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Sweeney SD Weather - Clear - 62°F
Clear
62°F
Updated 11:29 am
Feels Like 52°F
Humidity 62%
Wind NW 9 mph
Barometer  30.19 in
Dew Point 49°F
Sweeney SD Weather - Clear - 17°C
Clear
17°C
Updated 11:29 am
Feels Like 11°C
Humidity 62%
Wind NW 14 km/h
Barometer  102.2 kPa
Dew Point 9°C
Sweeney, SD Weather and Current Conditionssweeney sd weather forecast

Sweeney, SD Weather Forecast

Sweeney South Dakota WeatherSweeney, South Dakota Weather Weather Forecast
14 day API weather forecast for Sweeney, South Dakota. Note: The 7-day weather forecast for Sweeney, SD 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.
Sweeney, SD Weather Forecast Dated: 1129 AM Tue Sep 15 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Tuesday, September 15, 2026

Mid-Morning
Sweeney Weather - 2026-09-15 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Sweeney Weather - 2026-09-15 - Afternoon - Sunny
69°F 20°C
Sunny
Early-Evening
Sweeney Weather - 2026-09-15 - Evening - Sunny
70°F 21°C
Sunny
Pleasant near 69°F 20°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NW to the E at 6 mph 9 km/h.

Wednesday, September 16, 2026

Mid-Morning
Sweeney Weather - 2026-09-16 - Morning - Overcast
56°F 13°C
Overcast
Mid-Afternoon
Sweeney Weather - 2026-09-16 - Afternoon - Cloudy
70°F 21°C
Cloudy
Early-Evening
Sweeney Weather - 2026-09-16 - Evening - Overcast
71°F 21°C
Overcast
Comfortable with temperatures reaching 70°F 21°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SE to the ESE at 14 mph 21 km/h. Gusts up to 21 mph 33 km/h.

Thursday, September 17, 2026

Mid-Morning
Sweeney Weather - 2026-09-17 - Morning - Light Showers
61°F 16°C
Light Showers
Mid-Afternoon
Sweeney Weather - 2026-09-17 - Afternoon - Scattered Showers
64°F 18°C
Scattered Showers
Early-Evening
Sweeney Weather - 2026-09-17 - Evening - Light Showers
64°F 18°C
Light Showers
Comfortable at 64°F 18°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds E at 15 mph 24 km/h. Gusts up to 33 mph 54 km/h.

Friday, September 18, 2026

Mid-Morning
Sweeney Weather - 2026-09-18 - Morning - Light Fog
61°F 16°C
Light Fog
Mid-Afternoon
Sweeney Weather - 2026-09-18 - Afternoon - Overcast
63°F 17°C
Overcast
Early-Evening
Sweeney Weather - 2026-09-18 - Evening - Scattered Showers
60°F 15°C
Scattered Showers
Cool with a high near 63°F 17°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the NNW at 9 mph 14 km/h.

Saturday, September 19, 2026

Mid-Morning
Sweeney Weather - 2026-09-19 - Morning - Overcast
54°F 12°C
Overcast
Mid-Afternoon
Sweeney Weather - 2026-09-19 - Afternoon - Scattered Showers
60°F 16°C
Scattered Showers
Early-Evening
Sweeney Weather - 2026-09-19 - Evening - Overcast
60°F 15°C
Overcast
Refreshing around 60°F 16°C, scattered downpours possible, with lower humidity and steady pressure. Winds shifting from the NNE to the NE at 9 mph 14 km/h.

Sunday, September 20, 2026

Mid-Morning
Sweeney Weather - 2026-09-20 - Morning - Overcast
55°F 13°C
Overcast
Mid-Afternoon
Sweeney Weather - 2026-09-20 - Afternoon - Overcast
62°F 17°C
Overcast
Early-Evening
Sweeney Weather - 2026-09-20 - Evening - Scattered Showers
58°F 15°C
Scattered Showers
Mildly cool near 62°F 17°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the NNE to the ENE at 9 mph 14 km/h.

Monday, September 21, 2026

Mid-Morning
Sweeney Weather - 2026-09-21 - Morning - Overcast
52°F 11°C
Overcast
Mid-Afternoon
Sweeney Weather - 2026-09-21 - Afternoon - Partly Cloudy
60°F 16°C
Partly Cloudy
Early-Evening
Sweeney Weather - 2026-09-21 - Evening - Sunny
55°F 12°C
Sunny
Comfortable at 60°F 16°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds switching from the NNE to the ENE at 11 mph 18 km/h.

