Weather forecast for: Islesboro ME
Last Update: 6:16 am EDT Aug 1, 2026
Today: Mostly sunny, with a high near 78. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Tonight: Increasing clouds, with a low around 61. South wind around 5 mph becoming calm in the evening.
Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 76. South wind 5 to 10 mph, with gusts as high as 25 mph.
Sunday Night: A 30 percent chance of showers after 3am. Cloudy, with a low around 62. South wind around 5 mph.
Monday: Showers, with thunderstorms also possible after 5pm. High near 74. Southeast wind 5 to 10 mph. Chance of precipitation is 90%.
Monday Night: Showers and thunderstorms likely before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Tuesday: Sunny, with a high near 84.
Tuesday Night: Partly cloudy, with a low around 63.
Wednesday: Mostly sunny, with a high near 81.
Wednesday Night: Mostly cloudy, with a low around 64.
Thursday: Mostly sunny, with a high near 82.
Thursday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Friday: A 30 percent chance of showers. Mostly sunny, with a high near 85.