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Thunderbolt Lake, MT 14 Day Weather
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Thunderbolt Lake, MT Weather Forecast
Thunderbolt Lake, MT Weather Forecast Dated: 735 AM Fri Oct 09 2026
Expect a cool pattern with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, October 9, 2026
Mid-Morning
42°F 5°C
Cloudy
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
54°F 12°C
Partly Cloudy
Pleasant near 68°F 20°C, cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SSE to the SSW at 9 mph 14 km/h.
Saturday, October 10, 2026
Mid-Morning
52°F 11°C
Nearby Thunderstorms
Mid-Afternoon
57°F 14°C
Nearby Thunderstorms
Early-Evening
43°F 6°C
Nearby Thunderstorms
Cool and brisk at 57°F 14°C, locally heavy thunderstorms at times, with increasing humidity and steady pressure. Winds switching from the S to the NNW at 6 mph 9 km/h.
Sunday, October 11, 2026
Mid-Morning
32°F 0°C
Heavy Snow
Mid-Afternoon
32°F 0°C
Heavy Snow
Early-Evening
27°F -3°C
Heavy Snow
Cold with a high near 32°F 0°C, on-and-off snow throughout the day, with steady humidity and steady pressure. New snow accumulation of 8 to 11 in. 20 to 28 cm.
Monday, October 12, 2026
Mid-Morning
27°F -3°C
Snow
Mid-Afternoon
38°F 3°C
Drizzle
Early-Evening
37°F 3°C
Fog
Nippy around 38°F 3°C, intermittent snow through midday, easing by evening, with steady humidity and steady pressure. New snow accumulation of 1 to 4 in. 3 to 10 cm.
Tuesday, October 13, 2026
Mid-Morning
27°F -3°C
Light Fog
Mid-Afternoon
35°F 2°C
Fog
Early-Evening
34°F 1°C
Drizzle
Biting cold near 35°F 2°C, mainly dry until evening showers arrive, with steady humidity and steady pressure.
Wednesday, October 14, 2026
Mid-Morning
36°F 2°C
Fog
Mid-Afternoon
43°F 6°C
Light Fog
Early-Evening
28°F -2°C
Freezing Fog
Cold with a high near 43°F 6°C, overcast in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.
Thursday, October 15, 2026
Mid-Morning
33°F 1°C
Sunny
Mid-Afternoon
46°F 8°C
Sunny
Early-Evening
28°F -3°C
Sunny
Chilly near 46°F 8°C, sunny throughout the day, with steady humidity and steady pressure.
Friday, October 16, 2026
Mid-Morning
30°F -1°C
Sunny
Mid-Afternoon
48°F 9°C
Sunny
Early-Evening
29°F -2°C
Partly Cloudy
Crisp with a high near 48°F 9°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the E to the SSE at 8 mph 12 km/h.
Saturday, October 17, 2026
Mid-Morning
29°F -2°C
Sunny
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
33°F 1°C
Sunny
Brisk around 55°F 13°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds swinging from the SSE to the SE at 8 mph 12 km/h.
Sunday, October 18, 2026
Mid-Morning
30°F -1°C
Overcast
Mid-Afternoon
56°F 13°C
Overcast
Early-Evening
35°F 1°C
Partly Cloudy
Cool and brisk at 56°F 13°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds blowing from the S at 7 mph 11 km/h.
Monday, October 19, 2026
Mid-Morning
32°F 0°C
Partly Cloudy
Mid-Afternoon
56°F 13°C
Overcast
Early-Evening
36°F 2°C
Overcast
Chilly near 56°F 13°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds SSW at 10 mph 16 km/h.
Tuesday, October 20, 2026
Mid-Morning
38°F 3°C
Sunny
Mid-Afternoon
51°F 10°C
Sunny
Early-Evening
34°F 1°C
Sunny
Crisp with a high near 51°F 10°C, sunny throughout the day, with steady humidity and steady pressure.
Wednesday, October 21, 2026
Mid-Morning
31°F -1°C
Sunny
Mid-Afternoon
53°F 12°C
Sunny
Early-Evening
32°F 0°C
Sunny
Brisk around 53°F 12°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the SSE to the S at 8 mph 13 km/h.
Thursday, October 22, 2026
Mid-Morning
31°F -1°C
Sunny
Mid-Afternoon
50°F 10°C
Sunny
Early-Evening
30°F -2°C
Sunny
Cool and brisk at 50°F 10°C, sunny throughout the day, with lower humidity and steady pressure.
Thunderbolt Lake, MT Weather Radar Map
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