Soil Temperature in Rapid City, SD
Real-time soil temperature data at multiple depths for agricultural and gardening use.
As of now, the soil temperature at a depth of 6 inches is 32.8°F, at 12 inches is 36.2°F, and deeper at 20 inches it's 39.5°F. Based on the 6-inch reading, planting conditions are currently: Too Cold for Planting
Current Soil Temperature Readings by Inch Depth
- 2" depth 31.8°F
- 4" depth 31.8°F
- 6" depth 32.8°F
- 8" depth 33.6°F
- 12" depth 36.2°F
- 20" depth 39.5°F
Soil Temperature Planting Readiness
Too Cold for Planting
Pre-Emergent Herbicide Application (Spring - Crabgrass/Summer Weeds)
Ready to Apply
Soil has been at 50°F+ for 6 consecutive days. Pre-emergent can be applied now.
Temperature Progress
Today's Highest Soil Temp (6"): 66.4°F
Required: 50°F+
Last updated: Apr 23, 2026
Application Guidelines
- Apply when soil reaches 50°F+ for 3+ consecutive days
- Typically applied in February or March
- Controls summer annual weeds before they germinate
- Water lightly after application for best results