Live Weather & Forecast
Weather in Eureka
South Dakota, United States · Real-time conditions & 3-day outlook
21°C
Feels like 21°C
70°F / Feels 70°F
Partly cloudy
Eureka, South Dakota
🌞 Daytime
Updated: 2026-04-12 19:30
Humidity
33%
Wind
19.8 km/h WNW
Wind Gust
30.5 km/h
Pressure
1000 mb
Visibility
16 km
UV Index
0.4
(Low)
Precipitation
0 mm
Cloud Cover
50%
Dew Point
4.3°C
Wind Degree
287°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
178.9 μg/m³
NO₂
4 μg/m³
O₃
65 μg/m³
SO₂
1.7 μg/m³
PM 2.5
7.5 μg/m³
PM 10
8.3 μg/m³
Today's Hourly Forecast
24-hour breakdown for Eureka, South Dakota
12 AM
9°
Overcast
1 AM
9°
Mist
2 AM
9°
Partly Cloudy
3 AM
9°
Clear
4 AM
8°
Mist
5 AM
8°
Mist
6 AM
8°
Cloudy
7 AM
8°
Mist
8 AM
8°
Overcast
9 AM
9°
Overcast
10 AM
12°
Overcast
11 AM
15°
Sunny
12 PM
18°
Sunny
1 PM
20°
Sunny
2 PM
22°
Sunny
3 PM
24°
Sunny
4 PM
25°
Sunny
5 PM
25°
Sunny
6 PM
25°
Sunny
7 PM
21°
Partly cloudy
8 PM
19°
Sunny
9 PM
17°
Clear
10 PM
15°
Clear
11 PM
13°
Clear
3-Day Forecast
Daily overview for Eureka, South Dakota
Today
Partly Cloudy
25°
/
8°
🌧️ 0% chance of rain
💧 Avg. humidity: 68%
💨 Max wind: 28.1 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:58 AM
🌇 Sunset: 08:21 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Overcast
10°
/
5°
🌧️ 0% chance of rain
💧 Avg. humidity: 86%
💨 Max wind: 27 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.3
🌅 Sunrise: 06:56 AM
🌇 Sunset: 08:23 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Overcast
15°
/
4°
🌧️ 0% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 18.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:54 AM
🌇 Sunset: 08:24 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Eureka
Plan your trip to Eureka, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Eureka?
Current conditions in Eureka: Partly cloudy, temperature 21°C, humidity 33%.
What is the best time to visit Eureka?
The best time to visit Eureka is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Eureka?
Eureka is located at approximately 45.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Eureka?
The wettest period in Eureka is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Eureka?
For visits to Eureka during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Eureka in?
Eureka is located in United States, in the state of South Dakota.
What are the public holidays in Eureka in 2026?
View the 2026 public holidays for Eureka on our Holidays page.
What are the GPS coordinates used for the weather forecast in Eureka?
The weather forecast for Eureka uses coordinates 45.7694, -99.6196.