Lake Alva, MT 14 Day Weather
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Lake Alva, MT Weather Forecast


Lake Alva, MT Weather Forecast Dated: 1014 PM Mon Aug 31 2026 (Lake Alva Time)
Expect a cool pattern with a mix of sun and clouds and occasional showers over the next two weeks. moderate humidity and no major pressure swings will dominate.
Monday, August 31, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
72°F 22°C
Sunny
Warm with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and barometric pressure falling.
Tuesday, September 1, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
80°F 27°C
Overcast
Early-Evening
71°F 22°C
Overcast
Very warm with overcast skies, steady humidity and barometric pressure falling. Winds shifting from SSE to SSW at 8 mph 12 km/h.
Wednesday, September 2, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
74°F 24°C
Nearby Thunderstorms
Early-Evening
47°F 9°C
Light Showers
Warm with cloudy skies, increasing humidity and steady pressure. Isolated thunderstorms possible.
Thursday, September 3, 2026
Mid-Morning
45°F 7°C
Partly Cloudy
Mid-Afternoon
52°F 11°C
Scattered Showers
Early-Evening
46°F 8°C
Sunny
Cool with a mix of sun and clouds, lower humidity and steady pressure. A few spotty showers; otherwise dry. Winds shifting from SSW to NNW at 5 mph 7 km/h.
Friday, September 4, 2026
Mid-Morning
46°F 8°C
Partly Cloudy
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
52°F 11°C
Sunny
Cool with partly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure.
Saturday, September 5, 2026
Mid-Morning
42°F 5°C
Light Showers
Mid-Afternoon
63°F 17°C
Cloudy
Early-Evening
55°F 13°C
Sunny
Cool with mostly cloudy skies, lower humidity and steady pressure.
Sunday, September 6, 2026
Mid-Morning
49°F 9°C
Sunny
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
58°F 14°C
Sunny
Cool with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from SSW to N at 6 mph 9 km/h.
Monday, September 7, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
57°F 14°C
Scattered Showers
Warm with overcast skies, increasing humidity and steady pressure.
Tuesday, September 8, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
70°F 21°C
Overcast
Early-Evening
62°F 17°C
Overcast
Warm with overcast skies, lower humidity and barometric pressure falling.
Wednesday, September 9, 2026
Mid-Morning
47°F 8°C
Light Showers
Mid-Afternoon
51°F 11°C
Light Showers
Early-Evening
45°F 7°C
Overcast
Cool with a mix of sun and clouds, lower humidity and steady pressure.
Thursday, September 10, 2026
Mid-Morning
37°F 3°C
Light Showers
Mid-Afternoon
38°F 3°C
Light Showers
Early-Evening
38°F 3°C
Light Fog
Cool with a mix of sun and clouds, steady humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
40°F 4°C
Sunny
Mid-Afternoon
60°F 15°C
Sunny
Early-Evening
53°F 12°C
Partly Cloudy
Cool with mostly sunny skies in the morning, mostly sunny in the afternoon, and mostly cloudy in the evening, lower humidity and barometric pressure falling.
Saturday, September 12, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
70°F 21°C
Partly Cloudy
Early-Evening
61°F 16°C
Overcast
Warm with mostly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, lower humidity and barometric pressure falling. Winds shifting from SE to N at 6 mph 9 km/h.
Sunday, September 13, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
71°F 21°C
Sunny
Early-Evening
60°F 16°C
Sunny
Warm with mostly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, steady humidity and steady pressure. Winds shifting from S to N at 4 mph 6 km/h.
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