Youngstown, OH Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Youngstown, Ohio.
Gardening in Youngstown
The Mahoning Valley's steel heritage gave way to a community that's rebuilding — and food gardens are part of that renewal.
Zone 6a with 168 frost-free days. The Mahoning River valley provides fertile growing ground. Northeast Ohio climate with some Pennsylvania influence.
Youngstown's urban farming initiative has turned abandoned industrial land into productive growing space. The city's Italian heritage neighborhoods maintain kitchen garden traditions.
What This Means for Youngstown Gardeners
The average last spring frost in Youngstown is around April 25, and the average first fall frost arrives around October 10. That gives you approximately 168 frost-free days to work with.
At 168 days, you're working with a compressed but productive window. Choose varieties by their days-to-maturity number — anything under 75 days is safe, 75-90 requires indoor starting, and 90+ is a calculated risk. The tradeoff: your cool, moderate summers are excellent for crops that heat-zone gardeners struggle with. Your lettuce doesn't bolt in June. Your peas produce for weeks longer. Cool-season crops are your superpower.
These dates are based on NOAA 30-year Climate Normal data for the Youngstown area. Your actual frost dates could shift 2-3 weeks in either direction in any given year. Learn more about our data sources.
What to Grow in Youngstown
Youngstown's 168-day season gives you plenty of time for most vegetables with good planning. Start warm-season crops indoors to maximize your window. Cool-season crops thrive in your spring and fall shoulder seasons. Recommended starting points: tomatoes, peppers, lettuce, carrots, beans, broccoli, garlic, and basil.
See the full Ohio planting guide for all 40 plants: Ohio Planting Calendar. Or enter your zip code for exact planting dates personalized to Youngstown.
More About Zone 6A
Youngstown is in USDA Hardiness Zone 6A, which means average annual extreme minimum temperatures between -10°F to -5°F. View the full Zone 6A planting guide.
See the complete planting calendar for Ohio: Ohio Planting Calendar.
Other Cities in Ohio
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Youngstown area. They represent historical averages, not predictions. In any given year, the actual last frost could be 2-3 weeks earlier or later. Microclimates within Youngstown (urban heat islands, hilltops, low-lying valleys) can also shift your local frost dates by a week or more.
Start warm-season seeds indoors 6-8 weeks before your last frost (April 25) to maximize your 168-day window. Direct sow cold-hardy crops like peas and lettuce 3-4 weeks before last frost. Every week of early indoor starting matters at this season length. Enter your zip code for exact dates.