Loon Lake, MT 14 Day Weather
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Loon Lake, MT Weather Forecast


Loon Lake, MT Weather Forecast Dated: 435 AM Thu Sep 10 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.
Thursday, September 10, 2026
Mid-Morning
66°F 19°C
Overcast
Mid-Afternoon
64°F 18°C
Cloudy
Early-Evening
61°F 16°C
Overcast
Refreshing around 64°F 18°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with increasing humidity and barometric pressure falling. Winds turning from the SE to the W at 5 mph 8 km/h.
Friday, September 11, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
51°F 11°C
Scattered Thunderstorms
Early-Evening
52°F 11°C
Light Showers
Cool and brisk at 51°F 11°C, clouds and thunderstorms taking over for the afternoon and evening, with increasing humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
37°F 3°C
Overcast
Mid-Afternoon
55°F 13°C
Cloudy
Early-Evening
55°F 13°C
Overcast
Chilly near 55°F 13°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling.
Sunday, September 13, 2026
Mid-Morning
38°F 3°C
Sunny
Mid-Afternoon
56°F 14°C
Sunny
Early-Evening
54°F 12°C
Sunny
Crisp with a high near 56°F 14°C, sunny throughout the day, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
37°F 3°C
Sunny
Mid-Afternoon
62°F 16°C
Partly Cloudy
Early-Evening
57°F 14°C
Partly Cloudy
Refreshing around 62°F 16°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and barometric pressure falling.
Tuesday, September 15, 2026
Mid-Morning
42°F 5°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
56°F 13°C
Overcast
Mildly cool near 60°F 16°C, overcast throughout the day, with steady humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
38°F 3°C
Sunny
Mid-Afternoon
57°F 14°C
Sunny
Early-Evening
55°F 13°C
Sunny
Chilly near 57°F 14°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
39°F 4°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
61°F 16°C
Sunny
Cool with a high near 64°F 18°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Friday, September 18, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
67°F 19°C
Sunny
Mild temperatures up to 71°F 22°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
66°F 19°C
Partly Cloudy
Early-Evening
58°F 15°C
Sunny
Mildly cool near 66°F 19°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds switching from the SE to the SW at 8 mph 13 km/h.
Sunday, September 20, 2026
Mid-Morning
40°F 4°C
Overcast
Mid-Afternoon
45°F 7°C
Scattered Showers
Early-Evening
46°F 8°C
Overcast
Chilly near 45°F 7°C, scattered downpours possible, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
38°F 3°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
59°F 15°C
Overcast
Cool with a high near 62°F 17°C, sunny through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling.
Tuesday, September 22, 2026
Mid-Morning
47°F 8°C
Overcast
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
63°F 17°C
Overcast
Refreshing around 66°F 19°C, overcast throughout the day, with lower humidity and barometric pressure falling.
Wednesday, September 23, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
70°F 21°C
Overcast
Early-Evening
66°F 19°C
Partly Cloudy
Mild temperatures up to 70°F 21°C, overcast through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling.
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