Frost dates · South Dakota

South Dakota frost dates,
county by county.

Last spring frost and first fall frost probability data for all 66 counties in South Dakota, computed from the NOAA 1991–2020 Climate Normals. Every county page surfaces the full probability table at three temperature thresholds plus crop-specific planting guidance.

Variation across South Dakota

25 days separate the earliest and latest counties.

The median last spring frost in Minnehaha County is April 15 — 25 days earlier than Custer County at May 10. Statewide averages aren't useful planting tools; pick your county below for the data that actually applies to your fields.

By frost timing

Counties sorted by last spring frost.

Latest at top, earliest at bottom. In most states this matches the north-to-south gradient.

List Map

Alphabetical

All South Dakota counties — A to Z.

Frost dates set the calendar. Bield: Farm runs it.

Pair these dates with live forecasts for your specific farm location. Bield: Farm logs your soil tests, planting dates, weather, and yield outcomes year over year.

Download Bield: Farm

South Dakota frost dates,county by county.

25 days separate the earliest and latest counties.

Counties sorted by last spring frost.

All South Dakota counties — A to Z.

Frost dates set the calendar. Bield: Farm runs it.

South Dakota frost dates,
county by county.