Hecla, SD Weather & Growing Conditions
This Afternoon
68°F
Cloudy
Cloudy, with a high near 68. Northeast wind around 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Cloudy | 12 mph NE | 3% |
| Tonight | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 10 mph NE | 22% |
| Sunday | 63°F | Slight Chance Rain Showers then Cloudy | 13 mph NE | 17% |
| Sunday Night | 47°F | Slight Chance Rain Showers then Cloudy | 5 to 9 mph ENE | 15% |
| Monday | 65°F | Partly Sunny | 5 to 9 mph E | 8% |
| Monday Night | 42°F | Partly Cloudy | 3 to 7 mph ESE | 1% |
| Tuesday | 68°F | Mostly Sunny | 3 to 14 mph SE | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 12 mph SSE | 1% |
| Wednesday | 70°F | Partly Sunny | 10 to 17 mph SSE | 9% |
| Wednesday Night | 52°F | Showers And Thunderstorms Likely | 10 to 15 mph SSE | 56% |
| Thursday | 72°F | Showers And Thunderstorms Likely | 8 to 12 mph SSE | 56% |
| Thursday Night | 53°F | Mostly Cloudy | 7 mph SSE | 8% |
| Friday | 75°F | Partly Sunny | 5 to 13 mph SSE | 8% |
| Friday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 14 mph SSE | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hecla, SD
Last spring frost
May 7
First fall frost
Sep 29
Growing season
145 days
Hardiness zone
4a
Explore more for Hecla, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Columbia 8 N, Sd (12.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.