Eureka, SD Weather & Growing Conditions
Today
75°F
Patchy Smoke then Sunny
Patchy smoke before 9am. Sunny, with a high near 75. West northwest wind 6 to 15 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Patchy Smoke then Sunny | 6 to 15 mph WNW | 0% |
| Tonight | 52°F | Partly Cloudy | 5 to 13 mph SSW | 0% |
| Wednesday | 83°F | Sunny | 5 to 14 mph WSW | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 8 to 13 mph SSW | 1% |
| Thursday | 88°F | Sunny | 9 to 14 mph WSW | 1% |
| Thursday Night | 60°F | Mostly Clear | 7 to 13 mph ENE | 1% |
| Friday | 89°F | Sunny | 8 to 16 mph NNW | 1% |
| Friday Night | 60°F | Mostly Clear | 12 to 15 mph E | 2% |
| Saturday | 90°F | Mostly Sunny | 15 to 18 mph E | 2% |
| Saturday Night | 60°F | Mostly Clear | 15 to 18 mph E | 7% |
| Sunday | 86°F | Mostly Sunny | 15 to 20 mph ENE | 6% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 18 mph E | 30% |
| Monday | 85°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 21 mph ENE | 30% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 16 to 20 mph ENE | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Eureka, SD
Last spring frost
May 12
First fall frost
Sep 27
Growing season
137 days
Hardiness zone
4b
Explore more for Eureka, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Eureka, Sd (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.