Tuesday, September 22, 2026

Mid-Morning
Sweeney Weather - 2026-09-22 - Morning - Light Fog
49°F 10°C
Light Fog
Mid-Afternoon
Sweeney Weather - 2026-09-22 - Afternoon - Sunny
67°F 19°C
Sunny
Early-Evening
Sweeney Weather - 2026-09-22 - Evening - Overcast
67°F 20°C
Overcast
Cool with a high near 67°F 19°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling. Winds moving from the SE to the ESE at 13 mph 21 km/h. Gusts up to 23 mph 37 km/h.

Wednesday, September 23, 2026

Mid-Morning
Sweeney Weather - 2026-09-23 - Morning - Partly Cloudy
54°F 12°C
Partly Cloudy
Mid-Afternoon
Sweeney Weather - 2026-09-23 - Afternoon - Sunny
64°F 18°C
Sunny
Early-Evening
Sweeney Weather - 2026-09-23 - Evening - Sunny
66°F 19°C
Sunny
Refreshing around 64°F 18°C, sunny throughout the day, with lower humidity and steady pressure. Winds decreasing from NNW 19 mph 31 km/h to WNW 10 mph 16 km/h.

Thursday, September 24, 2026

Mid-Morning
Sweeney Weather - 2026-09-24 - Morning - Sunny
56°F 14°C
Sunny
Mid-Afternoon
Sweeney Weather - 2026-09-24 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Sweeney Weather - 2026-09-24 - Evening - Sunny
72°F 22°C
Sunny
Mild with a high of 73°F 23°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds picking up from SE at 8 mph 12 km/h to ESE at 17 mph 26 km/h. Gusts up to 29 mph 46 km/h.

Friday, September 25, 2026

Mid-Morning
Sweeney Weather - 2026-09-25 - Morning - Sunny
67°F 19°C
Sunny
Mid-Afternoon
Sweeney Weather - 2026-09-25 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Sweeney Weather - 2026-09-25 - Evening - Sunny
84°F 29°C
Sunny
Warm and summery near 83°F 28°C, sunny throughout the day, with lower humidity and steady pressure.

Saturday, September 26, 2026

Mid-Morning
Sweeney Weather - 2026-09-26 - Morning - Sunny
71°F 22°C
Sunny
Mid-Afternoon
Sweeney Weather - 2026-09-26 - Afternoon - Overcast
93°F 34°C
Overcast
Early-Evening
Sweeney Weather - 2026-09-26 - Evening - Overcast
93°F 34°C
Overcast
Hot and sweltering around 93°F 34°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the SE to the SSE at 16 mph 26 km/h. Gusts up to 29 mph 47 km/h.

Sunday, September 27, 2026

Mid-Morning
Sweeney Weather - 2026-09-27 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Sweeney Weather - 2026-09-27 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Sweeney Weather - 2026-09-27 - Evening - Sunny
70°F 21°C
Sunny
Sizzling hot with 91°F 33°C, sunny throughout the day, with steady humidity and barometric pressure rising. Winds increasing from the SW at 13 mph 20 km/h to NW at 32 mph 52 km/h. Gusts up to 45 mph 72 km/h.

Monday, September 28, 2026

Mid-Morning
Sweeney Weather - 2026-09-28 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Sweeney Weather - 2026-09-28 - Afternoon - Sunny
62°F 17°C
Sunny
Early-Evening
Sweeney Weather - 2026-09-28 - Evening - Sunny
61°F 16°C
Sunny
Mildly cool near 62°F 17°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the WNW to the SE at 10 mph 16 km/h.

