County Data
Nassau County, Florida
Self-reliance and preparedness data for Nassau County
Relatively Low
Hazard Risk (9.1/100)
9b
USDA Zone
319
Frost-Free Days
Good
Solar (4.8 kWh/m²/day)
Natural Hazard Risks in Nassau County
| Hazard | Risk Rating | Score |
|---|---|---|
| Wildfire | Relatively Moderate | 18.7 |
| Tornado | Relatively Low | 14.2 |
| Lightning | Relatively Low | 12.8 |
| Coastal Flooding | Relatively Low | 10.6 |
| Cold Wave | Relatively Low | 9.2 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Climate Profile
Temperature & Growing Season
| January Avg | 55°F |
| July Avg | 80°F |
| USDA Zone | 9b |
| Frost-Free Days | 319 |
Water & Energy
| Annual Precipitation | 53.8″ |
| Solar Potential | 4.8 kWh/m²/day |
| Wind Speed | 0.6 m/s |
| Soil Type | Sand |
Local Species
62
Edible species
27
Medicinal species
84
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in Nassau County, Florida?
- Nassau County has an overall hazard rating of Relatively Low based on FEMA National Risk Index data. The top threats are Wildfire, Tornado, Lightning. Each hazard is scored 0–100 by likelihood and expected impact.
- What is the growing season in Nassau County?
- Nassau County is in USDA Hardiness Zone 9b with approximately 319 frost-free days per year. This determines which crops, fruit trees, and perennials can survive your winters and how long your outdoor growing season lasts.
- Is Nassau County good for solar power?
- Nassau County has a good 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 Nassau County?
- Our database identifies 62 edible plant species in Nassau 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 Nassau County?
- Nassau County has an autonomy score of 84. 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.