Plains, MT 14 Day Weather - 59859 WeatherWorld.com
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Plains, MT Weather Forecast


Plains, MT Weather Forecast Dated: 209 AM Tue Sep 15 2026
Expect a cool pattern with plenty of sunshine and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.
Tuesday, September 15, 2026
Mid-Morning
37°F 3°C
Overcast
Mid-Afternoon
52°F 11°C
Overcast
Early-Evening
54°F 12°C
Overcast
Brisk around 52°F 11°C, overcast throughout the day, with lower humidity and barometric pressure falling.
Wednesday, September 16, 2026
Mid-Morning
41°F 5°C
Sunny
Mid-Afternoon
60°F 16°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mildly cool near 60°F 16°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Thursday, September 17, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
68°F 20°C
Sunny
Comfortable at 67°F 19°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling.
Friday, September 18, 2026
Mid-Morning
48°F 9°C
Scattered Showers
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
66°F 19°C
Cloudy
Mild temperatures up to 68°F 20°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds out of the WSW at 3 mph 5 km/h.
Saturday, September 19, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
65°F 18°C
Sunny
Mild with a high of 68°F 20°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling.
Sunday, September 20, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
67°F 20°C
Sunny
Pleasant near 70°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Monday, September 21, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
67°F 20°C
Sunny
Comfortable with temperatures reaching 73°F 23°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds building from WSW at 2 mph 4 km/h to SW at 10 mph 17 km/h.
Tuesday, September 22, 2026
Mid-Morning
50°F 10°C
Overcast
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
62°F 17°C
Cloudy
Cool with a high near 65°F 19°C, overcast in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds moving from the WSW to the SW at 9 mph 14 km/h.
Wednesday, September 23, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
66°F 19°C
Sunny
Mild temperatures up to 69°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Thursday, September 24, 2026
Mid-Morning
47°F 9°C
Sunny
Mid-Afternoon
71°F 21°C
Sunny
Early-Evening
69°F 20°C
Sunny
Mild with a high of 71°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Friday, September 25, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
69°F 21°C
Sunny
Pleasant near 70°F 21°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Saturday, September 26, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
68°F 20°C
Overcast
Comfortable with temperatures reaching 68°F 20°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling.
Sunday, September 27, 2026
Mid-Morning
44°F 7°C
Overcast
Mid-Afternoon
58°F 15°C
Overcast
Early-Evening
56°F 13°C
Overcast
Refreshing around 58°F 15°C, overcast throughout the day, with lower humidity and steady pressure.
Monday, September 28, 2026
Mid-Morning
38°F 3°C
Cloudy
Mid-Afternoon
52°F 11°C
Sunny
Early-Evening
54°F 12°C
Sunny
Cool and brisk at 52°F 11°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling.
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