Frost dates 2026–2027

Frost dates for Dover, Ohio

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at New Philadelphia, 3.9 mi away (close match).

Last spring frostApr 30
First fall frostOct 15
167 frost-free days
Last spring frostApr 301 year in 10 after May 17
First fall frostOct 151 year in 10 by Oct 2
Growing season167 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Dover in the next 7 nights?

No overnight lows at or below 32°F are forecast in Dover during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 45°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.

5 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.

Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.

Frost and freeze probabilities

Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.

These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.

Average first hard freeze in Dover

The median first fall hard-freeze date (28°F) is October 25, from NOAA’s 1991–2020 Climate Normals at New Philadelphia. This is the 50% probability date, not a forecast for this year.

TemperatureLast spring date
90% · 50% · 10% chance of a later freeze
First fall date
10% · 50% · 90% chance of an earlier freeze
Season
36°F frost possible Apr 27 · May 10 · May 26 Sep 24 · Oct 5 · Oct 17 148 days
32°F freeze Apr 18 · Apr 30 · May 17 Oct 2 · Oct 15 · Oct 27 167 days
28°F hard freeze Apr 7 · Apr 21 · May 6 Oct 11 · Oct 25 · Nov 8 187 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00335894. How to read these probabilities.

Average high temperature by month

1991–2020 normals at New Philadelphia

Average low temperature by month

Months with lows near or below freezing carry frost risk

Where these frost dates come from

The frost dates for Dover, OH come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: New Philadelphia (station USC00335894, elevation 925 ft), 3.9 mi from Dover. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.

Frost dates near Dover

CityDistanceLast spring frostFirst fall frost
New Philadelphia, OH 3.7 mi Apr 30 Oct 15
Uhrichsville, OH 11 mi Apr 29 Oct 15
Massillon, OH 18 mi Apr 24 Oct 26
Canton, OH 20 mi Apr 24 Oct 26
Louisville, OH 24 mi Apr 24 Oct 26
North Canton, OH 24 mi Apr 24 Oct 26
Canal Fulton, OH 25 mi Apr 24 Oct 26
Coshocton, OH 27 mi Apr 27 Oct 18
Orrville, OH 27 mi Apr 29 Oct 14
Green, OH 29 mi Apr 24 Oct 26

Frequently asked questions

When is the last frost in Dover?

On average, the last spring frost (32°F) in Dover is around April 30. In about 1 year in 10 it comes after May 17, and in 9 years in 10 it comes after April 18.

When is the first frost in Dover?

The first fall frost (32°F) usually arrives around October 15. There’s a 10% chance of a freeze by October 2 and a 90% chance by October 27.

Can it frost in Dover after the last frost date?

Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 10.

What growing zone is Dover?

Dover is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 44622. See growing zones in Ohio.

More: all Ohio frost dates · Ohio growing zones · frost vs. freeze