◆ DEERFIELD, SD HAIL HISTORY · PENNINGTON COUNTY
Deerfield, SD hail history & hail map
Deerfield, South Dakota has had 10 hail events in the past 5 years, with hail up to 1.50″ (Ping Pong Ball). Most recent: Aug 27, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
10Hail events in the past 5 years
1.50″Largest recorded hail · Ping Pong Ball
1.25″Largest ground report (within 3 mi)
1.50″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Deerfield, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Deerfield
| Date | Peak hail | Sources |
|---|---|---|
| Aug 27, 2026 | 1.00″ Quarter | Radar 1.00″ |
| Jul 3, 2026 | 1.25″ Half Dollar | 2 ground reports (max 1.25″) |
| Jun 5, 2026 | 1.00″ Quarter | Radar 1.00″ |
| Jun 4, 2026 | 1.25″ Half Dollar | Radar 1.25″ · 1 ground report (max 1.00″) |
| Aug 2, 2025 | 0.75″ Penny | Radar 0.75″ |
| Jul 23, 2025 | 1.00″ Quarter | Radar 1.00″ |
| Jul 14, 2025 | 1.50″ Ping Pong Ball | Radar 1.50″ |
| Jul 18, 2023 | 0.75″ Penny | Radar 0.75″ |
| Jul 12, 2023 | 1.25″ Half Dollar | Radar 1.25″ |
| Jun 12, 2022 | 1.25″ Half Dollar | Radar 1.25″ |
More South Dakota hail history
All South Dakota cities & hail days →
Events count days with NOAA MRMS radar hail over Deerfield (44.020, -103.840) or an NWS / CoCoRaHS hail report within 3 miles. Data window: NOAA MRMS radar hail swaths Oct 2021 – Nov 2026; NWS / NCEI Storm Events reports Nov 2024 – Jul 2026; CoCoRaHS volunteer reports Oct 2021 – present. Radar hail sizes are estimates, not ground truth; hail at any single address can differ.