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Onstad Park, MT Weather Forecast
Onstad Park, MT Weather Forecast Dated: 858 PM Sat Sep 19 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.
Saturday, September 19, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
62°F 17°C
Overcast
Early-Evening
61°F 16°C
Overcast
Refreshing around 62°F 17°C, overcast throughout the day, with lower humidity and steady pressure. Winds turning from the NE to the ENE at 9 mph 15 km/h.
Sunday, September 20, 2026
Mid-Morning
48°F 9°C
Scattered Showers
Mid-Afternoon
50°F 10°C
Overcast
Early-Evening
49°F 9°C
Scattered Showers
Cool and brisk at 50°F 10°C, scattered downpours possible, with steady humidity and steady pressure. Winds switching from the ESE to the SE at 9 mph 15 km/h.
Monday, September 21, 2026
Mid-Morning
52°F 11°C
Partly Cloudy
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
58°F 15°C
Overcast
Comfortable at 60°F 16°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the SSE to the SE at 14 mph 21 km/h. Gusts up to 22 mph 35 km/h.
Tuesday, September 22, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
63°F 17°C
Sunny
Cool with a high near 67°F 19°C, sunny throughout the day, with lower humidity and steady pressure. Winds out of the SSE at 16 mph 26 km/h. Gusts up to 25 mph 41 km/h.
Wednesday, September 23, 2026
Mid-Morning
53°F 12°C
Partly Cloudy
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
70°F 22°C
Cloudy
Mild with a high of 69°F 21°C, cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds shifting from the SSE to the SE at 9 mph 15 km/h. Gusts up to 20 mph 32 km/h.
Thursday, September 24, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
76°F 24°C
Sunny
Pleasant near 75°F 24°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
81°F 27°C
Cloudy
Early-Evening
75°F 24°C
Sunny
Balmy with temperatures reaching 81°F 27°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds increasing from the SE at 9 mph 15 km/h to SSE at 17 mph 28 km/h. Gusts up to 31 mph 51 km/h.
Saturday, September 26, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
57°F 14°C
Sunny
Early-Evening
59°F 15°C
Sunny
Crisp with a high near 57°F 14°C, sunny throughout the day, with lower humidity and steady pressure. Winds easing from NW 19 mph 30 km/h to NNW 6 mph 10 km/h.
Sunday, September 27, 2026
Mid-Morning
48°F 9°C
Light Rain
Mid-Afternoon
52°F 11°C
Scattered Showers
Early-Evening
60°F 16°C
Sunny
Brisk around 52°F 11°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds tapering down from N 21 mph 35 km/h to SE 5 mph 8 km/h.
Monday, September 28, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mildly cool near 63°F 17°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds swinging from the S to the SSE at 15 mph 24 km/h. Gusts up to 29 mph 47 km/h.
Tuesday, September 29, 2026
Mid-Morning
49°F 10°C
Sunny
Mid-Afternoon
69°F 20°C
Cloudy
Early-Evening
63°F 18°C
Cloudy
Pleasant near 69°F 20°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds out of the SSE at 24 mph 39 km/h. Gusts up to 36 mph 57 km/h.
Wednesday, September 30, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
63°F 18°C
Overcast
Cool with a high near 67°F 19°C, overcast throughout the day, with lower humidity and steady pressure. Winds blowing from the SSE at 17 mph 28 km/h. Gusts up to 34 mph 56 km/h.
Thursday, October 1, 2026
Mid-Morning
52°F 11°C
Overcast
Mid-Afternoon
58°F 14°C
Overcast
Early-Evening
60°F 15°C
Overcast
Refreshing around 58°F 14°C, overcast throughout the day, with steady humidity and barometric pressure rising. Winds decreasing from ESE 16 mph 25 km/h to ESE 6 mph 10 km/h.
Friday, October 2, 2026
Mid-Morning
48°F 9°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
62°F 17°C
Overcast
Mildly cool near 60°F 16°C, overcast throughout the day, with lower humidity and steady pressure. Winds out of the SE at 14 mph 22 km/h.
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