Dewey County, SD 14 Day Weather - WeatherWorld.com
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Dewey County, SD Weather Forecast


Dewey County, SD Weather Forecast Dated: 255 PM Sat Oct 03 2026
Expect a mild stretch with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Saturday, October 3, 2026
Mid-Morning
61°F 16°C
Scattered Showers
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
63°F 17°C
Sunny
Pleasant near 72°F 22°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure rising. Winds turning from the NNW to the N at 12 mph 19 km/h. Gusts up to 22 mph 36 km/h.
Sunday, October 4, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
69°F 20°C
Sunny
Early-Evening
64°F 18°C
Sunny
Comfortable with temperatures reaching 69°F 20°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SSE to the ESE at 10 mph 16 km/h. Gusts up to 20 mph 32 km/h.
Monday, October 5, 2026
Mid-Morning
60°F 15°C
Sunny
Mid-Afternoon
81°F 27°C
Sunny
Early-Evening
75°F 24°C
Sunny
Quite warm around 81°F 27°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds decreasing from SSE 15 mph 23 km/h to W 7 mph 11 km/h.
Tuesday, October 6, 2026
Mid-Morning
65°F 18°C
Sunny
Mid-Afternoon
76°F 25°C
Sunny
Early-Evening
69°F 20°C
Sunny
Mild temperatures up to 76°F 25°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the N to the E at 6 mph 10 km/h.
Wednesday, October 7, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
65°F 18°C
Overcast
Mild with a high of 72°F 22°C, overcast throughout the day, with steady humidity and steady pressure. Winds shifting from the SSE to the NE at 9 mph 14 km/h.
Thursday, October 8, 2026
Mid-Morning
58°F 14°C
Partly Cloudy
Mid-Afternoon
71°F 22°C
Overcast
Early-Evening
64°F 18°C
Sunny
Pleasant near 71°F 22°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds SE at 12 mph 19 km/h.
Friday, October 9, 2026
Mid-Morning
58°F 14°C
Cloudy
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
65°F 19°C
Sunny
Comfortable with temperatures reaching 74°F 23°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds switching from the ESE to the E at 13 mph 21 km/h. Gusts up to 22 mph 36 km/h.
Saturday, October 10, 2026
Mid-Morning
65°F 19°C
Partly Cloudy
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
77°F 25°C
Overcast
Quite warm around 86°F 30°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds blowing from the SSE at 15 mph 24 km/h. Gusts up to 35 mph 55 km/h.
Sunday, October 11, 2026
Mid-Morning
69°F 20°C
Overcast
Mid-Afternoon
84°F 29°C
Partly Cloudy
Early-Evening
75°F 24°C
Cloudy
Warm temperatures up to 84°F 29°C, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds SSE at 19 mph 31 km/h. Gusts up to 35 mph 57 km/h.
Monday, October 12, 2026
Mid-Morning
49°F 10°C
Light Rain
Mid-Afternoon
48°F 9°C
Drizzle
Early-Evening
49°F 10°C
Overcast
Cool and brisk at 48°F 9°C, intermittent showers through midday, easing by evening, with lower humidity and steady pressure. Winds out of the WNW at 19 mph 31 km/h. Gusts up to 25 mph 40 km/h.
Tuesday, October 13, 2026
Mid-Morning
49°F 9°C
Sunny
Mid-Afternoon
58°F 14°C
Overcast
Early-Evening
52°F 11°C
Sunny
Comfortable at 58°F 14°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure rising. Winds blowing from the NW at 24 mph 38 km/h. Gusts up to 26 mph 41 km/h.
Wednesday, October 14, 2026
Mid-Morning
48°F 9°C
Cloudy
Mid-Afternoon
58°F 14°C
Partly Cloudy
Early-Evening
52°F 11°C
Clear
Cool with a high near 58°F 14°C, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds WNW at 23 mph 36 km/h.
Thursday, October 15, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
65°F 18°C
Clear
Enjoyable around 74°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the W to the WNW at 9 mph 13 km/h.
Friday, October 16, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
70°F 21°C
Partly Cloudy
Early-Evening
65°F 18°C
Clear
Mild temperatures up to 70°F 21°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.
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