Bield:Farm
Frost dates · Ohio

Ohio frost dates,
county by county.

Last spring frost and first fall frost probability data for all 88 counties in Ohio, computed from the NOAA 1991–2020 Climate Normals. Every county page surfaces the full probability table at three temperature thresholds plus crop-specific planting guidance.

Variation across Ohio

26 days separate the earliest and latest counties.

The median last spring frost in Erie County is April 1 — 26 days earlier than Mahoning County at April 27. Statewide averages aren't useful planting tools; pick your county below for the data that actually applies to your fields.

By geography

Ohio counties on the map.

Each dot is a county. Click for full frost-date detail. Color shows last-spring-frost timing — sage = earliest, amber = latest.

ListMap
Crawford County · Spring Apr 7 · Fall Nov 6 · 213-day seasonMedina County · Spring Apr 17 · Fall Nov 1 · 198-day seasonHancock County · Spring Apr 8 · Fall Nov 3 · 209-day seasonHarrison County · Spring Apr 8 · Fall Nov 4 · 210-day seasonKnox County · Spring Apr 21 · Fall Oct 23 · 185-day seasonDefiance County · Spring Apr 15 · Fall Oct 30 · 198-day seasonGreene County · Spring Apr 5 · Fall Nov 3 · 212-day seasonMarion County · Spring Apr 14 · Fall Nov 1 · 201-day seasonShelby County · Spring Apr 16 · Fall Oct 31 · 198-day seasonSummit County · Spring Apr 20 · Fall Nov 2 · 196-day seasonVan Wert County · Spring Apr 9 · Fall Nov 5 · 210-day seasonWarren County · Spring Apr 11 · Fall Oct 29 · 201-day seasonGuernsey County · Spring Apr 15 · Fall Oct 28 · 196-day seasonDelaware County · Spring Apr 9 · Fall Nov 3 · 208-day seasonGeauga County · Spring Apr 23 · Fall Nov 1 · 192-day seasonPickaway County · Spring Apr 4 · Fall Nov 7 · 217-day seasonPortage County · Spring Apr 9 · Fall Nov 8 · 213-day seasonLicking County · Spring Apr 19 · Fall Oct 27 · 191-day seasonDarke County · Spring Apr 9 · Fall Oct 31 · 205-day seasonSandusky County · Spring Apr 14 · Fall Nov 2 · 202-day seasonHolmes County · Spring Apr 21 · Fall Oct 26 · 188-day seasonHocking County · Spring Apr 19 · Fall Oct 24 · 188-day seasonLucas County · Spring Apr 8 · Fall Nov 7 · 213-day seasonMeigs County · Spring Apr 13 · Fall Oct 26 · 196-day seasonGallia County · Spring Apr 4 · Fall Nov 5 · 215-day seasonHuron County · Spring Apr 12 · Fall Nov 5 · 207-day seasonCarroll County · Spring Apr 17 · Fall Oct 28 · 194-day seasonLogan County · Spring Apr 16 · Fall Oct 30 · 197-day seasonUnion County · Spring Apr 7 · Fall Nov 6 · 213-day seasonAuglaize County · Spring Apr 14 · Fall Nov 3 · 203-day seasonRichland County · Spring Apr 16 · Fall Nov 2 · 200-day seasonWilliams County · Spring Apr 17 · Fall Oct 31 · 197-day seasonBelmont County · Spring Apr 16 · Fall Nov 1 · 199-day seasonHighland County · Spring Apr 12 · Fall Nov 1 · 203-day seasonWood County · Spring Apr 11 · Fall Nov 5 · 208-day seasonColumbiana County · Spring Apr 20 · Fall Oct 26 · 189-day seasonStark County · Spring Apr 13 · Fall Nov 7 · 208-day seasonButler County · Spring Apr 8 · Fall Oct 27 · 202-day seasonWashington County · Spring Apr 5 · Fall Nov 5 · 214-day seasonMontgomery County · Spring Apr 6 · Fall Nov 4 · 212-day seasonAshland County · Spring