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Thompson School, SD Weather Forecast
Thompson School, SD Weather Forecast Dated: 154 PM Fri Sep 18 2026
Expect a cool pattern with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, September 18, 2026
Mid-Morning
61°F 16°C
Scattered Showers
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
63°F 17°C
Scattered Showers
Refreshing around 66°F 19°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds out of the E at 6 mph 10 km/h.
Saturday, September 19, 2026
Mid-Morning
60°F 16°C
Scattered Showers
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
61°F 17°C
Scattered Showers
Mildly cool near 64°F 18°C, scattered downpours possible, with steady humidity and steady pressure. Winds switching from the E to the ENE at 11 mph 17 km/h.
Sunday, September 20, 2026
Mid-Morning
57°F 14°C
Light Showers
Mid-Afternoon
56°F 13°C
Scattered Showers
Early-Evening
55°F 13°C
Light Showers
Chilly near 56°F 13°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the ESE to the E at 10 mph 16 km/h. Gusts up to 20 mph 32 km/h.
Monday, September 21, 2026
Mid-Morning
55°F 13°C
Scattered Showers
Mid-Afternoon
57°F 14°C
Scattered Showers
Early-Evening
55°F 13°C
Overcast
Crisp with a high near 57°F 14°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds swinging from the E to the SE at 11 mph 18 km/h.
Tuesday, September 22, 2026
Mid-Morning
56°F 13°C
Cloudy
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
61°F 16°C
Overcast
Refreshing around 64°F 18°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds shifting from the SE to the ESE at 15 mph 24 km/h. Gusts up to 26 mph 41 km/h.
Wednesday, September 23, 2026
Mid-Morning
61°F 16°C
Cloudy
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
71°F 22°C
Partly Cloudy
Pleasant near 79°F 26°C, cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds SE at 9 mph 14 km/h.
Thursday, September 24, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
80°F 26°C
Sunny
Early-Evening
72°F 22°C
Overcast
Balmy with temperatures reaching 80°F 26°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds out of the SE at 12 mph 19 km/h. Gusts up to 24 mph 39 km/h.
Friday, September 25, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
78°F 25°C
Sunny
Early-Evening
71°F 22°C
Overcast
Enjoyable around 78°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds blowing from the SSE at 21 mph 34 km/h. Gusts up to 30 mph 49 km/h.
Saturday, September 26, 2026
Mid-Morning
64°F 18°C
Partly Cloudy
Mid-Afternoon
73°F 23°C
Overcast
Early-Evening
78°F 26°C
Overcast
Mild temperatures up to 73°F 23°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds swinging from the N to the S at 10 mph 16 km/h. Gusts up to 20 mph 32 km/h.
Sunday, September 27, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
69°F 21°C
Overcast
Mild with a high of 75°F 24°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the NW to the E at 6 mph 10 km/h.
Monday, September 28, 2026
Mid-Morning
57°F 14°C
Scattered Showers
Mid-Afternoon
69°F 20°C
Partly Cloudy
Early-Evening
63°F 17°C
Sunny
Pleasant near 69°F 20°C, scattered downpours possible, with lower humidity and steady pressure. Winds turning from the NNW to the NW at 11 mph 17 km/h. Gusts up to 20 mph 32 km/h.
Tuesday, September 29, 2026
Mid-Morning
51°F 11°C
Partly Cloudy
Mid-Afternoon
57°F 14°C
Cloudy
Early-Evening
49°F 10°C
Overcast
Crisp with a high near 57°F 14°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure rising. Winds switching from the WNW to the NW at 18 mph 28 km/h. Gusts up to 26 mph 41 km/h.
Wednesday, September 30, 2026
Mid-Morning
46°F 8°C
Overcast
Mid-Afternoon
47°F 8°C
Scattered Showers
Early-Evening
47°F 8°C
Overcast
Brisk around 47°F 8°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the NNW to the NW at 9 mph 15 km/h.
Thursday, October 1, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
54°F 12°C
Sunny
Mildly cool near 59°F 15°C, sunny throughout the day, with lower humidity and barometric pressure falling.
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