County Data
Jefferson County, Arkansas
Self-reliance and preparedness data for Jefferson County
Relatively Moderate
Hazard Risk (17.0/100)
8a
USDA Zone
270
Frost-Free Days
Good
Solar (4.5 kWh/m²/day)
Natural Hazard Risks in Jefferson County
| Hazard | Risk Rating | Score |
|---|---|---|
| Tornado | Relatively High | 30.8 |
| Riverine Flooding | Relatively High | 23.1 |
| Lightning | Relatively Moderate | 21.4 |
| Strong Wind | Relatively Moderate | 19.6 |
| Heat Wave | Relatively High | 18.3 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Climate Profile
Temperature & Growing Season
| January Avg | 45°F |
| July Avg | 83°F |
| USDA Zone | 8a |
| Frost-Free Days | 270 |
Water & Energy
| Annual Precipitation | 55.5″ |
| Solar Potential | 4.5 kWh/m²/day |
| Wind Speed | 1.2 m/s |
| Soil Type | Silt Loam |
Local Species
62
Edible species
27
Medicinal species
80
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in Jefferson County, Arkansas?
- Jefferson County has an overall hazard rating of Relatively Moderate based on FEMA National Risk Index data. The top threats are Tornado, Riverine Flooding, Lightning. Each hazard is scored 0–100 by likelihood and expected impact.
- What is the growing season in Jefferson County?
- Jefferson County is in USDA Hardiness Zone 8a with approximately 270 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 Jefferson County good for solar power?
- Jefferson 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 Jefferson County?
- Our database identifies 62 edible plant species in Jefferson 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 Jefferson County?
- Jefferson County has an autonomy score of 80. 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.
Other Counties in Arkansas
Pulaski
Zone 8a • 254 frost-free days
Benton
Zone 7a • 215 frost-free days
Washington
Zone 7a • 214 frost-free days
Sebastian
Zone 8a • 253 frost-free days
Faulkner
Zone 8a • 247 frost-free days
Saline
Zone 8a • 250 frost-free days
Craighead
Zone 8a • 245 frost-free days
Garland
Zone 8a • 260 frost-free days
White
Zone 8a • 250 frost-free days
Lonoke
Zone 8a • 254 frost-free days
Crawford
Zone 7b • 250 frost-free days
Pope
Zone 8a • 217 frost-free days