 11am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 84. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 62. West wind around 6 mph. Chance of precipitation is 30%.
Monday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 84. Light west wind increasing to 5 to 9 mph in the morning.
Monday Night
A chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Tuesday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Partly cloudy, with a low around 59. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 81. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sebec ME
 45.28°N 69.13°W (Elev. 502 ft)
Last Update:
5:55 am EDT Aug 7, 2026
Forecast Valid:
7am EDT Aug 7, 2026-6pm EDT Aug 13, 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