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Alpine Lake, MT Weather Forecast
Alpine Lake, MT Weather Forecast Dated: 622 PM Sat Sep 12 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Saturday, September 12, 2026
Mid-Morning
40°F 4°C
Overcast
Mid-Afternoon
51°F 11°C
Cloudy
Early-Evening
47°F 8°C
Cloudy
Brisk around 51°F 11°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure.
Sunday, September 13, 2026
Mid-Morning
42°F 5°C
Partly Cloudy
Mid-Afternoon
50°F 10°C
Nearby Thunderstorms
Early-Evening
45°F 8°C
Scattered Showers
Cool and brisk at 50°F 10°C, locally heavy thunderstorms at times, with steady humidity and steady pressure. Winds picking up from E at 4 mph 6 km/h to W at 12 mph 19 km/h.
Monday, September 14, 2026
Mid-Morning
39°F 4°C
Scattered Showers
Mid-Afternoon
44°F 6°C
Scattered Showers
Early-Evening
42°F 6°C
Partly Cloudy
Cold with a high near 44°F 6°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds tapering down from W 17 mph 27 km/h to WSW 5 mph 8 km/h.
Tuesday, September 15, 2026
Mid-Morning
40°F 4°C
Overcast
Mid-Afternoon
54°F 12°C
Scattered Showers
Early-Evening
47°F 8°C
Light Showers
Crisp with a high near 54°F 12°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
35°F 2°C
Heavy Snow Showers
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
55°F 13°C
Sunny
Refreshing around 61°F 16°C, scattered morning snow before drying out later, with lower humidity and barometric pressure falling. Winds moving from the ENE to the WSW at 8 mph 13 km/h.
Thursday, September 17, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
56°F 14°C
Sunny
Mildly cool near 66°F 19°C, sunny throughout the day, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
61°F 17°C
Sunny
Comfortable with temperatures reaching 69°F 21°C, sunny throughout the day, with lower humidity and steady pressure.
Saturday, September 19, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
61°F 17°C
Sunny
Enjoyable around 73°F 23°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds out of the W at 10 mph 15 km/h.
Sunday, September 20, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
75°F 24°C
Overcast
Early-Evening
64°F 18°C
Sunny
Mild temperatures up to 75°F 24°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the WSW to the W at 8 mph 12 km/h.
Monday, September 21, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
61°F 16°C
Scattered Thunderstorms
Early-Evening
54°F 13°C
Scattered Thunderstorms
Mildly cool near 61°F 16°C, drier morning followed by thunderstorms lasting through evening, with increasing humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
56°F 14°C
Sunny
Comfortable at 67°F 19°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the W to the WSW at 8 mph 12 km/h.
Wednesday, September 23, 2026
Mid-Morning
42°F 6°C
Sunny
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
60°F 15°C
Sunny
Cool with a high near 65°F 18°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Thursday, September 24, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
46°F 8°C
Sunny
Enjoyable around 72°F 22°C, sunny through the afternoon, turning partly cloudy this evening, with increasing humidity and barometric pressure rising. Winds switching from the WSW to the E at 10 mph 17 km/h.
Friday, September 25, 2026
Mid-Morning
34°F 1°C
Heavy Snow Showers
Mid-Afternoon
35°F 2°C
Light Snow Showers
Early-Evening
36°F 2°C
Light Snow Showers
Biting cold near 35°F 2°C, persistent snow off and on through the day, with steady humidity and steady pressure. Snow accumulation up to 2 in. up to 5 cm.
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