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Erwin SD Weather - Clear - 68°F
Clear
68°F
Updated 9:50 pm
Feels Like 69°F
Humidity 100%
Wind ESE 10 mph
Barometer  30.01 in
Dew Point 68°F
Erwin SD Weather - Clear - 20°C
Clear
20°C
Updated 9:50 pm
Feels Like 21°C
Humidity 100%
Wind ESE 16 km/h
Barometer  101.6 kPa
Dew Point 20°C
Erwin, SD Weather and Current Conditionserwin sd weather forecast

Erwin, SD Weather Forecast

Erwin South Dakota WeatherErwin, South Dakota Weather Weather Forecast
14 day API weather forecast for Erwin, South Dakota. Note: The 7-day weather forecast for Erwin, 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.
Erwin, SD Weather Forecast Dated: 950 PM Sun Sep 06 2026
Expect a mild stretch with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.

Sunday, September 6, 2026

Mid-Morning
Erwin Weather - 2026-09-06 - Morning - Cloudy
77°F 25°C
Cloudy
Mid-Afternoon
Erwin Weather - 2026-09-06 - Afternoon - Drizzle
74°F 24°C
Drizzle
Early-Evening
Erwin Weather - 2026-09-06 - Evening - Rain
73°F 23°C
Rain
Pleasant near 74°F 24°C, drier morning followed by showers lasting through evening, with lower humidity and steady pressure. Winds out of the SSE at 10 mph 16 km/h.

Monday, September 7, 2026

Mid-Morning
Erwin Weather - 2026-09-07 - Morning - Overcast
64°F 18°C
Overcast
Mid-Afternoon
Erwin Weather - 2026-09-07 - Afternoon - Overcast
80°F 27°C
Overcast
Early-Evening
Erwin Weather - 2026-09-07 - Evening - Nearby Thunderstorms
80°F 27°C
Nearby Thunderstorms
Balmy with temperatures reaching 80°F 27°C, locally heavy thunderstorms at times, with lower humidity and barometric pressure falling. Winds blowing from the SSE at 21 mph 34 km/h. Gusts up to 34 mph 54 km/h.

Tuesday, September 8, 2026

Mid-Morning
Erwin Weather - 2026-09-08 - Morning - Cloudy
69°F 20°C
Cloudy
Mid-Afternoon
Erwin Weather - 2026-09-08 - Afternoon - Overcast
81°F 27°C
Overcast
Early-Evening
Erwin Weather - 2026-09-08 - Evening - Sunny
79°F 26°C
Sunny
Quite warm around 81°F 27°C, overcast through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds moving from the SW to the WNW at 9 mph 15 km/h.

Wednesday, September 9, 2026

Mid-Morning
Erwin Weather - 2026-09-09 - Morning - Sunny
60°F 16°C
Sunny
Mid-Afternoon
Erwin Weather - 2026-09-09 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Erwin Weather - 2026-09-09 - Evening - Sunny
71°F 22°C
Sunny
Mild temperatures up to 73°F 23°C, sunny throughout the day, with lower humidity and steady pressure. Winds out of the NW at 16 mph 26 km/h.

Thursday, September 10, 2026

Mid-Morning
Erwin Weather - 2026-09-10 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Erwin Weather - 2026-09-10 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Erwin Weather - 2026-09-10 - Evening - Sunny
77°F 25°C
Sunny
Mild with a high of 79°F 26°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds shifting from the S to the SE at 9 mph 14 km/h.

Friday, September 11, 2026

Mid-Morning
Erwin Weather - 2026-09-11 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Erwin Weather - 2026-09-11 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Erwin Weather - 2026-09-11 - Evening - Sunny
76°F 24°C
Sunny
Pleasant near 78°F 26°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure rising. Winds turning from the NNE to the ESE at 10 mph 16 km/h.

Saturday, September 12, 2026

Mid-Morning
Erwin Weather - 2026-09-12 - Morning - Partly Cloudy
63°F 17°C
Partly Cloudy
Mid-Afternoon
Erwin Weather - 2026-09-12 - Afternoon - Sunny
76°F 25°C
Sunny
Early-Evening
Erwin Weather - 2026-09-12 - Evening - Cloudy
74°F 23°C
Cloudy
Comfortable with temperatures reaching 76°F 25°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds switching from the SE to the E at 16 mph 26 km/h. Gusts up to 28 mph 44 km/h.

