Thunder Lake, MT 14 Day Weather
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Thunder Lake, MT Weather Forecast


Thunder Lake, MT Weather Forecast Dated: 1002 AM Mon Sep 14 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Monday, September 14, 2026
Mid-Morning
48°F 9°C
Partly Cloudy
Mid-Afternoon
61°F 16°C
Partly Cloudy
Early-Evening
52°F 11°C
Sunny
Refreshing around 61°F 16°C, partly cloudy through the afternoon, turning sunny this evening, with lower humidity and barometric pressure rising. Winds out of the WNW at 30 mph 49 km/h.
Tuesday, September 15, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
58°F 15°C
Overcast
Mildly cool near 66°F 19°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the ENE to the NE at 15 mph 23 km/h.
Wednesday, September 16, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
62°F 17°C
Sunny
Enjoyable around 72°F 22°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds moving from the W to the ENE at 15 mph 23 km/h. Gusts up to 24 mph 39 km/h.
Thursday, September 17, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
79°F 26°C
Scattered Showers
Early-Evening
67°F 20°C
Scattered Showers
Mild temperatures up to 79°F 26°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds swinging from the W to the NNE at 7 mph 12 km/h.
Friday, September 18, 2026
Mid-Morning
58°F 14°C
Overcast
Mid-Afternoon
56°F 13°C
Light Showers
Early-Evening
54°F 12°C
Light Showers
Brisk around 56°F 13°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and barometric pressure rising. Winds shifting from the W to the WSW at 9 mph 14 km/h.
Saturday, September 19, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
65°F 19°C
Sunny
Pleasant near 74°F 23°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds increasing from the W at 4 mph 6 km/h to NE at 13 mph 20 km/h. Gusts up to 20 mph 33 km/h.
Sunday, September 20, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
83°F 29°C
Cloudy
Early-Evening
72°F 23°C
Overcast
Balmy with temperatures reaching 83°F 29°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds switching from the W to the WSW at 3 mph 4 km/h.
Monday, September 21, 2026
Mid-Morning
62°F 17°C
Cloudy
Mid-Afternoon
81°F 27°C
Overcast
Early-Evening
65°F 19°C
Scattered Showers
Quite warm around 81°F 27°C, scattered downpours possible, with increasing humidity and steady pressure. Winds moving from the W to the ENE at 3 mph 5 km/h.
Tuesday, September 22, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
78°F 26°C
Sunny
Early-Evening
71°F 22°C
Sunny
Mild temperatures up to 78°F 26°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds swinging from the W to the ENE at 11 mph 17 km/h.
Wednesday, September 23, 2026
Mid-Morning
62°F 17°C
Scattered Showers
Mid-Afternoon
79°F 26°C
Cloudy
Early-Evening
65°F 19°C
Sunny
Mild with a high of 79°F 26°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds out of the SW at 19 mph 31 km/h. Gusts up to 20 mph 33 km/h.
Thursday, September 24, 2026
Mid-Morning
60°F 15°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
74°F 23°C
Overcast
Warm and summery near 82°F 28°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the W to the SSW at 6 mph 10 km/h.
Friday, September 25, 2026
Mid-Morning
63°F 17°C
Overcast
Mid-Afternoon
79°F 26°C
Cloudy
Early-Evening
71°F 22°C
Cloudy
Comfortable with temperatures reaching 79°F 26°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the W to the SSW at 7 mph 10 km/h.
Saturday, September 26, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
74°F 23°C
Partly Cloudy
Quite warm around 85°F 29°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds out of the SW at 9 mph 15 km/h.
Sunday, September 27, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
85°F 30°C
Overcast
Early-Evening
71°F 22°C
Light Showers
Warm temperatures up to 85°F 30°C, mainly dry until evening showers arrive, with increasing humidity and barometric pressure falling. Winds blowing from the WSW at 11 mph 18 km/h.
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