Frost dates 2026–2027

Frost dates for Martinsville, Indiana

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Martinsville 2 SW, 1.4 mi away (close match).

Last spring frostApr 24
First fall frostOct 15
173 frost-free days
Last spring frostApr 241 year in 10 after May 11
First fall frostOct 151 year in 10 by Oct 2
Growing season173 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

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Will it freeze in Martinsville in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 32°F (Fri, Nov 6, 6:00 PM EST to Sat, Nov 7, 6:00 AM EST).

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.

3 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 Martinsville

The median first fall hard-freeze date (28°F) is October 26, from NOAA’s 1991–2020 Climate Normals at Martinsville 2 SW. 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 20 · May 4 · May 21 Sep 24 · Oct 6 · Oct 19 154 days
32°F freeze Apr 10 · Apr 24 · May 11 Oct 2 · Oct 15 · Oct 29 173 days
28°F hard freeze Mar 29 · Apr 12 · Apr 30 Oct 12 · Oct 26 · Nov 7 194 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00125407. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Martinsville 2 SW

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 Martinsville, IN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Martinsville 2 SW (station USC00125407, elevation 592 ft), 1.4 mi from Martinsville. 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 Martinsville

CityDistanceLast spring frostFirst fall frost
Mooresville, IN 14 mi Apr 12 Oct 27
Bargersville, IN 15 mi Apr 20 Oct 19
Ellettsville, IN 16 mi Apr 15 Oct 26
Bloomington, IN 18 mi Apr 15 Oct 26
Plainfield, IN 19 mi Apr 12 Oct 27
New Whiteland, IN 21 mi Apr 20 Oct 19
Franklin, IN 21 mi Apr 20 Oct 19
Whiteland, IN 21 mi Apr 20 Oct 19
Greenwood, IN 22 mi Apr 20 Oct 21
Avon, IN 24 mi Apr 12 Oct 29

Frequently asked questions

When is the last frost in Martinsville?

On average, the last spring frost (32°F) in Martinsville is around April 24. In about 1 year in 10 it comes after May 11, and in 9 years in 10 it comes after April 10.

When is the first frost in Martinsville?

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 29.

Can it frost in Martinsville 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 4.

What growing zone is Martinsville?

Martinsville is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 46151. See growing zones in Indiana.

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