Sunday, September 13, 2026

Mid-Morning
Erwin Weather - 2026-09-13 - Morning - Light Showers
57°F 14°C
Light Showers
Mid-Afternoon
Erwin Weather - 2026-09-13 - Afternoon - Cloudy
66°F 19°C
Cloudy
Early-Evening
Erwin Weather - 2026-09-13 - Evening - Scattered Showers
61°F 16°C
Scattered Showers
Cool with a high near 66°F 19°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the ENE to the SW at 8 mph 13 km/h.

Monday, September 14, 2026

Mid-Morning
Erwin Weather - 2026-09-14 - Morning - Overcast
48°F 9°C
Overcast
Mid-Afternoon
Erwin Weather - 2026-09-14 - Afternoon - Overcast
56°F 13°C
Overcast
Early-Evening
Erwin Weather - 2026-09-14 - Evening - Overcast
54°F 12°C
Overcast
Brisk around 56°F 13°C, overcast throughout the day, with lower humidity and steady pressure. Winds swinging from the NNE to the E at 9 mph 13 km/h.

Tuesday, September 15, 2026

Mid-Morning
Erwin Weather - 2026-09-15 - Morning - Light Fog
52°F 11°C
Light Fog
Mid-Afternoon
Erwin Weather - 2026-09-15 - Afternoon - Sunny
67°F 20°C
Sunny
Early-Evening
Erwin Weather - 2026-09-15 - Evening - Sunny
69°F 20°C
Sunny
Mildly cool near 67°F 20°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds shifting from the SSE to the SE at 13 mph 21 km/h. Gusts up to 25 mph 41 km/h.

Wednesday, September 16, 2026

Mid-Morning
Erwin Weather - 2026-09-16 - Morning - Scattered Showers
60°F 15°C
Scattered Showers
Mid-Afternoon
Erwin Weather - 2026-09-16 - Afternoon - Sunny
69°F 20°C
Sunny
Early-Evening
Erwin Weather - 2026-09-16 - Evening - Sunny
60°F 16°C
Sunny
Pleasant near 69°F 20°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds turning from the NW to the NE at 13 mph 20 km/h. Gusts up to 21 mph 34 km/h.

Thursday, September 17, 2026

Mid-Morning
Erwin Weather - 2026-09-17 - Morning - Sunny
49°F 10°C
Sunny
Mid-Afternoon
Erwin Weather - 2026-09-17 - Afternoon - Overcast
61°F 16°C
Overcast
Early-Evening
Erwin Weather - 2026-09-17 - Evening - Overcast
60°F 16°C
Overcast
Cool with a high near 61°F 16°C, cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds switching from the ESE to the SE at 15 mph 24 km/h. Gusts up to 26 mph 42 km/h.

Friday, September 18, 2026

Mid-Morning
Erwin Weather - 2026-09-18 - Morning - Cloudy
61°F 16°C
Cloudy
Mid-Afternoon
Erwin Weather - 2026-09-18 - Afternoon - Partly Cloudy
79°F 26°C
Partly Cloudy
Early-Evening
Erwin Weather - 2026-09-18 - Evening - Sunny
80°F 27°C
Sunny
Enjoyable around 79°F 26°C, cloudy in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the S to the SSW at 17 mph 27 km/h. Gusts up to 33 mph 52 km/h.

Saturday, September 19, 2026

Mid-Morning
Erwin Weather - 2026-09-19 - Morning - Light Showers
58°F 14°C
Light Showers
Mid-Afternoon
Erwin Weather - 2026-09-19 - Afternoon - Scattered Showers
56°F 13°C
Scattered Showers
Early-Evening
Erwin Weather - 2026-09-19 - Evening - Cloudy
49°F 10°C
Cloudy
Cool and brisk at 56°F 13°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds blowing from the NW at 21 mph 33 km/h. Gusts up to 27 mph 43 km/h.

