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Eureka SD Weather - Clear - 59°F
Clear
59°F
Updated 6:22 am
Feels Like 54°F
Humidity 83%
Wind SE 13 mph
Barometer  29.79 in
Dew Point 54°F
Eureka SD Weather - Clear - 15°C
Clear
15°C
Updated 6:22 am
Feels Like 12°C
Humidity 83%
Wind SE 21 km/h
Barometer  100.8 kPa
Dew Point 12°C
Eureka, SD Weather and Current Conditionseureka sd weather forecast

Eureka, SD Weather Forecast

Eureka South Dakota WeatherEureka, South Dakota Weather Weather Forecast
14 day API forecast for Eureka, South Dakota. Note. The 7-day weather forecast for Eureka, SD is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Eureka, SD Weather Forecast Dated: 622 AM Fri Oct 23 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and a stable pattern will dominate.

Friday, October 23, 2026

Mid-Morning
Eureka Weather - 2026-10-23 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
Eureka Weather - 2026-10-23 - Afternoon - Overcast
76°F 24°C
Overcast
Early-Evening
Eureka Weather - 2026-10-23 - Evening - Overcast
75°F 24°C
Overcast
Pleasant near 76°F 24°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SE to the SSE at 15 mph 25 km/h. Gusts up to 31 mph 50 km/h.

Saturday, October 24, 2026

Mid-Morning
Eureka Weather - 2026-10-24 - Morning - Overcast
47°F 8°C
Overcast
Mid-Afternoon
Eureka Weather - 2026-10-24 - Afternoon - Overcast
54°F 12°C
Overcast
Early-Evening
Eureka Weather - 2026-10-24 - Evening - Overcast
49°F 9°C
Overcast
Cool and brisk at 54°F 12°C, overcast throughout the day, with lower humidity and barometric pressure rising. Winds tapering down from WNW 17 mph 28 km/h to N 8 mph 13 km/h.

Sunday, October 25, 2026

Mid-Morning
Eureka Weather - 2026-10-25 - Morning - Overcast
38°F 3°C
Overcast
Mid-Afternoon
Eureka Weather - 2026-10-25 - Afternoon - Overcast
53°F 12°C
Overcast
Early-Evening
Eureka Weather - 2026-10-25 - Evening - Overcast
49°F 9°C
Overcast
Chilly near 53°F 12°C, overcast throughout the day, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 9 mph 14 km/h.

Monday, October 26, 2026

Mid-Morning
Eureka Weather - 2026-10-26 - Morning - Overcast
37°F 3°C
Overcast
Mid-Afternoon
Eureka Weather - 2026-10-26 - Afternoon - Overcast
41°F 5°C
Overcast
Early-Evening
Eureka Weather - 2026-10-26 - Evening - Overcast
40°F 5°C
Overcast
Nippy around 41°F 5°C, overcast throughout the day, with lower humidity and steady pressure. Winds swinging from the ENE to the E at 9 mph 14 km/h.

Tuesday, October 27, 2026

Mid-Morning
Eureka Weather - 2026-10-27 - Morning - Partly Cloudy
34°F 1°C
Partly Cloudy
Mid-Afternoon
Eureka Weather - 2026-10-27 - Afternoon - Sunny
51°F 10°C
Sunny
Early-Evening
Eureka Weather - 2026-10-27 - Evening - Sunny
45°F 8°C
Sunny
Brisk around 51°F 10°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds shifting from the E to the SE at 8 mph 13 km/h. Gusts up to 20 mph 32 km/h.

Wednesday, October 28, 2026

Mid-Morning
Eureka Weather - 2026-10-28 - Morning - Scattered Showers
46°F 8°C
Scattered Showers
Mid-Afternoon
Eureka Weather - 2026-10-28 - Afternoon - Scattered Showers
53°F 12°C
Scattered Showers
Early-Evening
Eureka Weather - 2026-10-28 - Evening - Scattered Showers
43°F 6°C
Scattered Showers
Cool and brisk at 53°F 12°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds increasing from the SE at 8 mph 13 km/h to W at 19 mph 31 km/h. Gusts up to 36 mph 58 km/h.

Thursday, October 29, 2026

Mid-Morning
Eureka Weather - 2026-10-29 - Morning - Overcast
34°F 1°C
Overcast
Mid-Afternoon
Eureka Weather - 2026-10-29 - Afternoon - Overcast
39°F 4°C
Overcast
Early-Evening
Eureka Weather - 2026-10-29 - Evening - Partly Cloudy
36°F 2°C
Partly Cloudy
Nippy around 39°F 4°C, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds out of the NW at 13 mph 21 km/h. Gusts up to 20 mph 33 km/h.

