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Upper Boulder Lake, MT 14 Day Weather
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Upper Boulder Lake, MT Weather Forecast
Upper Boulder Lake, MT Weather Forecast Dated: 729 PM Sat Oct 10 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and a stable pattern will dominate.
Saturday, October 10, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
55°F 13°C
Scattered Showers
Early-Evening
37°F 3°C
Scattered Showers
Brisk around 55°F 13°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure rising. Winds turning from the SE to the ENE at 7 mph 11 km/h.
Sunday, October 11, 2026
Mid-Morning
24°F -5°C
Heavy Snow
Mid-Afternoon
28°F -2°C
Heavy Snow
Early-Evening
25°F -4°C
Snow
Freezing temperatures near 28°F -2°C, persistent snow off and on through the day, with steady humidity and steady pressure. New snow accumulation of 1 to 4 in. 3 to 10 cm.
Monday, October 12, 2026
Mid-Morning
24°F -5°C
Light Fog
Mid-Afternoon
34°F 1°C
Partly Cloudy
Early-Evening
30°F -1°C
Light Fog
Cold with a high near 34°F 1°C, overcast in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.
Tuesday, October 13, 2026
Mid-Morning
31°F -1°C
Sunny
Mid-Afternoon
42°F 6°C
Scattered Showers
Early-Evening
34°F 1°C
Sunny
Nippy around 42°F 6°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Wednesday, October 14, 2026
Mid-Morning
31°F -1°C
Sunny
Mid-Afternoon
44°F 7°C
Sunny
Early-Evening
37°F 3°C
Sunny
Biting cold near 44°F 7°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Thursday, October 15, 2026
Mid-Morning
36°F 2°C
Sunny
Mid-Afternoon
44°F 7°C
Scattered Showers
Early-Evening
30°F -2°C
Freezing Rain
Cold with a high near 44°F 7°C, locally heavy downpours at times, with steady humidity and barometric pressure rising.
Friday, October 16, 2026
Mid-Morning
23°F -5°C
Partly Cloudy
Mid-Afternoon
39°F 4°C
Partly Cloudy
Early-Evening
30°F -1°C
Overcast
Nippy around 39°F 4°C, cloudy in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling.
Saturday, October 17, 2026
Mid-Morning
34°F 1°C
Overcast
Mid-Afternoon
50°F 10°C
Overcast
Early-Evening
41°F 5°C
Overcast
Crisp with a high near 50°F 10°C, overcast throughout the day, with steady humidity and barometric pressure falling.
Sunday, October 18, 2026
Mid-Morning
38°F 3°C
Overcast
Mid-Afternoon
52°F 11°C
Sunny
Early-Evening
44°F 7°C
Sunny
Brisk around 52°F 11°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Monday, October 19, 2026
Mid-Morning
42°F 5°C
Sunny
Mid-Afternoon
56°F 13°C
Overcast
Early-Evening
47°F 9°C
Overcast
Cool and brisk at 56°F 13°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds switching from the SSW to the S at 7 mph 11 km/h.
Tuesday, October 20, 2026
Mid-Morning
42°F 5°C
Sunny
Mid-Afternoon
46°F 8°C
Overcast
Early-Evening
40°F 5°C
Overcast
Chilly near 46°F 8°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds decreasing from SW 19 mph 31 km/h to WSW 11 mph 18 km/h. Gusts up to 22 mph 35 km/h.
Wednesday, October 21, 2026
Mid-Morning
33°F 1°C
Sunny
Mid-Afternoon
42°F 6°C
Overcast
Early-Evening
35°F 2°C
Cloudy
Cold with a high near 42°F 6°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure rising. Winds swinging from the W to the NE at 5 mph 8 km/h.
Thursday, October 22, 2026
Mid-Morning
34°F 1°C
Sunny
Mid-Afternoon
51°F 11°C
Cloudy
Early-Evening
43°F 7°C
Overcast
Brisk around 51°F 11°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure.
Friday, October 23, 2026
Mid-Morning
43°F 6°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
50°F 10°C
Partly Cloudy
Mildly cool near 60°F 16°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling.
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