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Weather by the Numbers

Tue, 15th
Sweeney SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 72°F 22°C
Lo: 54°F 12°C
Sunrise 07:20 AM
Sunset 07:50 PM
Wind NNW 10 mph15 km/h
Dew Point 38°F3°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 39%
Wed, 16th
Sweeney SD Weather - Wednesday, Sep 16, 2026 - Patchy Rain Nearby
Hi: 76°F 24°C
Lo: 56°F 13°C
Sunrise 07:21 AM
Sunset 07:49 PM
Wind SSE 19 mph30 km/h
Dew Point 44°F7°C
uv Index 0
Barometric Pressure 30.15 in1021 mb
POP 7% *
Humidity 55%
Thu, 17th
Sweeney SD Weather - Thursday, Sep 17, 2026 - Light Rain Shower
Hi: 68°F 20°C
Lo: 60°F 16°C
Sunrise 07:22 AM
Sunset 07:47 PM
Wind E 9 mph15 km/h
Dew Point 61°F16°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 79% *
Humidity 97%
Fri, 18th
Sweeney SD Weather - Friday, Sep 18, 2026 - Patchy Rain Nearby
Hi: 63°F 17°C
Lo: 56°F 13°C
Sunrise 07:23 AM
Sunset 07:45 PM
Wind N 6 mph10 km/h
Dew Point 60°F16°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 32% *
Humidity 92%
Sat, 19th
Sweeney SD Weather - Saturday, Sep 19, 2026 - Cloudy
Hi: 63°F 17°C
Lo: 54°F 12°C
Sunrise 07:24 AM
Sunset 07:43 PM
Wind NNE 8 mph13 km/h
Dew Point 52°F11°C
uv Index 3
Barometric Pressure 29.94 in1014 mb
POP 19% *
Humidity 82%
Sun, 20th
Sweeney SD Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 63°F 17°C
Lo: 54°F 12°C
Sunrise 07:26 AM
Sunset 07:41 PM
Wind NE 5 mph8 km/h
Dew Point 51°F11°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 19% *
Humidity 72%
Mon, 21st
Sweeney SD Weather - Monday, Sep 21, 2026 - Overcast
Hi: 63°F 17°C
Lo: 48°F 9°C
Sunrise 07:27 AM
Sunset 07:39 PM
Wind NNE 7 mph11 km/h
Dew Point 44°F7°C
uv Index 3
Barometric Pressure 30.06 in1018 mb
POP 13% *
Humidity 71%
Tue, 22nd
Sweeney SD Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 69°F 21°C
Lo: 48°F 9°C
Sunrise 07:28 AM
Sunset 07:38 PM
Wind SE 11 mph17 km/h
Dew Point 44°F7°C
uv Index 3
Barometric Pressure 29.94 in1014 mb
POP 6% *
Humidity 61%
Wed, 23rd
Sweeney SD Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 67°F 19°C
Lo: 53°F 12°C
Sunrise 07:29 AM
Sunset 07:36 PM
Wind NW 18 mph28 km/h
Dew Point 33°F1°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 1% *
Humidity 38%
Thu, 24th
Sweeney SD Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 76°F 24°C
Lo: 56°F 13°C
Sunrise 07:30 AM
Sunset 07:34 PM
Wind SE 11 mph18 km/h
Dew Point 29°F-2°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 0% *
Humidity 27%
Fri, 25th
Sweeney SD Weather - Friday, Sep 25, 2026 - Sunny
Hi: 87°F 30°C
Lo: 66°F 19°C
Sunrise 07:31 AM
Sunset 07:32 PM
Wind NNW 5 mph8 km/h
Dew Point 43°F6°C
uv Index 6
Barometric Pressure 29.74 in1007 mb
POP 1% *
Humidity 33%
Sat, 26th
Sweeney SD Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 95°F 35°C
Lo: 70°F 21°C
Sunrise 07:32 AM
Sunset 07:30 PM
Wind SSE 13 mph22 km/h
Dew Point 46°F8°C
uv Index 7
Barometric Pressure 29.68 in1005 mb
POP 5% *
Humidity 29%
Sun, 27th
Sweeney SD Weather - Sunday, Sep 27, 2026 - Sunny
Hi: 91°F 33°C
Lo: 53°F 12°C
Sunrise 07:34 AM
Sunset 07:28 PM
Wind WSW 15 mph25 km/h
Dew Point 43°F6°C
uv Index 7
Barometric Pressure 29.5 in999 mb
POP 0% *
Humidity 23%
Mon, 28th
Sweeney SD Weather - Monday, Sep 28, 2026 - Sunny
Hi: 63°F 17°C
Lo: 51°F 10°C
Sunrise 07:35 AM
Sunset 07:27 PM
Wind NW 17 mph28 km/h
Dew Point 25°F-4°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 1% *
Humidity 27%
* POP = Probability of Precipitation. Data for 12:00 PM.