When to plant in Newark, OH
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Newark, Ohio — all computed from Newark's nearest NOAA weather station.
Zone 6a means Newark sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
NEWARK WTR WKS · 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 Newark’s own odds, recorded at NEWARK WTR WKS.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 25 | May 9 | Apr 24 | Sep 21 | Oct 4 | Oct 16 |
| 32°F | May 17 | Apr 29 | Apr 17 | Oct 1 | Oct 16 | Oct 28 |
| 28°F | May 3 | Apr 19 | Apr 3 | Oct 13 | Oct 27 | Nov 9 |
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 Newark, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 31 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.
Newark planting FAQ
When is the last spring frost in Newark, OH?
Plan for the last spring frost in Newark around April 29 (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 Newark, OH?
The first fall frost in Newark typically arrives around October 16 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Newark in?
Newark is in USDA hardiness zone 6a. In zone 6a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Newark?
There are roughly 170 frost-free days in Newark (a moderate growing season), running from the average last frost around April 29 to the first fall frost near October 16.
When should I plant tomatoes in Newark?
In Newark, start tomato seeds indoors around March 4–March 18, then transplant seedlings outdoors around May 6 once the danger of frost has passed.
Never miss a window in Newark
An email when it’s time to start seeds, transplant, and sow — timed to Newark’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Heath · 6 km
- Pataskala · 26 km
- New Albany · 30 km
- Reynoldsburg · 33 km
- Mount Vernon · 35 km
- Pickerington · 35 km
- Zanesville · 37 km
- Gahanna · 39 km
Frost dates recorded at NEWARK WTR WKS, 2 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 Newark, OH — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00335747. Retrieved from https://blissgarden.com/ohio/newark.