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.
Today
81°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 81. Southeast wind around 5 mph, with gusts as high as 20 mph.
7-day forecast for Boulder Canyon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Areas Of Smoke | 5 mph SE | 6% |
| Tonight | 60°F | Areas Of Smoke | 5 mph S | 7% |
| Thursday | 92°F | Areas Of Smoke | 1 to 7 mph NW | 4% |
| Thursday Night | 61°F | Mostly Clear | 2 to 7 mph W | 0% |
| Friday | 88°F | Sunny | 2 to 13 mph E | 0% |
| Friday Night | 65°F | Mostly Clear | 3 to 13 mph S | 1% |
| Saturday | 91°F | Sunny | 3 to 8 mph N | 1% |
| Saturday Night | 66°F | Mostly Clear | 5 to 8 mph S | 5% |
| Sunday | 92°F | Mostly Sunny | 5 to 12 mph SE | 11% |
| Sunday Night | 64°F | Partly Cloudy | 1 to 10 mph S | 14% |
| Monday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 13 mph SE | 18% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 5 to 12 mph SE | 49% |
| Tuesday | 84°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph SE | 37% |
| Tuesday Night | 61°F | Chance Showers And Thunderstorms | 2 to 9 mph SE | 46% |
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 Aug 5, 2026.