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Birch Harbor, ME Weather Forecast for 5-Days

Updated: Mon Mar 9th 2026 2:15 AM EDT

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Birch Harbor, ME Weather – 3-9 – Sunny
46° / 35°
Sunny
Birch Harbor may see a sunny day, with daytime highs of 46°F and overnight lows near 35°F. Wind will be moderate, blowing around 13mph on average and gusts of 25.3mph at 11 PM. The humidity will be on the higher side, averaging about 79%, the maximum being 88% at 10 PM and 70% being its lowest at 4 PM. Barometric pressure is its highest of 29.92inHg at 8 AM, a lowest point of 29.8inHg at 5 PM with an avg 29.85inHg.
Birch Harbor, ME Weather – 3-10 – Mist
39° / 36°

Weather Tomorrow

Mist
Birch Harbor may see mist, with daytime highs of 39°F and overnight lows near 36°F. Wind will be moderate, blowing around 13mph on average and gusts of 25.2mph at 12 AM. High humidity with average of 96% is anticipated, the maximum being 98% at 10 PM and 89% being its lowest at 11 PM. Barometric pressure is its highest of 30.06inHg at 10 PM, a lowest point of 29.82inHg at 12 AM with an avg 29.95inHg.
Birch Harbor, ME Weather – 3-11 – Moderate Rain
39° / 35°
Moderate Rain
Periods of rain are likely in Birch Harbor, with a high of 39°F and a low of 35°F. The chance of rain is 88% with an estimated 0.45in. Wind will be moderate, blowing around 18mph on average and gusts of 23.8mph at 10 AM. High humidity with average of 95% is anticipated, the maximum being 99% at 10 PM and 88% being its lowest at 5 AM. Barometric pressure is its highest of 30.16inHg at 3 AM, a lowest point of 29.82inHg at 10 PM with an avg 30.02inHg.
Birch Harbor, ME Weather – 3-12 – Scattered Showers
48° / 30°
Scattered Showers
In Birch Harbor, showers likely at times with highs near 48°F and lows around 30°F. The chance of rain is 87% with an estimated 0.09in. Snow is likely with a 8% chance. Winds will be strong at speeds peaking at 27mph and gusts of 49.2mph at 8 PM. High humidity with average of 97% is anticipated, the maximum being 99% at 1 AM and 88% being its lowest at 11 PM. Barometric pressure is its highest of 30.01inHg at 12 AM, a lowest point of 29.25inHg at 11 PM with an avg 29.55inHg.
Birch Harbor, ME Weather – 3-13 – Light Freezing Rain
37° / 27°
Light Freezing Rain
It will rain at times in Birch Harbor, with a high of 37°F and a low of 27°F. The chance of rain is 77% with an estimated 0.01in. Snow is likely with a 11% chance with an estimated 0in. Winds will be strong at speeds peaking at 21mph and gusts of 29.5mph at 11 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 90% at 2 AM and 37% being its lowest at 2 PM. Barometric pressure is its highest of 29.91inHg at 9 PM, a lowest point of 29.3inHg at 12 AM with an avg 29.71inHg.
Birch Harbor, ME Weather – 3-14 – Partly Cloudy
48° / 35°
Partly Cloudy
In Birch Harbor, it will be cloudy with highs near 48°F and lows around 35°F. Winds will be strong at speeds peaking at 23mph and gusts of 34.5mph at 2 AM. The humidity will be on the higher side, averaging about 69%, the maximum being 82% at 12 AM and 49% being its lowest at 5 PM. Barometric pressure is its highest of 30.18inHg at 11 PM, a lowest point of 29.79inHg at 5 AM with an avg 29.9inHg.

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