Reference
Frost Date Estimator
Estimate frost dates for your growing zone
Frequently Asked Questions
How do I find my USDA zone?
Visit the USDA Plant Hardiness Zone Map at planthardiness.ars.usda.gov and enter your zip code. Your zone is based on average annual minimum winter temperature. The higher the zone number, the warmer and longer your growing season.
Are these dates exact?
No. These are averages based on historical data. Actual frost dates vary by year, microclimate, elevation, and proximity to water. Use these as guidelines and watch local forecasts in spring and fall.
About the Frost Date Estimator
Estimate your first and last frost dates based on your USDA plant hardiness zone. See your growing season length and plan accordingly.