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Weather by the Numbers

Sun, 6th
Erwin SD Weather - Sunday, Sep 6, 2026 - Patchy Rain Nearby
Hi: 83°F 28°C
Lo: 68°F 20°C
Sunrise 06:59 AM
Sunset 07:57 PM
Wind SSW 15 mph25 km/h
Dew Point 70°F21°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 29% *
Humidity 74%
Mon, 7th
Erwin SD Weather - Monday, Sep 7, 2026 - Patchy Rain Nearby
Hi: 87°F 31°C
Lo: 64°F 18°C
Sunrise 07:00 AM
Sunset 07:56 PM
Wind SSE 23 mph36 km/h
Dew Point 61°F16°C
uv Index 6
Barometric Pressure 29.83 in1010 mb
POP 20% *
Humidity 63%
Tue, 8th
Erwin SD Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 82°F 28°C
Lo: 69°F 20°C
Sunrise 07:01 AM
Sunset 07:54 PM
Wind NNW 15 mph24 km/h
Dew Point 57°F14°C
uv Index 5
Barometric Pressure 29.85 in1011 mb
POP 12% *
Humidity 50%
Wed, 9th
Erwin SD Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 77°F 25°C
Lo: 60°F 16°C
Sunrise 07:02 AM
Sunset 07:52 PM
Wind NW 17 mph28 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 46%
Thu, 10th
Erwin SD Weather - Thursday, Sep 10, 2026 - Partly Cloudy
Hi: 83°F 28°C
Lo: 60°F 16°C
Sunrise 07:04 AM
Sunset 07:50 PM
Wind SSW 11 mph17 km/h
Dew Point 44°F6°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 5% *
Humidity 35%
Fri, 11th
Erwin SD Weather - Friday, Sep 11, 2026 - Sunny
Hi: 79°F 26°C
Lo: 64°F 18°C
Sunrise 07:05 AM
Sunset 07:48 PM
Wind N 16 mph25 km/h
Dew Point 43°F6°C
uv Index 6
Barometric Pressure 29.77 in1008 mb
POP 1% *
Humidity 32%
Sat, 12th
Erwin SD Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 78°F 25°C
Lo: 60°F 16°C
Sunrise 07:06 AM
Sunset 07:46 PM
Wind SE 15 mph25 km/h
Dew Point 37°F3°C
uv Index 5
Barometric Pressure 29.77 in1008 mb
POP 2% *
Humidity 29%
Sun, 13th
Erwin SD Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 69°F 20°C
Lo: 56°F 13°C
Sunrise 07:07 AM
Sunset 07:45 PM
Wind ENE 15 mph23 km/h
Dew Point 53°F12°C
uv Index 4
Barometric Pressure 29.8 in1009 mb
POP 18% *
Humidity 73%
Mon, 14th
Erwin SD Weather - Monday, Sep 14, 2026 - Patchy Rain Nearby
Hi: 58°F 14°C
Lo: 48°F 9°C
Sunrise 07:08 AM
Sunset 07:43 PM
Wind NNE 11 mph18 km/h
Dew Point 44°F7°C
uv Index 3
Barometric Pressure 30.09 in1019 mb
POP 19% *
Humidity 75%
Tue, 15th
Erwin SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 69°F 21°C
Lo: 50°F 10°C
Sunrise 07:09 AM
Sunset 07:41 PM
Wind SSE 12 mph19 km/h
Dew Point 44°F7°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 3% *
Humidity 57%
Wed, 16th
Erwin SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 69°F 20°C
Lo: 53°F 12°C
Sunrise 07:11 AM
Sunset 07:39 PM
Wind NNW 16 mph26 km/h
Dew Point 47°F8°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 3% *
Humidity 53%
Thu, 17th
Erwin SD Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 63°F 17°C
Lo: 49°F 9°C
Sunrise 07:12 AM
Sunset 07:37 PM
Wind SE 11 mph17 km/h
Dew Point 38°F3°C
uv Index 3
Barometric Pressure 30.3 in1026 mb
POP 13% *
Humidity 54%
Fri, 18th
Erwin SD Weather - Friday, Sep 18, 2026 - Partly Cloudy
Hi: 82°F 28°C
Lo: 58°F 14°C
Sunrise 07:13 AM
Sunset 07:35 PM
Wind S 26 mph42 km/h
Dew Point 57°F14°C
uv Index 6
Barometric Pressure 29.8 in1009 mb
POP 6% *
Humidity 62%
Sat, 19th
Erwin SD Weather - Saturday, Sep 19, 2026 - Patchy Rain Nearby
Hi: 69°F 21°C
Lo: 45°F 7°C
Sunrise 07:14 AM
Sunset 07:33 PM
Wind NW 17 mph27 km/h
Dew Point 49°F10°C
uv Index 3
Barometric Pressure 29.8 in1009 mb
POP 23% *
Humidity 79%
* POP = Probability of Precipitation. Data for 12:00 PM.