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Summit Trail, MT Weather Forecast
Summit Trail, MT Weather Forecast Dated: 739 PM Thu Sep 03 2026
Expect a cool pattern with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Thursday, September 3, 2026
Mid-Morning
47°F 9°C
Scattered Showers
Mid-Afternoon
57°F 14°C
Scattered Showers
Early-Evening
55°F 13°C
Scattered Showers
Brisk around 57°F 14°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the SW to the WSW at 6 mph 10 km/h.
Friday, September 4, 2026
Mid-Morning
41°F 5°C
Light Showers
Mid-Afternoon
56°F 13°C
Scattered Showers
Early-Evening
50°F 10°C
Scattered Showers
Cool and brisk at 56°F 13°C, scattered downpours possible, with lower humidity and steady pressure.
Saturday, September 5, 2026
Mid-Morning
46°F 8°C
Light Fog
Mid-Afternoon
50°F 10°C
Scattered Showers
Early-Evening
51°F 11°C
Scattered Thunderstorms
Chilly near 50°F 10°C, locally heavy downpours at times, with steady humidity and steady pressure.
Sunday, September 6, 2026
Mid-Morning
48°F 9°C
Overcast
Mid-Afternoon
60°F 15°C
Nearby Thunderstorms
Early-Evening
55°F 13°C
Nearby Thunderstorms
Cool with a high near 60°F 15°C, periods of heavy thunderstorms, with lower humidity and steady pressure.
Monday, September 7, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
62°F 17°C
Nearby Thunderstorms
Early-Evening
53°F 12°C
Sunny
Refreshing around 62°F 17°C, locally heavy thunderstorms at times, with lower humidity and steady pressure. Winds switching from the SW to the WNW at 4 mph 7 km/h.
Tuesday, September 8, 2026
Mid-Morning
49°F 9°C
Sunny
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
55°F 12°C
Overcast
Mildly cool near 63°F 17°C, sunny through the afternoon, turning overcast this evening, with steady humidity and steady pressure. Winds moving from the SW to the SSW at 6 mph 9 km/h.
Wednesday, September 9, 2026
Mid-Morning
53°F 11°C
Overcast
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
60°F 16°C
Overcast
Comfortable with temperatures reaching 71°F 22°C, overcast in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling.
Thursday, September 10, 2026
Mid-Morning
57°F 14°C
Partly Cloudy
Mid-Afternoon
69°F 21°C
Cloudy
Early-Evening
58°F 15°C
Overcast
Enjoyable around 69°F 21°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds swinging from the S to the WSW at 7 mph 12 km/h.
Friday, September 11, 2026
Mid-Morning
47°F 9°C
Overcast
Mid-Afternoon
60°F 15°C
Scattered Showers
Early-Evening
51°F 11°C
Scattered Showers
Refreshing around 60°F 15°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds shifting from the WSW to the W at 10 mph 16 km/h. Gusts up to 21 mph 34 km/h.
Saturday, September 12, 2026
Mid-Morning
45°F 7°C
Overcast
Mid-Afternoon
66°F 19°C
Nearby Thunderstorms
Early-Evening
54°F 12°C
Cloudy
Mildly cool near 66°F 19°C, periods of heavy thunderstorms, with lower humidity and barometric pressure falling.
Sunday, September 13, 2026
Mid-Morning
34°F 1°C
Heavy Rain Showers
Mid-Afternoon
36°F 2°C
Light Showers
Early-Evening
35°F 2°C
Fog
Biting cold near 36°F 2°C, showers lingering into the afternoon before clearing, with steady humidity and barometric pressure rising.
Monday, September 14, 2026
Mid-Morning
36°F 2°C
Fog
Mid-Afternoon
49°F 9°C
Overcast
Early-Evening
45°F 7°C
Overcast
Crisp with a high near 49°F 9°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds W at 8 mph 12 km/h.
Tuesday, September 15, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
60°F 16°C
Partly Cloudy
Early-Evening
54°F 12°C
Partly Cloudy
Refreshing around 60°F 16°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds out of the WSW at 13 mph 21 km/h.
Wednesday, September 16, 2026
Mid-Morning
45°F 7°C
Partly Cloudy
Mid-Afternoon
63°F 17°C
Cloudy
Early-Evening
55°F 13°C
Sunny
Mildly cool near 63°F 17°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling.
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