# Rainfall in South Dakota (statewide average)

Average rainfall across all of South Dakota, retrieved 7:15 PM CDT on Friday, October 16, 2026.

| Period | Statewide average | Normal |
| --- | --- | --- |
| Since 7 AM CDT Fri, Oct 16 (in progress) | 0.00 in |  |
| 7 AM CDT Thu, Oct 15 to 7 AM CDT Fri, Oct 16 | 0.02 in |  |
| October 2026 (to date) | 0.41 in | 0.96 in |
| 2026 to date | 18.54 in | 17.72 in |

## Monthly rainfall

| Month | Statewide average | Normal |
| --- | --- | --- |
| July 2026 | 3.07 in | 2.48 in |
| August 2026 | 2.26 in | 1.99 in |
| September 2026 | 3.86 in | 1.71 in |
| October 2026 (to date) | 0.41 in | 0.96 in |

## About this data

- These are averages over the whole state. Rain varies a lot within a state; for a specific place use its ZIP code: https://www.raindrop.farm/rainfall-totals/zipcode/{ZIP}.md (for example https://www.raindrop.farm/rainfall-totals/zipcode/50010.md).
- A day here runs 24 hours from 7 AM CDT (12:00 UTC) and is named for the date it starts on. Rainfall is in inches.
- Normal: the 30-year PRISM climate normal for the same period, to date for the current month and year.
- Source: [RainDrop](https://www.raindrop.farm), which estimates rainfall from NOAA Doppler radar, rain gauges and satellite observations.
- Map and full page: https://www.raindrop.farm/rainfall-totals/state/south-dakota
- Rainfall for any date back to January 2015, at any address or field: the [RainDrop app](https://www.raindrop.farm/app) or the [RainDrop API](https://www.raindrop.farm/api).