Friday, October 30, 2026

Mid-Morning
Eureka Weather - 2026-10-30 - Morning - Partly Cloudy
32°F 0°C
Partly Cloudy
Mid-Afternoon
Eureka Weather - 2026-10-30 - Afternoon - Cloudy
41°F 5°C
Cloudy
Early-Evening
Eureka Weather - 2026-10-30 - Evening - Partly Cloudy
38°F 4°C
Partly Cloudy
Biting cold near 41°F 5°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling.

Saturday, October 31, 2026

Mid-Morning
Eureka Weather - 2026-10-31 - Morning - Partly Cloudy
35°F 2°C
Partly Cloudy
Mid-Afternoon
Eureka Weather - 2026-10-31 - Afternoon - Partly Cloudy
43°F 6°C
Partly Cloudy
Early-Evening
Eureka Weather - 2026-10-31 - Evening - Partly Cloudy
37°F 3°C
Partly Cloudy
Cold with a high near 43°F 6°C, partly cloudy throughout the day, with lower humidity and steady pressure.

Sunday, November 1, 2026

Mid-Morning
Eureka Weather - 2026-11-01 - Morning - Snow
34°F 1°C
Snow
Mid-Afternoon
Eureka Weather - 2026-11-01 - Afternoon - Light Sleet Showers
40°F 5°C
Light Sleet Showers
Early-Evening
Eureka Weather - 2026-11-01 - Evening - Cloudy
37°F 3°C
Cloudy
Nippy around 40°F 5°C, intermittent snow through midday, easing by evening, with steady humidity and steady pressure.

Monday, November 2, 2026

Mid-Morning
Eureka Weather - 2026-11-02 - Morning - Sunny
40°F 4°C
Sunny
Mid-Afternoon
Eureka Weather - 2026-11-02 - Afternoon - Sunny
49°F 9°C
Sunny
Early-Evening
Eureka Weather - 2026-11-02 - Evening - Clear
43°F 6°C
Clear
Chilly near 49°F 9°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.

Tuesday, November 3, 2026

Mid-Morning
Eureka Weather - 2026-11-03 - Morning - Partly Cloudy
40°F 5°C
Partly Cloudy
Mid-Afternoon
Eureka Weather - 2026-11-03 - Afternoon - Partly Cloudy
48°F 9°C
Partly Cloudy
Early-Evening
Eureka Weather - 2026-11-03 - Evening - Overcast
42°F 6°C
Overcast
Crisp with a high near 48°F 9°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.

Wednesday, November 4, 2026

Mid-Morning
Eureka Weather - 2026-11-04 - Morning - Partly Cloudy
42°F 5°C
Partly Cloudy
Mid-Afternoon
Eureka Weather - 2026-11-04 - Afternoon - Partly Cloudy
53°F 11°C
Partly Cloudy
Early-Evening
Eureka Weather - 2026-11-04 - Evening - Clear
49°F 9°C
Clear
Brisk around 53°F 11°C, cloudy in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds moving from the SSE to the S at 10 mph 15 km/h. Gusts up to 22 mph 35 km/h.

Thursday, November 5, 2026

Mid-Morning
Eureka Weather - 2026-11-05 - Morning - Sunny
47°F 9°C
Sunny
Mid-Afternoon
Eureka Weather - 2026-11-05 - Afternoon - Overcast
58°F 14°C
Overcast
Early-Evening
Eureka Weather - 2026-11-05 - Evening - Overcast
49°F 9°C
Overcast
Mildly cool near 58°F 14°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure.

