Foster, SD 14 Day Weather - WeatherWorld.com
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Foster, SD Weather Forecast


Foster, SD Weather Forecast Dated: 1006 PM Mon Sep 07 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Monday, September 7, 2026
Mid-Morning
70°F 21°C
Light Rain
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
78°F 26°C
Sunny
Pleasant near 79°F 26°C, early showers breaking for a drier afternoon, with lower humidity and barometric pressure falling. Winds turning from the SE to the S at 9 mph 14 km/h.
Tuesday, September 8, 2026
Mid-Morning
66°F 19°C
Overcast
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
79°F 26°C
Sunny
Balmy with temperatures reaching 82°F 28°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds blowing from the WNW at 18 mph 29 km/h.
Wednesday, September 9, 2026
Mid-Morning
60°F 15°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
77°F 25°C
Sunny
Enjoyable around 77°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the WNW to the NW at 10 mph 15 km/h.
Thursday, September 10, 2026
Mid-Morning
63°F 17°C
Partly Cloudy
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
85°F 29°C
Sunny
Warm temperatures up to 85°F 29°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds swinging from the SSW to the S at 9 mph 13 km/h.
Friday, September 11, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
60°F 16°C
Sunny
Mild with a high of 75°F 24°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the N to the NNW at 14 mph 22 km/h. Gusts up to 22 mph 36 km/h.
Saturday, September 12, 2026
Mid-Morning
50°F 10°C
Cloudy
Mid-Afternoon
66°F 19°C
Partly Cloudy
Early-Evening
66°F 19°C
Overcast
Mildly cool near 66°F 19°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling. Winds turning from the W to the ESE at 5 mph 9 km/h.
Sunday, September 13, 2026
Mid-Morning
55°F 13°C
Scattered Showers
Mid-Afternoon
56°F 13°C
Scattered Showers
Early-Evening
52°F 12°C
Overcast
Chilly near 56°F 13°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds out of the E at 15 mph 23 km/h. Gusts up to 26 mph 41 km/h.
Monday, September 14, 2026
Mid-Morning
53°F 12°C
Light Showers
Mid-Afternoon
60°F 16°C
Scattered Showers
Early-Evening
58°F 15°C
Scattered Showers
Cool with a high near 60°F 16°C, scattered downpours possible, with lower humidity and steady pressure. Winds building from SW at 4 mph 7 km/h to NW at 14 mph 22 km/h. Gusts up to 20 mph 32 km/h.
Tuesday, September 15, 2026
Mid-Morning
50°F 10°C
Partly Cloudy
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
62°F 17°C
Sunny
Refreshing around 64°F 18°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the WNW to the ESE at 11 mph 18 km/h.
Wednesday, September 16, 2026
Mid-Morning
49°F 9°C
Sunny
Mid-Afternoon
58°F 15°C
Sunny
Early-Evening
70°F 21°C
Sunny
Mildly cool near 58°F 15°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds shifting from the NNW to the SE at 7 mph 11 km/h.
Thursday, September 17, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
76°F 24°C
Sunny
Pleasant near 79°F 26°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the E to the ESE at 12 mph 19 km/h. Gusts up to 22 mph 36 km/h.
Friday, September 18, 2026
Mid-Morning
64°F 18°C
Scattered Showers
Mid-Afternoon
81°F 27°C
Cloudy
Early-Evening
73°F 23°C
Sunny
Balmy with temperatures reaching 81°F 27°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds increasing from the NNW at 3 mph 5 km/h to SE at 16 mph 25 km/h. Gusts up to 24 mph 39 km/h.
Saturday, September 19, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
57°F 14°C
Overcast
Brisk around 55°F 13°C, cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure rising. Winds moving from the N to the NNE at 10 mph 16 km/h.
Sunday, September 20, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
65°F 18°C
Partly Cloudy
Early-Evening
68°F 20°C
Sunny
Mildly cool near 65°F 18°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds blowing from the SSE at 19 mph 30 km/h. Gusts up to 31 mph 49 km/h.
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