Belle Fourche, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Belle Fourche, a city in Lawrence County, South Dakota.
Today
53°F
Partly Sunny
Partly sunny. High near 53, with temperatures falling to around 46 in the afternoon. West wind around 8 mph, with gusts as high as 16 mph.
7-day forecast for Belle Fourche
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 53°F | Partly Sunny | 8 mph W | 0% |
| Tonight | 28°F | Partly Cloudy | 7 mph W | 0% |
| Thursday | 54°F | Mostly Sunny | 2 to 8 mph SE | 0% |
| Thursday Night | 30°F | Partly Cloudy | 2 to 7 mph S | 0% |
| Friday | 54°F | Mostly Sunny | 3 to 10 mph W | 0% |
| Friday Night | 34°F | Mostly Clear | 3 to 12 mph SW | 0% |
| Saturday | 59°F | Sunny | 8 to 21 mph W | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 to 9 mph SW | 0% |
| Sunday | 66°F | Sunny | 7 mph SW | 0% |
| Sunday Night | 39°F | Mostly Clear | 7 to 10 mph W | 0% |
| Monday | 59°F | Sunny | 7 mph NW | 0% |
| Monday Night | 34°F | Partly Cloudy | 5 mph SW | 0% |
| Tuesday | 61°F | Mostly Sunny | 2 to 7 mph S | 0% |
| Tuesday Night | 38°F | Partly Cloudy | 5 to 8 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Belle Fourche (44.664, -103.859). Updated through the day.
Growing snapshot for Belle Fourche
Last spring frost
May 12
First fall frost
Oct 2
Growing season
143 days
Hardiness zone
5b
More local growing data for Belle Fourche: nearby ZIP 57779 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Boulder Canyon
Central City
Crook City
Deadwood
Lead
Mountain Plains
North Spearfish
Spearfish
St. Onge
Whitewood
Climate data from the nearest NOAA station, Spearfish, Sd (7.4 mi from Belle Fourche). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.