Frost dates for Caldwell 3Se, Ohio
Half of years have their last spring frost by April 30 — but 1 year in 10 still frosts after May 20.
Every other site gives you one date. A frost date is not a date: it is a percentile from 30 years of records at a nearby weather station, and planting to the median means losing the crop in half of years. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
- Frost this late in 1 year in 10
- May 20
- 1 year in 5
- May 13
- 3 years in 10
- May 8
- 2 years in 5
- May 5
- Half of years (the median)
- April 30
First fall freeze
- Freeze this early in 1 year in 10
- September 30
- 1 year in 5
- October 3
- 3 years in 10
- October 7
- 2 years in 5
- October 11
- Half of years (the median)
- October 14
- Growing season
- about 167 days
- Hardiness zone nearby
- 6b
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, station Caldwell 3Se (USC00331175), at 39.72, -81.46. These are that station's own records, unshifted. The further your garden is from it, the less exactly they describe your ground — the planner resolves the nearest station to your own ZIP and lowers its confidence with distance, rather than presenting one number as if it were measured in your yard.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a hundred metres away does not. No table can know that about your garden. Your own logged frosts eventually can.
ZIP codes nearest this station
43711, 43713, 43717, 43722, 43723, 43724, 43732, 43733, 43750, 43754, 43755, 43768, 43772, 43773, 43778, 43779, 43780, 43786, 43788, 45715, 45721, 45727, 45734, 45744, 45745, 45746.
What can I plant here, and when? →
Nearby stations
The nearest stations, and how their last-frost dates compare — the frost gradient across your area, which no single station shows.
- New Lexington 2 Nw, OH — last frost by April 30
- Dennison Wtr Wks, OH — last frost by April 29
- Wheeling Ohio Co Ap, WV — last frost by April 23
- Carpenter 2 S, OH — last frost by April 27
- Burton, WV — last frost by May 4
- Lancaster Fairfield Ap, OH — last frost by April 26
Other stations in Ohio.
- Wooster 3 Sse, OH — last frost by April 24
- Millport 4 Ne Hcn, OH — last frost by May 2
- Akron Canton Rgnl Ap, OH — last frost by April 24
- Ravenna 2 S, OH — last frost by April 21
- Marysville, OH — last frost by April 19
- Mosquito Creek Lake, OH — last frost by April 30
- Cleveland, OH — last frost by April 20
- Cleveland Burke Ap, OH — last frost by April 8