Johnson Lake, SD 14 Day Weather
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Johnson Lake, SD Weather Forecast


Johnson Lake, SD Weather Forecast Dated: 610 AM Tue Sep 15 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and a stable pattern will dominate.
Tuesday, September 15, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
65°F 18°C
Sunny
Pleasant near 68°F 20°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds easing from NW 16 mph 26 km/h to NNW 4 mph 6 km/h.
Wednesday, September 16, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
61°F 16°C
Scattered Showers
Early-Evening
55°F 13°C
Overcast
Mildly cool near 61°F 16°C, scattered downpours possible, with increasing humidity and steady pressure. Winds switching from the SE to the S at 9 mph 14 km/h.
Thursday, September 17, 2026
Mid-Morning
57°F 14°C
Cloudy
Mid-Afternoon
76°F 25°C
Overcast
Early-Evening
74°F 23°C
Overcast
Enjoyable around 76°F 25°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds moving from the E to the SE at 11 mph 17 km/h.
Friday, September 18, 2026
Mid-Morning
65°F 18°C
Partly Cloudy
Mid-Afternoon
88°F 31°C
Overcast
Early-Evening
69°F 20°C
Overcast
Warm temperatures up to 88°F 31°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the SSE to the ENE at 9 mph 15 km/h.
Saturday, September 19, 2026
Mid-Morning
55°F 13°C
Fog
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
56°F 14°C
Scattered Showers
Refreshing around 60°F 16°C, scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the NNE to the ENE at 11 mph 17 km/h. Gusts up to 20 mph 32 km/h.
Sunday, September 20, 2026
Mid-Morning
54°F 12°C
Light Fog
Mid-Afternoon
61°F 16°C
Scattered Showers
Early-Evening
56°F 14°C
Scattered Showers
Mildly cool near 61°F 16°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the NE to the ENE at 9 mph 15 km/h.
Monday, September 21, 2026
Mid-Morning
51°F 11°C
Scattered Showers
Mid-Afternoon
53°F 12°C
Light Showers
Early-Evening
52°F 11°C
Scattered Showers
Chilly near 53°F 12°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the NE to the ENE at 8 mph 13 km/h.
Tuesday, September 22, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
67°F 20°C
Sunny
Cool with a high near 65°F 18°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds moving from the ESE to the SSE at 8 mph 13 km/h.
Wednesday, September 23, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
69°F 21°C
Sunny
Mild temperatures up to 71°F 22°C, sunny throughout the day, with lower humidity and steady pressure. Winds swinging from the SE to the SW at 5 mph 8 km/h.
Thursday, September 24, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
57°F 14°C
Sunny
Mildly cool near 61°F 16°C, cloudy in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds shifting from the NW to the N at 11 mph 18 km/h.
Friday, September 25, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
60°F 15°C
Sunny
Early-Evening
59°F 15°C
Sunny
Comfortable at 60°F 15°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNW to the SE at 7 mph 12 km/h.
Saturday, September 26, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
60°F 15°C
Sunny
Early-Evening
58°F 15°C
Sunny
Cool with a high near 60°F 15°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the NE to the E at 9 mph 14 km/h.
Sunday, September 27, 2026
Mid-Morning
49°F 10°C
Overcast
Mid-Afternoon
59°F 15°C
Cloudy
Early-Evening
62°F 17°C
Scattered Showers
Refreshing around 59°F 15°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds moving from the SE to the SSE at 12 mph 19 km/h. Gusts up to 25 mph 40 km/h.
Monday, September 28, 2026
Mid-Morning
36°F 2°C
Scattered Showers
Mid-Afternoon
42°F 6°C
Overcast
Early-Evening
39°F 4°C
Overcast
Biting cold near 42°F 6°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds blowing from the NNE at 18 mph 29 km/h. Gusts up to 22 mph 34 km/h.
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