Fossil Lake, MT 14 Day Weather
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Fossil Lake, MT Weather Forecast


Fossil Lake, MT Weather Forecast Dated: 1007 AM Wed Sep 23 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Wednesday, September 23, 2026
Mid-Morning
43°F 6°C
Scattered Showers
Mid-Afternoon
48°F 9°C
Scattered Showers
Early-Evening
45°F 7°C
Scattered Showers
Brisk around 48°F 9°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure.
Thursday, September 24, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
62°F 16°C
Sunny
Early-Evening
53°F 12°C
Sunny
Mildly cool near 62°F 16°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Friday, September 25, 2026
Mid-Morning
51°F 10°C
Partly Cloudy
Mid-Afternoon
63°F 17°C
Partly Cloudy
Early-Evening
53°F 12°C
Sunny
Comfortable at 63°F 17°C, partly cloudy through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds picking up from SSE at 2 mph 3 km/h to WSW at 15 mph 24 km/h. Gusts up to 29 mph 48 km/h.
Saturday, September 26, 2026
Mid-Morning
44°F 6°C
Sunny
Mid-Afternoon
56°F 13°C
Partly Cloudy
Early-Evening
48°F 9°C
Sunny
Crisp with a high near 56°F 13°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds switching from the SW to the SSW at 10 mph 15 km/h.
Sunday, September 27, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
58°F 15°C
Nearby Thunderstorms
Early-Evening
49°F 9°C
Cloudy
Refreshing around 58°F 15°C, locally heavy thunderstorms at times, with steady humidity and barometric pressure falling. Winds moving from the S to the SW at 10 mph 17 km/h. Gusts up to 20 mph 31 km/h.
Monday, September 28, 2026
Mid-Morning
36°F 2°C
Heavy Snow Showers
Mid-Afternoon
34°F 1°C
Heavy Snow Showers
Early-Evening
33°F 1°C
Heavy Snow Showers
Cold with a high near 34°F 1°C, on-and-off snow throughout the day, with steady humidity and barometric pressure rising. Snow accumulation up to 2 in. up to 5 cm.
Tuesday, September 29, 2026
Mid-Morning
31°F 0°C
Heavy Snow Showers
Mid-Afternoon
43°F 6°C
Overcast
Early-Evening
38°F 3°C
Overcast
Nippy around 43°F 6°C, early snow breaking for a drier afternoon, with lower humidity and steady pressure. Winds out of the W at 9 mph 14 km/h.
Wednesday, September 30, 2026
Mid-Morning
38°F 3°C
Sunny
Mid-Afternoon
55°F 13°C
Cloudy
Early-Evening
45°F 7°C
Cloudy
Crisp with a high near 55°F 13°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds shifting from the SSW to the SW at 5 mph 8 km/h.
Thursday, October 1, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
56°F 13°C
Sunny
Early-Evening
46°F 8°C
Cloudy
Brisk around 56°F 13°C, sunny through the afternoon, turning overcast this evening, with steady humidity and steady pressure. Winds turning from the SW to the S at 9 mph 14 km/h.
Friday, October 2, 2026
Mid-Morning
40°F 4°C
Sunny
Mid-Afternoon
54°F 12°C
Sunny
Early-Evening
44°F 7°C
Sunny
Cool and brisk at 54°F 12°C, sunny throughout the day, with lower humidity and steady pressure.
Saturday, October 3, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
50°F 10°C
Sunny
Comfortable at 63°F 17°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the SSW to the SW at 7 mph 10 km/h.
Sunday, October 4, 2026
Mid-Morning
45°F 7°C
Overcast
Mid-Afternoon
60°F 15°C
Overcast
Early-Evening
48°F 9°C
Sunny
Cool with a high near 60°F 15°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the SSW to the ESE at 6 mph 9 km/h.
Monday, October 5, 2026
Mid-Morning
43°F 6°C
Overcast
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
51°F 11°C
Sunny
Refreshing around 63°F 17°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the S to the SSW at 6 mph 10 km/h.
Tuesday, October 6, 2026
Mid-Morning
51°F 10°C
Cloudy
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
58°F 14°C
Partly Cloudy
Mild temperatures up to 68°F 20°C, overcast in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds picking up from ESE at 3 mph 5 km/h to SW at 19 mph 31 km/h. Gusts up to 36 mph 58 km/h.
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