Boulder Canyon, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boulder Canyon, a community in Lawrence County, South Dakota.
This Afternoon
50°F
Sunny
Sunny. High near 50, with temperatures falling to around 45 in the afternoon. Northwest wind 7 to 13 mph, with gusts as high as 25 mph.
7-day forecast for Boulder Canyon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 50°F | Sunny | 7 to 13 mph NW | 0% |
| Tonight | 33°F | Mostly Clear | 7 mph W | 0% |
| Wednesday | 51°F | Partly Sunny | 8 mph NW | 0% |
| Wednesday Night | 34°F | Mostly Cloudy | 5 to 8 mph W | 0% |
| Thursday | 55°F | Sunny | 5 mph SE | 0% |
| Thursday Night | 36°F | Partly Cloudy | 5 mph SW | 0% |
| Friday | 53°F | Mostly Sunny | 2 to 8 mph W | 1% |
| Friday Night | 38°F | Mostly Clear | 6 mph SW | 5% |
| Saturday | 57°F | Sunny | 7 to 15 mph W | 5% |
| Saturday Night | 39°F | Mostly Clear | 3 to 7 mph SW | 2% |
| Sunday | 66°F | Sunny | 2 to 6 mph W | 0% |
| Sunday Night | 45°F | Mostly Clear | 8 mph W | 0% |
| Monday | 59°F | Sunny | 3 to 8 mph NW | 0% |
| Monday Night | 41°F | Partly Cloudy | 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Boulder Canyon (44.397, -103.605). Updated through the day.
Growing snapshot for Boulder Canyon
Last spring frost
May 18
First fall frost
Sep 29
Growing season
133 days
Hardiness zone
5a
More local growing data for Boulder Canyon: nearby ZIP 57732 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Belle Fourche
Central City
Crook City
Deadwood
Lead
Mountain Plains
North Spearfish
Spearfish
St. Onge
Whitewood
Climate data from the nearest NOAA station, Lead, Sd (3.2 mi from Boulder Canyon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.