County Data
New Haven County, Connecticut
Self-reliance and preparedness data for New Haven County
Relatively Moderate
Hazard Risk (13.7/100)
7b
USDA Zone
224
Frost-Free Days
Moderate
Solar (3.9 kWh/m²/day)
Natural Hazard Risks in New Haven County
| Hazard | Risk Rating | Score |
|---|---|---|
| Lightning | Relatively High | 28.3 |
| Tornado | Relatively Moderate | 23.7 |
| Ice Storm | Relatively Moderate | 21.5 |
| Cold Wave | Relatively Moderate | 20.2 |
| Strong Wind | Relatively Moderate | 17.7 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Climate Profile
Temperature & Growing Season
| January Avg | 33°F |
| July Avg | 75°F |
| USDA Zone | 7b |
| Frost-Free Days | 224 |
Water & Energy
| Annual Precipitation | 56.2″ |
| Solar Potential | 3.9 kWh/m²/day |
| Wind Speed | 2.7 m/s |
| Soil Type | Sandy Loam |
Local Species
72
Edible species
34
Medicinal species
75
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in New Haven County, Connecticut?
- New Haven County has an overall hazard rating of Relatively Moderate based on FEMA National Risk Index data. The top threats are Lightning, Tornado, Ice Storm. Each hazard is scored 0–100 by likelihood and expected impact.
- What is the growing season in New Haven County?
- New Haven County is in USDA Hardiness Zone 7b with approximately 224 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 New Haven County good for solar power?
- New Haven 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 New Haven County?
- Our database identifies 72 edible plant species in New Haven 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 New Haven County?
- New Haven County has an autonomy score of 75. 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.