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


Thunder Lake, MT Weather Forecast Dated: 1046 AM Mon Sep 21 2026
Expect a mild stretch with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Monday, September 21, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
64°F 18°C
Sunny
Pleasant near 71°F 22°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the W to the NE at 8 mph 13 km/h.
Tuesday, September 22, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
76°F 24°C
Overcast
Early-Evening
68°F 20°C
Overcast
Comfortable with temperatures reaching 76°F 24°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds switching from the W to the SW at 7 mph 11 km/h.
Wednesday, September 23, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
68°F 20°C
Sunny
Enjoyable around 75°F 24°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the W to the NE at 4 mph 6 km/h.
Thursday, September 24, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
80°F 26°C
Sunny
Early-Evening
69°F 21°C
Sunny
Warm temperatures up to 80°F 26°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Friday, September 25, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
83°F 28°C
Overcast
Early-Evening
71°F 22°C
Overcast
Very warm with a high of 83°F 28°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds swinging from the W to the SSW at 6 mph 10 km/h.
Saturday, September 26, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
64°F 18°C
Cloudy
Early-Evening
58°F 14°C
Overcast
Mildly cool near 64°F 18°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds shifting from the WNW to the ENE at 10 mph 16 km/h.
Sunday, September 27, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
56°F 13°C
Overcast
Comfortable at 63°F 17°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the W to the WSW at 8 mph 12 km/h.
Monday, September 28, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
60°F 16°C
Sunny
Enjoyable around 70°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds switching from the W to the WSW at 2 mph 4 km/h.
Tuesday, September 29, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
79°F 26°C
Partly Cloudy
Early-Evening
65°F 19°C
Partly Cloudy
Mild temperatures up to 79°F 26°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds moving from the W to the ENE at 5 mph 8 km/h.
Wednesday, September 30, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
65°F 18°C
Cloudy
Mild with a high of 76°F 24°C, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds swinging from the W to the SSW at 10 mph 15 km/h.
Thursday, October 1, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
62°F 17°C
Sunny
Pleasant near 71°F 22°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the W to the ESE at 6 mph 9 km/h.
Friday, October 2, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
69°F 20°C
Sunny
Balmy with temperatures reaching 82°F 28°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds turning from the W to the WSW at 8 mph 12 km/h.
Saturday, October 3, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
81°F 27°C
Overcast
Early-Evening
68°F 20°C
Overcast
Quite warm around 81°F 27°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds increasing from the W at 4 mph 6 km/h to SW at 14 mph 23 km/h.
Sunday, October 4, 2026
Mid-Morning
49°F 9°C
Light Showers
Mid-Afternoon
41°F 5°C
Scattered Showers
Early-Evening
39°F 4°C
Light Showers
Biting cold near 41°F 5°C, scattered downpours possible, with steady humidity and barometric pressure rising. Winds picking up from W at 7 mph 12 km/h to W at 15 mph 24 km/h. Gusts up to 27 mph 43 km/h.
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