When to plant in Amherst, OH
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Amherst, Ohio — all computed from Amherst's nearest NOAA weather station.
Zone 6b means Amherst sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
ELYRIA LORAIN CO AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Amherst’s own odds, recorded at ELYRIA LORAIN CO AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 19 | May 5 | Apr 21 | Sep 28 | Oct 10 | Oct 26 |
| 32°F | May 10 | Apr 24 | Apr 9 | Oct 8 | Oct 24 | Nov 6 |
| 28°F | Apr 26 | Apr 11 | Mar 29 | Oct 21 | Nov 4 | Nov 19 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Amherst, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Amherst planting FAQ
When is the last spring frost in Amherst, OH?
Plan for the last spring frost in Amherst around April 24 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Amherst, OH?
The first fall frost in Amherst typically arrives around October 24 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Amherst in?
Amherst is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Amherst?
There are roughly 183 frost-free days in Amherst (a moderate growing season), running from the average last frost around April 24 to the first fall frost near October 24.
When should I plant tomatoes in Amherst?
In Amherst, start tomato seeds indoors around February 27–March 13, then transplant seedlings outdoors around May 1 once the danger of frost has passed.
Never miss a window in Amherst
An email when it’s time to start seeds, transplant, and sow — timed to Amherst’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Lorain · 6 km
- Vermilion · 7 km
- Elyria · 11 km
- North Ridgeville · 18 km
- Avon · 19 km
- Avon Lake · 21 km
- Westlake · 26 km
- North Olmsted · 26 km
Frost dates recorded at ELYRIA LORAIN CO AP, 8 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Amherst, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00004849. Retrieved from https://blissgarden.com/ohio/amherst.