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Town of Islesboro, MaineIslesboro, ME 7-Day Weather Forecast
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Islesboro Weather Forecast
Islesboro, ME Weather Forecast Date: 801 AM EDT Fri Aug 07 2026
Weather forecast for Islesboro, ME
Tonight Lo: 69°F Lo: 21°C |
Tonight... Partly cloudy. Patchy fog. Lows in the upper 60s. Light and variable winds. |
Fri Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Friday... Partly sunny. Areas of fog in the morning. A slight chance of showers with isolated thunderstorms in the afternoon. Warm with highs in the upper 80s. Light and variable winds. Chance of rain 20%. Heat index values in the upper 90s in the afternoon. |
| Sat Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Saturday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. Scattered thunderstorms in the afternoon. Humid with highs in the lower 80s. Light and variable winds. Chance of rain 40%. |
Sun Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Sunday... Partly sunny. A chance of showers in the afternoon. Warm with highs in the mid 80s. Chance of rain 30%. |
Mon Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Monday... Mostly sunny. Warm with highs in the mid 80s. |
| Tue Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Tuesday... Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 40%. |
| Wed Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Wednesday... Mostly sunny. Highs in the lower 80s. |
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