Mallard Slough, SD 14 Day Weather
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Mallard Slough, SD Weather Forecast


Mallard Slough, SD Weather Forecast Dated: 903 AM Sun Aug 30 2026 (Mallard Slough Time)
Expect a very warm period with a mix of sun and clouds and mostly dry weather over the next two weeks. comfortable humidity and no major pressure swings will dominate.
Sunday, August 30, 2026
Mid-Morning
69°F 20°C
Rain
Mid-Afternoon
80°F 27°C
Rain
Early-Evening
83°F 29°C
Overcast
Very warm with cloudy skies, lower humidity and steady pressure. Moderate rain possible at times. Winds shifting from E to SE at 12 mph.
Monday, August 31, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
84°F 29°C
Overcast
Very warm with mostly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, lower humidity and steady pressure. Winds shifting from WNW to SW at 10 mph.
Tuesday, September 1, 2026
Mid-Morning
74°F 23°C
Overcast
Mid-Afternoon
77°F 25°C
Light Showers
Early-Evening
73°F 22°C
Light Showers
Warm with a mix of sun and clouds, increasing humidity and steady pressure.
Wednesday, September 2, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
87°F 30°C
Overcast
Early-Evening
85°F 30°C
Overcast
Very warm with overcast skies, lower humidity and barometric pressure falling. Winds increasing from the S at 3 mph to ESE at 11 mph.
Thursday, September 3, 2026
Mid-Morning
71°F 21°C
Overcast
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
85°F 30°C
Sunny
Very warm with mostly cloudy skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from SSE to W at 7 mph.
Friday, September 4, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
88°F 31°C
Scattered Showers
Early-Evening
84°F 29°C
Scattered Showers
Very warm with a mix of sun and clouds, lower humidity and barometric pressure falling. Spotty showers, dry in most areas. Winds shifting from E to SE at 11 mph.
Saturday, September 5, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
79°F 26°C
Partly Cloudy
Early-Evening
71°F 22°C
Overcast
Warm with mostly sunny skies in the morning, then mostly cloudy for the afternoon and evening, lower humidity and steady pressure. Winds shifting from E to NNW at 15 mph.
Sunday, September 6, 2026
Mid-Morning
56°F 13°C
Sunny
Mid-Afternoon
68°F 20°C
Cloudy
Early-Evening
66°F 19°C
Overcast
Cool with mostly cloudy skies, lower humidity and steady pressure. Winds shifting from NNW to SE at 9 mph.
Monday, September 7, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
76°F 25°C
Partly Cloudy
Early-Evening
70°F 21°C
Sunny
Warm with mostly cloudy skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and barometric pressure falling. Winds shifting from SE to NNE at 13 mph.
Tuesday, September 8, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
84°F 29°C
Cloudy
Very warm with mostly sunny skies in the morning, partly sunny in the afternoon, and mostly sunny in the evening, lower humidity and barometric pressure falling. Winds shifting from S to NNW at 16 mph.
Wednesday, September 9, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
74°F 24°C
Overcast
Early-Evening
73°F 23°C
Overcast
Warm with overcast skies, lower humidity and steady pressure. Winds shifting from WSW to ENE at 8 mph.
Thursday, September 10, 2026
Mid-Morning
60°F 15°C
Scattered Showers
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
74°F 23°C
Partly Cloudy
Warm with mostly cloudy skies in the morning, then partly sunny for the afternoon and evening, lower humidity and barometric pressure falling. Winds ESE at 19 mph.
Friday, September 11, 2026
Mid-Morning
64°F 18°C
Cloudy
Mid-Afternoon
96°F 36°C
Sunny
Early-Evening
90°F 32°C
Sunny
Hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and barometric pressure falling. Winds shifting from SE to W at 17 mph.
Saturday, September 12, 2026
Mid-Morning
71°F 21°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very warm with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from NW to NE at 9 mph.
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