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Brown County, SD Weather Forecast
Brown County, SD Weather Forecast Dated: 1046 AM Mon Oct 12 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.
Monday, October 12, 2026
Mid-Morning
50°F 10°C
Scattered Showers
Mid-Afternoon
56°F 13°C
Light Showers
Early-Evening
51°F 11°C
Overcast
Brisk around 56°F 13°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the NNE to the NNW at 10 mph 16 km/h.
Tuesday, October 13, 2026
Mid-Morning
44°F 7°C
Cloudy
Mid-Afternoon
48°F 9°C
Overcast
Early-Evening
49°F 10°C
Sunny
Cool and brisk at 48°F 9°C, cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Wednesday, October 14, 2026
Mid-Morning
42°F 5°C
Sunny
Mid-Afternoon
58°F 14°C
Sunny
Early-Evening
53°F 11°C
Sunny
Comfortable at 58°F 14°C, sunny throughout the day, with lower humidity and steady pressure.
Thursday, October 15, 2026
Mid-Morning
48°F 9°C
Scattered Showers
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
53°F 12°C
Sunny
Cool with a high near 67°F 19°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds building from W at 4 mph 7 km/h to NW at 22 mph 36 km/h. Gusts up to 35 mph 55 km/h.
Friday, October 16, 2026
Mid-Morning
37°F 3°C
Sunny
Mid-Afternoon
50°F 10°C
Sunny
Early-Evening
45°F 7°C
Partly Cloudy
Brisk around 50°F 10°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds decreasing from NNW 15 mph 23 km/h to S 6 mph 9 km/h.
Saturday, October 17, 2026
Mid-Morning
44°F 7°C
Overcast
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
58°F 14°C
Sunny
Mildly cool near 62°F 17°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds swinging from the S to the SSW at 13 mph 20 km/h. Gusts up to 27 mph 44 km/h.
Sunday, October 18, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
63°F 17°C
Sunny
Comfortable with temperatures reaching 72°F 22°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the SSW to the SW at 8 mph 13 km/h.
Monday, October 19, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
57°F 13°C
Sunny
Cool with a high near 65°F 19°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNE to the E at 8 mph 13 km/h.
Tuesday, October 20, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
64°F 18°C
Sunny
Mild temperatures up to 69°F 21°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds out of the SSE at 15 mph 24 km/h. Gusts up to 26 mph 42 km/h.
Wednesday, October 21, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
76°F 25°C
Partly Cloudy
Early-Evening
72°F 22°C
Overcast
Mild with a high of 76°F 25°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds blowing from the S at 19 mph 31 km/h. Gusts up to 35 mph 57 km/h.
Thursday, October 22, 2026
Mid-Morning
67°F 19°C
Scattered Showers
Mid-Afternoon
64°F 18°C
Light Showers
Early-Evening
59°F 15°C
Overcast
Comfortable at 64°F 18°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds swinging from the S to the NNE at 12 mph 19 km/h.
Friday, October 23, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
64°F 18°C
Overcast
Cool with a high near 63°F 17°C, overcast throughout the day, with increasing humidity and barometric pressure falling. Winds shifting from the ENE to the ESE at 15 mph 25 km/h. Gusts up to 30 mph 47 km/h.
Saturday, October 24, 2026
Mid-Morning
56°F 14°C
Sunny
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
53°F 12°C
Scattered Showers
Refreshing around 59°F 15°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure rising. Winds turning from the SSW to the NNW at 19 mph 30 km/h. Gusts up to 28 mph 45 km/h.
Sunday, October 25, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
56°F 13°C
Sunny
Early-Evening
51°F 10°C
Sunny
Cool and brisk at 56°F 13°C, sunny throughout the day, with lower humidity and steady pressure. Winds decreasing from NNW 17 mph 27 km/h to W 9 mph 14 km/h.
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