Round Lake, SD 14 Day Weather

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Round Lake, SD Weather - 14-Day Weather Forecast

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Round Lake SD Weather - Clear - 66°F
Clear
66°F
Updated 2:52 am
Feels Like 61°F
Humidity 68%
Wind SSE 8 mph
Barometer  29.76 in
Dew Point 55°F
Round Lake SD Weather - Clear - 19°C
Clear
19°C
Updated 2:52 am
Feels Like 16°C
Humidity 68%
Wind SSE 13 km/h
Barometer  100.7 kPa
Dew Point 13°C
Round Lake, SD Weather and Current Conditionsround lake sd weather forecast

Round Lake, SD Weather Forecast

Round Lake South Dakota WeatherRound Lake, South Dakota Weather Weather Forecast
14 day API weather forecast for Round Lake. Note: The 7-day Round Lake weather forecast is the most reliable and accurate weather forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days ahead.
Round Lake, SD Weather Forecast Dated: 252 AM Fri Sep 11 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 11, 2026

Mid-Morning
Round Lake Weather - 2026-09-11 - Morning - Overcast
72°F 22°C
Overcast
Mid-Afternoon
Round Lake Weather - 2026-09-11 - Afternoon - Nearby Thunderstorms
93°F 34°C
Nearby Thunderstorms
Early-Evening
Round Lake Weather - 2026-09-11 - Evening - Sunny
84°F 29°C
Sunny
Very hot with temperatures reaching 93°F 34°C, periods of heavy thunderstorms, with lower humidity and barometric pressure falling. Winds turning from the S to the N at 18 mph 28 km/h. Gusts up to 27 mph 44 km/h.

Saturday, September 12, 2026

Mid-Morning
Round Lake Weather - 2026-09-12 - Morning - Overcast
57°F 14°C
Overcast
Mid-Afternoon
Round Lake Weather - 2026-09-12 - Afternoon - Partly Cloudy
70°F 21°C
Partly Cloudy
Early-Evening
Round Lake Weather - 2026-09-12 - Evening - Overcast
66°F 19°C
Overcast
Comfortable with temperatures reaching 70°F 21°C, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds switching from the NNW to the N at 10 mph 17 km/h.

Sunday, September 13, 2026

Mid-Morning
Round Lake Weather - 2026-09-13 - Morning - Overcast
53°F 11°C
Overcast
Mid-Afternoon
Round Lake Weather - 2026-09-13 - Afternoon - Overcast
61°F 16°C
Overcast
Early-Evening
Round Lake Weather - 2026-09-13 - Evening - Overcast
61°F 16°C
Overcast
Comfortable at 61°F 16°C, overcast throughout the day, with steady humidity and steady pressure.

Monday, September 14, 2026

Mid-Morning
Round Lake Weather - 2026-09-14 - Morning - Light Showers
52°F 11°C
Light Showers
Mid-Afternoon
Round Lake Weather - 2026-09-14 - Afternoon - Light Showers
57°F 14°C
Light Showers
Early-Evening
Round Lake Weather - 2026-09-14 - Evening - Light Fog
63°F 17°C
Light Fog
Crisp with a high near 57°F 14°C, intermittent showers through midday, easing by evening, with steady humidity and barometric pressure falling. Winds decreasing from SE 19 mph 30 km/h to WSW 7 mph 11 km/h.

Tuesday, September 15, 2026

Mid-Morning
Round Lake Weather - 2026-09-15 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Round Lake Weather - 2026-09-15 - Afternoon - Sunny
68°F 20°C
Sunny
Early-Evening
Round Lake Weather - 2026-09-15 - Evening - Partly Cloudy
65°F 18°C
Partly Cloudy
Mild with a high of 68°F 20°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds easing from NW 15 mph 23 km/h to SE 7 mph 10 km/h.

Wednesday, September 16, 2026

Mid-Morning
Round Lake Weather - 2026-09-16 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Round Lake Weather - 2026-09-16 - Afternoon - Sunny
64°F 18°C
Sunny
Early-Evening
Round Lake Weather - 2026-09-16 - Evening - Overcast
54°F 13°C
Overcast
Mildly cool near 64°F 18°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds shifting from the NW to the WNW at 11 mph 19 km/h.

