County Data
Day County, South Dakota
Self-reliance and preparedness data for Day County
Relatively Low
Hazard Risk (11.6/100)
Moderate
Solar (4.0 kWh/m²/day)
Natural Hazard Risks in Day County
| Hazard | Risk Rating | Score |
|---|---|---|
| Cold Wave | Very High | 62.5 |
| Winter Weather | Relatively High | 31.3 |
| Hail | Relatively Moderate | 20.6 |
| Strong Wind | Relatively Moderate | 19.7 |
| Ice Storm | Relatively Moderate | 17.6 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Climate Profile
Temperature & Growing Season
| January Avg | 8°F |
Water & Energy
| Annual Precipitation | 2.4″ |
| Solar Potential | 4.0 kWh/m²/day |
| Wind Speed | 3.7 m/s |
| Soil Type | Silt Loam |
Local Species
60
Edible species
25
Medicinal species
49
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in Day County, South Dakota?
- Day County has an overall hazard rating of Relatively Low based on FEMA National Risk Index data. The top threats are Cold Wave, Winter Weather, Hail. Each hazard is scored 0–100 by likelihood and expected impact.
- Is Day County good for solar power?
- Day County has a moderate solar rating. Solar potential is based on average daily irradiance (kWh/m²/day), which determines how much energy rooftop or ground-mounted panels can produce year-round.
- How many edible plants grow in Day County?
- Our database identifies 60 edible plant species in Day County based on regional flora data, USDA hardiness zone, and iNaturalist observations. The full field guide includes identification notes, preparation methods, and seasonal availability.
- What is the autonomy score for Day County?
- Day County has an autonomy score of 49. This composite score measures local self-reliance potential across water access, food production capacity, energy resources, and supply chain resilience. Higher scores indicate greater potential for self-sufficiency.