Rainbow Lake, MT 14 Day Weather
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Rainbow Lake, MT Weather Forecast


Rainbow Lake, MT Weather Forecast Dated: 1103 AM Sun Sep 13 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.
Sunday, September 13, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
54°F 13°C
Sunny
Refreshing around 65°F 19°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the SSE to the SSW at 12 mph 18 km/h. Gusts up to 24 mph 39 km/h.
Monday, September 14, 2026
Mid-Morning
37°F 3°C
Sunny
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
46°F 8°C
Partly Cloudy
Cool and brisk at 55°F 13°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds switching from the SW to the NNW at 8 mph 12 km/h.
Tuesday, September 15, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
53°F 12°C
Partly Cloudy
Comfortable at 62°F 17°C, partly cloudy in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the SE to the SW at 5 mph 8 km/h.
Wednesday, September 16, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
57°F 14°C
Sunny
Mild temperatures up to 69°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds swinging from the ENE to the NNW at 6 mph 9 km/h.
Thursday, September 17, 2026
Mid-Morning
53°F 11°C
Cloudy
Mid-Afternoon
69°F 20°C
Overcast
Early-Evening
59°F 15°C
Overcast
Mild with a high of 69°F 20°C, cloudy in the morning, becoming overcast through the afternoon and evening, with increasing humidity and barometric pressure falling. Winds blowing from the WSW at 12 mph 19 km/h.
Friday, September 18, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
70°F 21°C
Cloudy
Early-Evening
59°F 15°C
Sunny
Pleasant near 70°F 21°C, sunny in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the SSE to the S at 6 mph 10 km/h.
Saturday, September 19, 2026
Mid-Morning
49°F 10°C
Overcast
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
49°F 9°C
Nearby Thunderstorms
Comfortable at 63°F 17°C, periods of heavy thunderstorms, with increasing humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
45°F 7°C
Overcast
Mid-Afternoon
58°F 14°C
Scattered Showers
Early-Evening
51°F 10°C
Scattered Showers
Cool with a high near 58°F 14°C, scattered downpours possible, with lower humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
57°F 14°C
Partly Cloudy
Refreshing around 67°F 19°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling.
Tuesday, September 22, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mild with a high of 73°F 23°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Wednesday, September 23, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
75°F 24°C
Overcast
Early-Evening
62°F 17°C
Partly Cloudy
Pleasant near 75°F 24°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the SE to the S at 9 mph 14 km/h.
Thursday, September 24, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
54°F 12°C
Light Showers
Early-Evening
47°F 9°C
Overcast
Crisp with a high near 54°F 12°C, dry early, with showers developing in the afternoon, with increasing humidity and steady pressure. Winds blowing from the SSW at 12 mph 19 km/h.
Friday, September 25, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
54°F 12°C
Overcast
Refreshing around 63°F 17°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds SW at 15 mph 25 km/h.
Saturday, September 26, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
54°F 13°C
Overcast
Mildly cool near 63°F 17°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds shifting from the SSE to the S at 7 mph 11 km/h.
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