Thursday, September 17, 2026

Mid-Morning
Round Lake Weather - 2026-09-17 - Morning - Sunny
47°F 8°C
Sunny
Mid-Afternoon
Round Lake Weather - 2026-09-17 - Afternoon - Sunny
63°F 17°C
Sunny
Early-Evening
Round Lake Weather - 2026-09-17 - Evening - Sunny
62°F 17°C
Sunny
Comfortable at 63°F 17°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SE to the SSE at 8 mph 12 km/h.

Friday, September 18, 2026

Mid-Morning
Round Lake Weather - 2026-09-18 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Round Lake Weather - 2026-09-18 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Round Lake Weather - 2026-09-18 - Evening - Sunny
75°F 24°C
Sunny
Quite warm around 82°F 28°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds switching from the SSW to the NNE at 14 mph 23 km/h. Gusts up to 24 mph 38 km/h.

Saturday, September 19, 2026

Mid-Morning
Round Lake Weather - 2026-09-19 - Morning - Sunny
56°F 13°C
Sunny
Mid-Afternoon
Round Lake Weather - 2026-09-19 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Round Lake Weather - 2026-09-19 - Evening - Sunny
70°F 21°C
Sunny
Mild temperatures up to 72°F 22°C, sunny through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling.

Sunday, September 20, 2026

Mid-Morning
Round Lake Weather - 2026-09-20 - Morning - Overcast
62°F 17°C
Overcast
Mid-Afternoon
Round Lake Weather - 2026-09-20 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Round Lake Weather - 2026-09-20 - Evening - Sunny
80°F 27°C
Sunny
Very warm with a high of 82°F 28°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds moving from the SSE to the SE at 11 mph 17 km/h. Gusts up to 22 mph 35 km/h.

Monday, September 21, 2026

Mid-Morning
Round Lake Weather - 2026-09-21 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Round Lake Weather - 2026-09-21 - Afternoon - Overcast
87°F 31°C
Overcast
Early-Evening
Round Lake Weather - 2026-09-21 - Evening - Overcast
80°F 27°C
Overcast
Warm and summery near 87°F 31°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the S at 23 mph 36 km/h. Gusts up to 36 mph 58 km/h.

Tuesday, September 22, 2026

Mid-Morning
Round Lake Weather - 2026-09-22 - Morning - Scattered Showers
59°F 15°C
Scattered Showers
Mid-Afternoon
Round Lake Weather - 2026-09-22 - Afternoon - Overcast
70°F 21°C
Overcast
Early-Evening
Round Lake Weather - 2026-09-22 - Evening - Sunny
65°F 19°C
Sunny
Comfortable with temperatures reaching 70°F 21°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds out of the NNW at 9 mph 14 km/h. Gusts up to 21 mph 34 km/h.

Wednesday, September 23, 2026

Mid-Morning
Round Lake Weather - 2026-09-23 - Morning - Scattered Showers
51°F 11°C
Scattered Showers
Mid-Afternoon
Round Lake Weather - 2026-09-23 - Afternoon - Light Showers
49°F 10°C
Light Showers
Early-Evening
Round Lake Weather - 2026-09-23 - Evening - Scattered Showers
47°F 8°C
Scattered Showers
Brisk around 49°F 10°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure rising. Winds turning from the ESE to the NNE at 8 mph 13 km/h.

Thursday, September 24, 2026

Mid-Morning
Round Lake Weather - 2026-09-24 - Morning - Light Showers
42°F 6°C
Light Showers
Mid-Afternoon
Round Lake Weather - 2026-09-24 - Afternoon - Scattered Showers
42°F 6°C
Scattered Showers
Early-Evening
Round Lake Weather - 2026-09-24 - Evening - Scattered Showers
41°F 5°C
Scattered Showers
Biting cold near 42°F 6°C, scattered downpours possible, with steady humidity and steady pressure. Winds switching from the NNE to the NE at 10 mph 16 km/h.

