Lyon School, SD 14 Day Weather
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Lyon School, SD Weather Forecast


Lyon School, SD Weather Forecast Dated: 946 AM Fri Sep 11 2026
Expect a mild stretch with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.
Friday, September 11, 2026
Mid-Morning
73°F 23°C
Overcast
Mid-Afternoon
93°F 34°C
Partly Cloudy
Early-Evening
82°F 28°C
Sunny
Very hot with temperatures reaching 93°F 34°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds turning from the S to the NNW at 20 mph 32 km/h. Gusts up to 30 mph 48 km/h.
Saturday, September 12, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
71°F 22°C
Overcast
Comfortable with temperatures reaching 72°F 22°C, overcast in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds switching from the N to the NE at 8 mph 12 km/h.
Sunday, September 13, 2026
Mid-Morning
54°F 12°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Light Showers
Early-Evening
57°F 14°C
Light Showers
Comfortable at 59°F 15°C, locally heavy downpours at times, with increasing humidity and barometric pressure falling. Winds moving from the E to the ESE at 15 mph 24 km/h. Gusts up to 28 mph 46 km/h.
Monday, September 14, 2026
Mid-Morning
58°F 14°C
Light Showers
Mid-Afternoon
73°F 23°C
Overcast
Early-Evening
73°F 23°C
Sunny
Mild temperatures up to 73°F 23°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds swinging from the SSE to the NW at 11 mph 18 km/h. Gusts up to 22 mph 36 km/h.
Tuesday, September 15, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
66°F 19°C
Sunny
Refreshing around 67°F 19°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds shifting from the NNW to the ESE at 7 mph 11 km/h.
Wednesday, September 16, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
53°F 12°C
Light Showers
Early-Evening
52°F 11°C
Scattered Showers
Cool and brisk at 53°F 12°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds turning from the NE to the N at 7 mph 12 km/h.
Thursday, September 17, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
67°F 20°C
Sunny
Comfortable at 66°F 19°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds switching from the E to the SSE at 10 mph 15 km/h.
Friday, September 18, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
81°F 27°C
Sunny
Early-Evening
81°F 28°C
Sunny
Quite warm around 81°F 27°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds moving from the SSW to the NNW at 7 mph 11 km/h.
Saturday, September 19, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
77°F 25°C
Sunny
Mild temperatures up to 75°F 24°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling.
Sunday, September 20, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
85°F 30°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very warm with a high of 85°F 30°C, sunny through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling. Winds increasing from the SSE at 9 mph 15 km/h to SSE at 18 mph 28 km/h. Gusts up to 29 mph 48 km/h.
Monday, September 21, 2026
Mid-Morning
72°F 22°C
Overcast
Mid-Afternoon
80°F 27°C
Overcast
Early-Evening
69°F 20°C
Overcast
Warm and summery near 80°F 27°C, overcast throughout the day, with increasing humidity and steady pressure. Winds shifting from the S to the SSE at 18 mph 29 km/h. Gusts up to 34 mph 54 km/h.
Tuesday, September 22, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
68°F 20°C
Sunny
Comfortable with temperatures reaching 70°F 21°C, overcast in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds turning from the N to the NNE at 8 mph 13 km/h.
Wednesday, September 23, 2026
Mid-Morning
49°F 10°C
Scattered Showers
Mid-Afternoon
47°F 9°C
Scattered Showers
Early-Evening
46°F 8°C
Light Showers
Brisk around 47°F 9°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds NE at 13 mph 21 km/h. Gusts up to 28 mph 45 km/h.
Thursday, September 24, 2026
Mid-Morning
44°F 7°C
Overcast
Mid-Afternoon
46°F 8°C
Overcast
Early-Evening
44°F 7°C
Scattered Showers
Cool and brisk at 46°F 8°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the NE to the N at 12 mph 18 km/h.
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