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

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

Lat: 44.45°NLon: 68.37°WElev: 82ft.

Fair

52°F

11°C

Humidity 100%
Wind Speed Calm
Barometer 29.86 in (1011.2 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 18 Jun 1:56 am EDT
Extended Forecast for

Waltham ME

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 50. Light south wind.

    Low: 50 °F

    Patchy Fog

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 5pm. Patchy fog before 8am. High near 64. South wind 7 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Scattered
    Showers and
    Patchy Fog
    then Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers between midnight and 1am. Patchy fog. Low around 54. Breezy, with a southeast wind 15 to 20 mph becoming south 7 to 12 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Showers and
    Patchy Fog
    then Chance
    Showers and
    Areas Fog

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 78. Southwest wind 11 to 14 mph, with gusts as high as 26 mph.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. West wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 74. Northwest wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. Northwest wind 6 to 9 mph.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 50. Light south wind.
Thursday
Showers likely, then showers and possibly a thunderstorm after 5pm. Patchy fog before 8am. High near 64. South wind 7 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers between midnight and 1am. Patchy fog. Low around 54. Breezy, with a southeast wind 15 to 20 mph becoming south 7 to 12 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Juneteenth
Mostly sunny, with a high near 78. Southwest wind 11 to 14 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 57. West wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 74. Northwest wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 54. Northwest wind 6 to 9 mph.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Monday
A chance of showers, mainly after 11am. Partly sunny, with a high near 73. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.
Tuesday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 50%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 55. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Sunny, with a high near 79. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltham ME
 44.71°N 68.34°W (Elev. 374 ft)
Last Update:
9:28 pm EDT Jun 17, 2026
Forecast Valid:
2am EDT Jun 18, 2026-6pm EDT Jun 24, 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