County Data
Mariposa County, California
Self-reliance and preparedness data for Mariposa County
Relatively Moderate
Hazard Risk (17.1/100)
8b
USDA Zone
193
Frost-Free Days
Good
Solar (5.3 kWh/m²/day)
Natural Hazard Risks in Mariposa County
| Hazard | Risk Rating | Score |
|---|---|---|
| Wildfire | Relatively High | 41.6 |
| Landslide | Relatively High | 36.0 |
| Volcanic Activity | Relatively Low | 22.0 |
| Drought | Relatively Moderate | 12.5 |
| Riverine Flooding | Relatively Moderate | 12.4 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Wildfire Risk in Mariposa County
FEMA National Risk Index41.6/100 — Meaningful, seasonal. Ranked 32 of 562 US counties where wildfire is a leading hazard.
What that means for Mariposa County households
- ●Clear leaf litter from gutters and roof valleys before dry season
- ●Know your evacuation route and where local shelters open
- ●Stock N95 masks — smoke from distant fires is the more likely exposure
- ●Keep a two-week supply buffer for the periods when roads close
Full wildfire preparedness guide · See how California compares
Climate Profile
Temperature & Growing Season
| January Avg | 41°F |
| July Avg | 78°F |
| USDA Zone | 8b |
| Frost-Free Days | 193 |
Water & Energy
| Annual Precipitation | 32.0″ |
| Solar Potential | 5.3 kWh/m²/day |
| Wind Speed | 1.2 m/s |
| Soil Type | Loam |
Local Species
54
Edible species
23
Medicinal species
72
Autonomy Score
Get Your Mariposa County Guide
Enter any zip code in Mariposa County for a full location-specific guide with planting calendars, foraging data, water strategy, and personalized action plans.
Full guide from $14.99 — printable, offline-ready
Frequently Asked Questions
- What are the biggest natural hazards in Mariposa County, California?
- Mariposa County has an overall hazard rating of Relatively Moderate based on FEMA National Risk Index data. The top threats are Wildfire, Landslide, Volcanic Activity. Each hazard is scored 0–100 by likelihood and expected impact.
- What is the growing season in Mariposa County?
- Mariposa County is in USDA Hardiness Zone 8b with approximately 193 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 Mariposa County good for solar power?
- Mariposa 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 Mariposa County?
- Our database identifies 54 edible plant species in Mariposa 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 Mariposa County?
- Mariposa County has an autonomy score of 72. 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.