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Halley Park, SD Weather Forecast
Halley Park, SD Weather Forecast Dated: 309 PM Mon Aug 31 2026 (Halley Park Time)
Expect a hot stretch with a mix of sun and clouds and mostly dry weather over the next two weeks. comfortable humidity and an unsettled pattern will dominate.
Monday, August 31, 2026
Mid-Morning
62°F 16°C
Sunny
Mid-Afternoon
83°F 28°C
Partly Cloudy
Early-Evening
80°F 27°C
Sunny
Very warm with mostly sunny skies in the morning, then partly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from S to NW at 10 mph 16 km/h.
Tuesday, September 1, 2026
Mid-Morning
69°F 20°C
Overcast
Mid-Afternoon
74°F 24°C
Sunny
Early-Evening
70°F 21°C
Sunny
Warm with mostly cloudy skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, increasing humidity and steady pressure. Winds SSE at 8 mph 13 km/h.
Wednesday, September 2, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
93°F 34°C
Cloudy
Early-Evening
79°F 26°C
Sunny
Hot with mostly cloudy skies, lower humidity and barometric pressure falling. Winds shifting from SSE to SSW at 11 mph 17 km/h.
Thursday, September 3, 2026
Mid-Morning
82°F 28°C
Sunny
Mid-Afternoon
92°F 33°C
Sunny
Early-Evening
81°F 27°C
Sunny
Hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and steady pressure. Winds shifting from W to WSW at 7 mph 11 km/h.
Friday, September 4, 2026
Mid-Morning
86°F 30°C
Sunny
Mid-Afternoon
98°F 36°C
Sunny
Early-Evening
88°F 31°C
Overcast
Hot with mostly sunny skies in the morning, mostly sunny in the afternoon, and mostly cloudy in the evening, steady humidity and steady pressure. Winds increasing from the SW at 5 mph 8 km/h to W at 15 mph 24 km/h.
Saturday, September 5, 2026
Mid-Morning
90°F 32°C
Sunny
Mid-Afternoon
99°F 37°C
Overcast
Early-Evening
87°F 31°C
Scattered Showers
Hot with overcast skies, steady humidity and steady pressure. Winds shifting from W to WSW at 7 mph 10 km/h.
Sunday, September 6, 2026
Mid-Morning
77°F 25°C
Overcast
Mid-Afternoon
73°F 23°C
Overcast
Early-Evening
71°F 22°C
Overcast
Warm with overcast skies, increasing humidity and steady pressure. Winds shifting from NW to WSW at 5 mph 8 km/h.
Monday, September 7, 2026
Mid-Morning
80°F 27°C
Sunny
Mid-Afternoon
98°F 37°C
Sunny
Early-Evening
90°F 32°C
Partly Cloudy
Hot with mostly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, steady humidity and barometric pressure falling. Winds shifting from S to W at 8 mph 13 km/h.
Tuesday, September 8, 2026
Mid-Morning
85°F 30°C
Sunny
Mid-Afternoon
99°F 37°C
Partly Cloudy
Early-Evening
86°F 30°C
Overcast
Hot with mostly sunny skies in the morning, partly sunny in the afternoon, and mostly cloudy in the evening, steady humidity and barometric pressure falling. Winds shifting from SE to S at 6 mph 9 km/h.
Wednesday, September 9, 2026
Mid-Morning
83°F 28°C
Scattered Showers
Mid-Afternoon
97°F 36°C
Partly Cloudy
Early-Evening
77°F 25°C
Overcast
Hot with mostly cloudy skies in the morning, mostly sunny in the afternoon, and mostly cloudy in the evening, increasing humidity and steady pressure. Winds increasing from the SSE at 4 mph 6 km/h to W at 14 mph 22 km/h.
Thursday, September 10, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
76°F 24°C
Cloudy
Early-Evening
66°F 19°C
Partly Cloudy
Warm with mostly cloudy skies, lower humidity and barometric pressure rising. Winds decreasing from WSW 23 mph 37 km/h to WSW 6 mph 10 km/h.
Friday, September 11, 2026
Mid-Morning
67°F 20°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
78°F 26°C
Sunny
Very warm with mostly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, steady humidity and barometric pressure falling. Winds increasing from the S at 7 mph 11 km/h to SSW at 17 mph 27 km/h.
Saturday, September 12, 2026
Mid-Morning
76°F 25°C
Sunny
Mid-Afternoon
89°F 32°C
Overcast
Early-Evening
79°F 26°C
Overcast
Very warm with overcast skies, steady humidity and steady pressure. Winds shifting from ENE to W at 9 mph 14 km/h.
Sunday, September 13, 2026
Mid-Morning
83°F 28°C
Overcast
Mid-Afternoon
95°F 35°C
Partly Cloudy
Early-Evening
84°F 29°C
Sunny
Hot with mostly cloudy skies in the morning, partly sunny in the afternoon, and mostly sunny in the evening, steady humidity and steady pressure. Winds SSE at 16 mph 26 km/h.
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