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Weather by the Numbers

Fri, 11th
Round Lake SD Weather - Friday, Sep 11, 2026 - Overcast
Hi: 97°F 36°C
Lo: 66°F 19°C
Sunrise 07:00 AM
Sunset 07:46 PM
Wind S 12 mph19 km/h
Dew Point 53°F12°C
uv Index 5
Barometric Pressure 29.59 in1002 mb
POP 9% *
Humidity 33%
Sat, 12th
Round Lake SD Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 70°F 21°C
Lo: 53°F 12°C
Sunrise 07:02 AM
Sunset 07:44 PM
Wind NNW 15 mph23 km/h
Dew Point 35°F2°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 10% *
Humidity 32%
Sun, 13th
Round Lake SD Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 63°F 17°C
Lo: 52°F 11°C
Sunrise 07:03 AM
Sunset 07:42 PM
Wind E 2 mph3 km/h
Dew Point 33°F1°C
uv Index 1
Barometric Pressure 30.18 in1022 mb
POP 10% *
Humidity 43%
Mon, 14th
Round Lake SD Weather - Monday, Sep 14, 2026 - Patchy Rain Nearby
Hi: 65°F 19°C
Lo: 52°F 11°C
Sunrise 07:04 AM
Sunset 07:40 PM
Wind SSE 14 mph23 km/h
Dew Point 52°F11°C
uv Index 1
Barometric Pressure 29.8 in1009 mb
POP 35% *
Humidity 94%
Tue, 15th
Round Lake SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 70°F 21°C
Lo: 49°F 10°C
Sunrise 07:05 AM
Sunset 07:38 PM
Wind NNW 13 mph22 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 35%
Wed, 16th
Round Lake SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 65°F 18°C
Lo: 47°F 8°C
Sunrise 07:07 AM
Sunset 07:36 PM
Wind NW 11 mph18 km/h
Dew Point 28°F-2°C
uv Index 5
Barometric Pressure 30.33 in1027 mb
POP 1% *
Humidity 31%
Thu, 17th
Round Lake SD Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 65°F 18°C
Lo: 42°F 6°C
Sunrise 07:08 AM
Sunset 07:34 PM
Wind SE 2 mph3 km/h
Dew Point 30°F-1°C
uv Index 4
Barometric Pressure 30.45 in1031 mb
POP 1% *
Humidity 37%
Fri, 18th
Round Lake SD Weather - Friday, Sep 18, 2026 - Sunny
Hi: 84°F 29°C
Lo: 53°F 12°C
Sunrise 07:09 AM
Sunset 07:32 PM
Wind SW 9 mph14 km/h
Dew Point 50°F10°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 41%
Sat, 19th
Round Lake SD Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 74°F 23°C
Lo: 52°F 11°C
Sunrise 07:10 AM
Sunset 07:30 PM
Wind NNE 6 mph10 km/h
Dew Point 42°F6°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 44%
Sun, 20th
Round Lake SD Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 84°F 29°C
Lo: 56°F 13°C
Sunrise 07:12 AM
Sunset 07:28 PM
Wind SSE 9 mph14 km/h
Dew Point 44°F7°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 34%
Mon, 21st
Round Lake SD Weather - Monday, Sep 21, 2026 - Overcast
Hi: 87°F 31°C
Lo: 65°F 18°C
Sunrise 07:13 AM
Sunset 07:26 PM
Wind S 23 mph37 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 29.65 in1004 mb
POP 9% *
Humidity 31%
Tue, 22nd
Round Lake SD Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 72°F 22°C
Lo: 58°F 14°C
Sunrise 07:14 AM
Sunset 07:24 PM
Wind NNW 9 mph14 km/h
Dew Point 41°F5°C
uv Index 4
Barometric Pressure 29.77 in1008 mb
POP 11% *
Humidity 45%
Wed, 23rd
Round Lake SD Weather - Wednesday, Sep 23, 2026 - Patchy Rain Nearby
Hi: 57°F 14°C
Lo: 46°F 8°C
Sunrise 07:15 AM
Sunset 07:22 PM
Wind N 8 mph12 km/h
Dew Point 43°F6°C
uv Index 2
Barometric Pressure 30.12 in1020 mb
POP 31% *
Humidity 77%
Thu, 24th
Round Lake SD Weather - Thursday, Sep 24, 2026 - Light Rain Shower
Hi: 46°F 8°C
Lo: 41°F 5°C
Sunrise 07:17 AM
Sunset 07:20 PM
Wind NE 14 mph22 km/h
Dew Point 39°F4°C
uv Index 2
Barometric Pressure 30.3 in1026 mb
POP 55% *
Humidity 87%
* POP = Probability of Precipitation. Data for 12:00 PM.