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Donelson Lake, MT 14 Day Weather
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Donelson Lake, MT Weather Forecast
Donelson Lake, MT Weather Forecast Dated: 332 AM Fri Sep 18 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.
Friday, September 18, 2026
Mid-Morning
54°F 12°C
Nearby Thunderstorms
Mid-Afternoon
58°F 15°C
Scattered Showers
Early-Evening
52°F 11°C
Partly Cloudy
Refreshing around 58°F 15°C, periods of heavy thunderstorms, with steady humidity and steady pressure.
Saturday, September 19, 2026
Mid-Morning
47°F 8°C
Light Showers
Mid-Afternoon
48°F 9°C
Light Showers
Early-Evening
45°F 7°C
Light Showers
Cool and brisk at 48°F 9°C, persistent showers off and on through the day, with steady humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
50°F 10°C
Scattered Showers
Early-Evening
47°F 8°C
Scattered Showers
Chilly near 50°F 10°C, locally heavy downpours at times, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
59°F 15°C
Cloudy
Early-Evening
51°F 11°C
Cloudy
Cool with a high near 59°F 15°C, sunny in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
52°F 11°C
Partly Cloudy
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
53°F 11°C
Sunny
Refreshing around 61°F 16°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds out of the WSW at 14 mph 23 km/h.
Wednesday, September 23, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
58°F 14°C
Overcast
Early-Evening
48°F 9°C
Cloudy
Mildly cool near 58°F 14°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with increasing humidity and barometric pressure rising.
Thursday, September 24, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
56°F 13°C
Sunny
Comfortable at 65°F 19°C, sunny throughout the day, with steady humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
56°F 13°C
Partly Cloudy
Cool with a high near 65°F 18°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the SW to the SSW at 9 mph 15 km/h.
Saturday, September 26, 2026
Mid-Morning
51°F 11°C
Scattered Showers
Mid-Afternoon
49°F 9°C
Sunny
Early-Evening
41°F 5°C
Scattered Showers
Brisk around 49°F 9°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds moving from the SSW to the SW at 17 mph 27 km/h. Gusts up to 26 mph 42 km/h.
Sunday, September 27, 2026
Mid-Morning
37°F 3°C
Sunny
Mid-Afternoon
45°F 7°C
Scattered Showers
Early-Evening
37°F 3°C
Partly Cloudy
Cool and brisk at 45°F 7°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the WSW at 12 mph 19 km/h.
Monday, September 28, 2026
Mid-Morning
34°F 1°C
Freezing Rain
Mid-Afternoon
42°F 5°C
Scattered Showers
Early-Evening
36°F 2°C
Heavy Snow Showers
Biting cold near 42°F 5°C, locally heavy freezing rain at times, with increasing humidity and steady pressure. Winds shifting from the WSW to the W at 3 mph 5 km/h.
Tuesday, September 29, 2026
Mid-Morning
30°F -1°C
Heavy Snow Showers
Mid-Afternoon
31°F -1°C
Heavy Snow Showers
Early-Evening
27°F -3°C
Heavy Snow Showers
Frigid with highs around 31°F -1°C, on-and-off snow throughout the day, with steady humidity and barometric pressure rising. Snow accumulation up to 1 in. up to 3 cm.
Wednesday, September 30, 2026
Mid-Morning
26°F -3°C
Freezing Rain
Mid-Afternoon
35°F 2°C
Scattered Showers
Early-Evening
30°F -2°C
Partly Cloudy
Nippy around 35°F 2°C, periods of heavy freezing rain, with steady humidity and steady pressure.
Thursday, October 1, 2026
Mid-Morning
40°F 4°C
Sunny
Mid-Afternoon
51°F 11°C
Sunny
Early-Evening
42°F 6°C
Sunny
Cool and brisk at 51°F 11°C, sunny throughout the day, with steady humidity and steady pressure.
Donelson Lake, MT Weather Radar Map
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