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
63°F
Patchy Fog then Chance Showers And Thunderstorms
Patchy fog and showers and thunderstorms likely before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers and thunderstorms. Cloudy, with a high near 63. East wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
7-day forecast for Boulder Canyon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Patchy Fog then Chance Showers And Thunderstorms | 8 mph E | 82% |
| Tonight | 50°F | Showers And Thunderstorms | 7 mph E | 80% |
| Sunday | 57°F | Showers And Thunderstorms | 7 to 10 mph E | 99% |
| Sunday Night | 47°F | Rain Showers | 2 to 8 mph E | 96% |
| Monday | 61°F | Chance Rain Showers | 2 to 12 mph SE | 39% |
| Monday Night | 47°F | Slight Chance Rain Showers then Partly Cloudy | 6 to 12 mph SE | 15% |
| Tuesday | 72°F | Sunny | 6 to 15 mph SE | 4% |
| Tuesday Night | 55°F | Mostly Clear | 2 to 15 mph S | 6% |
| Wednesday | 77°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph SE | 39% |
| Wednesday Night | 56°F | Partly Cloudy | 3 to 7 mph SW | 13% |
| Thursday | 80°F | Mostly Sunny | 2 to 8 mph N | 4% |
| Thursday Night | 58°F | Mostly Clear | 7 mph S | 4% |
| Friday | 81°F | Mostly Sunny | 6 to 14 mph S | 6% |
| Friday Night | 59°F | Slight Chance Rain Showers | 6 to 14 mph S | 18% |
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 Sep 19, 2026.