Hecla, SD Weather & Growing Conditions
Overnight
49°F
Partly Cloudy
Partly cloudy, with a low around 49. West northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Partly Cloudy | 5 mph WNW | 0% |
| Tuesday | 75°F | Sunny | 5 to 13 mph WNW | 0% |
| Tuesday Night | 50°F | Mostly Clear | 5 to 9 mph SSW | 0% |
| Wednesday | 81°F | Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 6 to 13 mph SSW | 1% |
| Thursday | 85°F | Sunny | 10 to 14 mph SSW | 2% |
| Thursday Night | 60°F | Mostly Clear | 9 mph S | 3% |
| Friday | 86°F | Sunny | 12 mph SW | 3% |
| Friday Night | 59°F | Mostly Clear | 6 to 10 mph ENE | 3% |
| Saturday | 84°F | Mostly Sunny | 7 to 13 mph E | 5% |
| Saturday Night | 59°F | Mostly Clear | 12 mph NE | 11% |
| Sunday | 82°F | Mostly Sunny | 8 to 13 mph NE | 9% |
| Sunday Night | 60°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 mph ENE | 24% |
| Monday | 81°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 9 to 14 mph NE | 24% |
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 Aug 4, 2026.