Frost dates for Caldwell 3 SE, Ohio
Half of years have their last spring frost by April 30, but 1 year in 10 still frosts after May 20.
A frost date is really a percentile from 30 years of records at a nearby weather station: in about half of years a frost still comes after the median date. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
How often a frost still comes on or after each date.
- 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
How often the first freeze comes on or before each date.
- 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
- Summer days
- a usual high of about 27 °C81 °F
- Lettuce and spinach run to seed
- June to September, in hot, long days (how we know)
Summer heat
Month by month
- January
- high ~4 °C39 °F · low ~-7 °C20 °F
- February
- high ~6 °C42 °F · low ~-6 °C22 °F
- March
- high ~11 °C53 °F · low ~-2 °C28 °F
- April
- high ~18 °C64 °F · low ~3 °C38 °F
- May
- high ~23 °C73 °F · low ~9 °C48 °F
- June
- high ~27 °C80 °F · low ~14 °C57 °F
- July
- high ~28 °C82 °F · low ~16 °C62 °F
- August
- high ~28 °C82 °F · low ~15 °C59 °F
- September
- high ~25 °C77 °F · low ~11 °C52 °F
- October
- high ~19 °C66 °F · low ~5 °C41 °F
- November
- high ~12 °C54 °F · low ~0 °C31 °F
- December
- high ~6 °C44 °F · low ~-4 °C25 °F
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Caldwell 3 SE station (listed by NOAA as 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 finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.
ZIP codes nearest this station
43711, 43717, 43722, 43723, 43724, 43732, 43733, 43750, 43754, 43755, 43768, 43772…
+15 moreShow fewer
43773, 43778, 43779, 43780, 43786, 43788, 45715, 45721, 45727, 45734, 45744, 45745, 45746, 45788, 45789.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- New Lexington 2 NW, OH, last frost by April 30
- Dennison Wtr Wks, OH, last frost by April 29
- Burton, WV, last frost by May 4
- Spencer, WV, last frost by April 30
- Clarksburg Benedum Airport, WV, last frost by April 18
- Washington 3 NE, PA, last frost by April 24
Other stations in Ohio.
- Wooster 3 SSE, OH, last frost by April 24
- Columbus-Valley Crossing, OH, last frost by April 23
- Millport 4 NE, OH, last frost by May 2
- Akron Canton Regional Airport, OH, last frost by April 24
- Stow 4 SE, OH, last frost by April 30
- Ravenna 2 S, OH, last frost by April 21
- Marysville, OH, last frost by April 19
- Cleveland, OH, last frost by April 20
When do I plant? · Where the dates come from
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