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Weather by the Numbers

Fri, 23rd
Eureka SD Weather - Friday, Oct 23, 2026 - Patchy Rain Nearby
Hi: 79°F 26°C
Lo: 59°F 15°C
Sunrise 08:06 AM
Sunset 06:39 PM
Wind SSE 18 mph28 km/h
Dew Point 56°F13°C
uv Index 2
Barometric Pressure 29.77 in1008 mb
POP 23% *
Humidity 64%
Sat, 24th
Eureka SD Weather - Saturday, Oct 24, 2026 - Overcast
Hi: 70°F 21°C
Lo: 42°F 5°C
Sunrise 08:07 AM
Sunset 06:37 PM
Wind NW 18 mph30 km/h
Dew Point 34°F1°C
uv Index 2
Barometric Pressure 30.24 in1024 mb
POP 13% *
Humidity 54%
Sun, 25th
Eureka SD Weather - Sunday, Oct 25, 2026 - Overcast
Hi: 53°F 12°C
Lo: 36°F 2°C
Sunrise 08:09 AM
Sunset 06:35 PM
Wind ENE 8 mph12 km/h
Dew Point 17°F-8°C
uv Index 2
Barometric Pressure 30.5 in1033 mb
POP 9% *
Humidity 28%
Mon, 26th
Eureka SD Weather - Monday, Oct 26, 2026 - Overcast
Hi: 42°F 6°C
Lo: 36°F 2°C
Sunrise 08:10 AM
Sunset 06:34 PM
Wind ENE 10 mph16 km/h
Dew Point 23°F-5°C
uv Index 1
Barometric Pressure 30.5 in1033 mb
POP 13% *
Humidity 54%
Tue, 27th
Eureka SD Weather - Tuesday, Oct 27, 2026 - Cloudy
Hi: 51°F 10°C
Lo: 32°F 0°C
Sunrise 08:12 AM
Sunset 06:32 PM
Wind ESE 8 mph13 km/h
Dew Point 34°F1°C
uv Index 2
Barometric Pressure 30.21 in1023 mb
POP 16% *
Humidity 70%
Wed, 28th
Eureka SD Weather - Wednesday, Oct 28, 2026 - Patchy Rain Nearby
Hi: 55°F 13°C
Lo: 39°F 4°C
Sunrise 08:13 AM
Sunset 06:31 PM
Wind SSW 11 mph17 km/h
Dew Point 46°F8°C
uv Index 2
Barometric Pressure 29.71 in1006 mb
POP 38% *
Humidity 89%
Thu, 29th
Eureka SD Weather - Thursday, Oct 29, 2026 - Overcast
Hi: 39°F 4°C
Lo: 33°F 1°C
Sunrise 08:14 AM
Sunset 06:29 PM
Wind NW 15 mph24 km/h
Dew Point 21°F-6°C
uv Index 1
Barometric Pressure 30.24 in1024 mb
POP 12% *
Humidity 52%
Fri, 30th
Eureka SD Weather - Friday, Oct 30, 2026 - Partly Cloudy
Hi: 41°F 5°C
Lo: 29°F -2°C
Sunrise 08:16 AM
Sunset 06:27 PM
Wind WSW 5 mph8 km/h
Dew Point 22°F-6°C
uv Index 2
Barometric Pressure 30.27 in1025 mb
POP 7% *
Humidity 53%
Sat, 31st
Eureka SD Weather - Saturday, Oct 31, 2026 - Partly Cloudy
Hi: 44°F 6°C
Lo: 32°F -0°C
Sunrise 08:17 AM
Sunset 06:26 PM
Wind SE 6 mph9 km/h
Dew Point 26°F-3°C
uv Index 3
Barometric Pressure 30.12 in1020 mb
POP 6% *
Humidity 56%
Sun, 1st
Eureka SD Weather - Sunday, Nov 1, 2026 - Light Sleet
Hi: 40°F 5°C
Lo: 31°F -1°C
Sunrise 08:19 AM
Sunset 06:25 PM
Wind ESE 3 mph5 km/h
Dew Point 23°F-5°C
uv Index 1
Barometric Pressure 30.24 in1024 mb
POP 36% *
Humidity 51%
Mon, 2nd
Eureka SD Weather - Monday, Nov 2, 2026 - Sunny
Hi: 49°F 9°C
Lo: 34°F 1°C
Sunrise 07:20 AM
Sunset 05:24 PM
Wind W 3 mph5 km/h
Dew Point 32°F-0°C
uv Index 3
Barometric Pressure 30.21 in1023 mb
POP 3% *
Humidity 52%
Tue, 3rd
Eureka SD Weather - Tuesday, Nov 3, 2026 - Partly Cloudy
Hi: 48°F 9°C
Lo: 36°F 2°C
Sunrise 07:22 AM
Sunset 05:22 PM
Wind NNE 4 mph6 km/h
Dew Point 33°F1°C
uv Index 3
Barometric Pressure 30.33 in1027 mb
POP 8% *
Humidity 58%
Wed, 4th
Eureka SD Weather - Wednesday, Nov 4, 2026 - Partly Cloudy
Hi: 53°F 11°C
Lo: 37°F 3°C
Sunrise 07:23 AM
Sunset 05:21 PM
Wind SSE 11 mph18 km/h
Dew Point 36°F2°C
uv Index 3
Barometric Pressure 30.12 in1020 mb
POP 8% *
Humidity 59%
Thu, 5th
Eureka SD Weather - Thursday, Nov 5, 2026 - Overcast
Hi: 58°F 14°C
Lo: 43°F 6°C
Sunrise 07:25 AM
Sunset 05:19 PM
Wind WSW 6 mph10 km/h
Dew Point 36°F2°C
uv Index 3
Barometric Pressure 29.8 in1009 mb
POP 9% *
Humidity 44%
* POP = Probability of Precipitation. Data for 12:00 PM.