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Allagash, ME Weather Forecast
Allagash, ME Weather Forecast Dated: 525 AM Fri Sep 18 2026
Expect a cool pattern with more clouds than sun and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, September 18, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
51°F 11°C
Sunny
Early-Evening
41°F 5°C
Sunny
Brisk around 51°F 11°C, sunny throughout the day, with steady humidity and barometric pressure rising. Winds turning from the WNW to the NW at 14 mph 23 km/h. Gusts up to 32 mph 51 km/h.
Saturday, September 19, 2026
Mid-Morning
38°F 3°C
Sunny
Mid-Afternoon
48°F 9°C
Sunny
Early-Evening
46°F 8°C
Sunny
Cool and brisk at 48°F 9°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the NNW to the SSE at 3 mph 5 km/h.
Sunday, September 20, 2026
Mid-Morning
43°F 6°C
Cloudy
Mid-Afternoon
56°F 13°C
Overcast
Early-Evening
53°F 12°C
Overcast
Chilly near 56°F 13°C, overcast throughout the day, with increasing humidity and barometric pressure falling. Winds moving from the S to the WSW at 4 mph 6 km/h.
Monday, September 21, 2026
Mid-Morning
42°F 6°C
Partly Cloudy
Mid-Afternoon
46°F 8°C
Overcast
Early-Evening
40°F 5°C
Overcast
Crisp with a high near 46°F 8°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure rising. Winds swinging from the NNW to the WNW at 6 mph 10 km/h.
Tuesday, September 22, 2026
Mid-Morning
39°F 4°C
Partly Cloudy
Mid-Afternoon
50°F 10°C
Sunny
Early-Evening
46°F 8°C
Sunny
Brisk around 50°F 10°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
52°F 11°C
Sunny
Mildly cool near 59°F 15°C, sunny throughout the day, with steady humidity and barometric pressure falling.
Thursday, September 24, 2026
Mid-Morning
52°F 11°C
Overcast
Mid-Afternoon
58°F 15°C
Overcast
Early-Evening
53°F 12°C
Overcast
Comfortable at 58°F 15°C, overcast throughout the day, with steady humidity and barometric pressure falling.
Friday, September 25, 2026
Mid-Morning
44°F 7°C
Light Showers
Mid-Afternoon
42°F 6°C
Light Showers
Early-Evening
40°F 5°C
Light Showers
Biting cold near 42°F 6°C, persistent showers off and on through the day, with increasing humidity and barometric pressure falling.
Saturday, September 26, 2026
Mid-Morning
40°F 5°C
Scattered Showers
Mid-Afternoon
46°F 8°C
Cloudy
Early-Evening
45°F 7°C
Overcast
Brisk around 46°F 8°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds shifting from the W to the WNW at 12 mph 19 km/h. Gusts up to 27 mph 43 km/h.
Sunday, September 27, 2026
Mid-Morning
42°F 6°C
Scattered Showers
Mid-Afternoon
49°F 9°C
Partly Cloudy
Early-Evening
46°F 8°C
Scattered Showers
Cool and brisk at 49°F 9°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds WNW at 11 mph 17 km/h. Gusts up to 20 mph 33 km/h.
Monday, September 28, 2026
Mid-Morning
47°F 9°C
Overcast
Mid-Afternoon
58°F 14°C
Scattered Showers
Early-Evening
54°F 13°C
Overcast
Comfortable at 58°F 14°C, scattered downpours possible, with steady humidity and steady pressure. Winds out of the WSW at 14 mph 23 km/h. Gusts up to 33 mph 53 km/h.
Tuesday, September 29, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
52°F 11°C
Overcast
Early-Evening
51°F 11°C
Overcast
Crisp with a high near 52°F 11°C, overcast throughout the day, with steady humidity and barometric pressure rising. Winds tapering down from W 15 mph 24 km/h to NNE 3 mph 5 km/h.
Wednesday, September 30, 2026
Mid-Morning
46°F 8°C
Overcast
Mid-Afternoon
48°F 9°C
Scattered Showers
Early-Evening
52°F 11°C
Fog
Brisk around 48°F 9°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Thursday, October 1, 2026
Mid-Morning
57°F 14°C
Scattered Showers
Mid-Afternoon
63°F 17°C
Light Showers
Early-Evening
60°F 16°C
Light Showers
Mildly cool near 63°F 17°C, scattered downpours possible, with steady humidity and barometric pressure falling.
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