Apr 18 · Fall Oct 29 · 194-day seasonJefferson County · Spring Apr 18 · Fall Oct 31 · 196-day seasonAdams County · Spring Apr 20 · Fall Oct 21 · 184-day seasonPreble County · Spring Apr 12 · Fall Oct 30 · 201-day seasonPutnam County · Spring Apr 14 · Fall Nov 2 · 202-day seasonRoss County · Spring Apr 6 · Fall Nov 2 · 210-day seasonClark County · Spring Apr 15 · Fall Oct 30 · 198-day seasonScioto County · Spring Apr 7 · Fall Nov 2 · 209-day seasonSeneca County · Spring Apr 11 · Fall Nov 3 · 206-day seasonFairfield County · Spring Apr 15 · Fall Oct 24 · 192-day seasonTrumbull County · Spring Apr 18 · Fall Nov 5 · 201-day seasonTuscarawas County · Spring Apr 16 · Fall Nov 2 · 200-day seasonLorain County · Spring Apr 11 · Fall Nov 4 · 207-day seasonPike County · Spring Apr 9 · Fall Nov 1 · 206-day seasonLawrence County · Spring Apr 18 · Fall Oct 25 · 190-day seasonWayne County · Spring Apr 18 · Fall Oct 28 · 193-day seasonClermont County · Spring Apr 11 · Fall Oct 27 · 199-day seasonCoshocton County · Spring Apr 15 · Fall Oct 29 · 197-day seasonMadison County · Spring Apr 14 · Fall Oct 29 · 198-day seasonCuyahoga County · Spring Apr 1 · Fall Nov 22 · 235-day seasonFranklin County · Spring Apr 8 · Fall Nov 3 · 209-day seasonHamilton County · Spring Apr 4 · Fall Nov 4 · 214-day seasonHardin County · Spring Apr 10 · Fall Nov 3 · 207-day seasonClinton County · Spring Apr 6 · Fall Nov 1 · 209-day seasonAllen County · Spring Apr 14 · Fall Nov 3 · 203-day seasonFulton County · Spring Apr 16 · Fall Oct 29 · 196-day seasonJackson County · Spring Apr 9 · Fall Nov 1 · 206-day seasonAthens County · Spring Apr 11 · Fall Nov 1 · 204-day seasonHenry County · Spring Apr 14 · Fall Nov 1 · 201-day seasonFayette County · Spring Apr 11 · Fall Nov 1 · 204-day seasonMiami County · Spring Apr 5 · Fall Nov 3 · 212-day seasonOttawa County · Spring Apr 14 · Fall Nov 2 · 202-day seasonMorgan County · Spring Apr 15 · Fall Nov 1 · 200-day seasonVinton County · Spring Apr 13 · Fall Oct 26 · 196-day seasonWyandot County · Spring Apr 18 · Fall Oct 28 · 193-day seasonPerry County · Spring Apr 19 · Fall Oct 28 · 192-day seasonChampaign County · Spring Apr 12 · Fall Nov 1 · 203-day seasonLake County · Spring Apr 4 · Fall Nov 21 · 231-day seasonMahoning County · Spring Apr 27 · Fall Oct 26 · 182-day seasonMercer County · Spring Apr 15 · Fall Oct 31 · 199-day seasonPaulding County · Spring Apr 13 · Fall Oct 30 · 200-day seasonMorrow County · Spring Apr 15 · Fall Oct 31 · 199-day seasonMuskingum County · Spring Apr 13 · Fall Oct 31 · 201-day seasonMonroe County · Spring Apr 13 · Fall Nov 3 · 204-day seasonBrown County · Spring Apr 20 · Fall Oct 21 · 184-day seasonAshtabula County · Spring Apr 21 · Fall Nov 3 · 196-day seasonErie County · Spring Apr 1 · Fall Nov 16 · 229-day seasonNoble County · Spring Apr 19 · Fall Oct 27 · 191-day season
Last spring frostEarliestMedianLatest
88 counties · click any county for full frost data
Alphabetical

All Ohio counties — A to Z.

Frost dates set the calendar. Bield: Farm runs it.

Pair these dates with live forecasts for your specific farm location. Bield: Farm logs your soil tests, planting dates, weather, and yield outcomes year over year.

Download Bield: Farm