When to plant in Upper Arlington, OH
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Upper Arlington, Ohio — all computed from Upper Arlington's nearest NOAA weather station.
In zone 6b, Upper Arlington gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
COLUMBUS WCMH · 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 Upper Arlington’s own odds, recorded at COLUMBUS WCMH.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 19 | Apr 30 | Apr 17 | Sep 29 | Oct 13 | Oct 25 |
| 32°F | May 7 | Apr 20 | Apr 5 | Oct 13 | Oct 24 | Nov 4 |
| 28°F | Apr 25 | Apr 8 | Mar 24 | Oct 22 | Nov 3 | Nov 16 |
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 Upper Arlington, 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.
Upper Arlington planting FAQ
When is the last spring frost in Upper Arlington, OH?
Plan for the last spring frost in Upper Arlington around April 20 (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 Upper Arlington, OH?
The first fall frost in Upper Arlington typically arrives around October 24 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Upper Arlington in?
Upper Arlington 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 Upper Arlington?
Upper Arlington has about 187 frost-free days — a moderate growing season — between the average last spring frost (April 20) and first fall frost (October 24).
When should I plant tomatoes in Upper Arlington?
For Upper Arlington, sow tomatoes indoors about February 23–March 9 and move the seedlings out around April 27, after the last spring frost.
Never miss a window in Upper Arlington
An email when it’s time to start seeds, transplant, and sow — timed to Upper Arlington’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Hilliard · 7 km
- Columbus · 9 km
- Worthington · 9 km
- Dublin · 11 km
- Bexley · 14 km
- Powell · 16 km
- Gahanna · 16 km
- Westerville · 17 km
Frost dates recorded at COLUMBUS WCMH, 4 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 Upper Arlington, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00331785. Retrieved from https://blissgarden.com/ohio/upper-arlington.