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

Dangerous Heat in the Central and Eastern U.S.; Critical Fire Weather in the Great Basin and Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue Tuesday across portions of the Four Corners and Great Basin, as dry conditions and gusty winds persist. Read More >

Current conditions at

Bar Harbor, Hancock County-Bar Harbor Airport (KBHB)

Lat: 44.45°NLon: 68.37°WElev: 82ft.

Fair

58°F

14°C

Humidity 97%
Wind Speed Calm
Barometer 30.10 in (1019.4 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 30 Jun 1:56 am EDT
Extended Forecast for

Deer Isle ME

  • Overnight

    Overnight: Partly cloudy, with a low around 59. Light southwest wind.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 72. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 72 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Patchy fog after 1am. Otherwise, increasing clouds, with a low around 60. South wind 6 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Slight Chance
    T-storms then
    Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of thunderstorms before 8am. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 74. Southwest wind around 9 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    T-storms and
    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 9pm. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 63. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers between 3pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 67. West wind 3 to 7 mph.

    Low: 67 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 59. Light southwest wind.
Tuesday
Partly sunny, with a high near 72. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Patchy fog after 1am. Otherwise, increasing clouds, with a low around 60. South wind 6 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of thunderstorms before 8am. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 74. Southwest wind around 9 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers after 9pm. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 63. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.
Thursday
A slight chance of showers between 3pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Thursday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 67. West wind 3 to 7 mph.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 65.
Independence Day
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 60.
Monday
A slight chance of showers. Mostly sunny, with a high near 75. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Deer Isle ME
 44.24°N 68.68°W (Elev. 39 ft)
Last Update:
2:29 am EDT Jun 30, 2026
Forecast Valid:
2am EDT Jun 30, 2026-6pm EDT Jul 6, 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