Frost dates 2026–2027

Frost dates for Frankfort, Indiana

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Frankfort Disposal, 2.1 mi away (close match).

Last spring frostApr 21
First fall frostOct 21
181 frost-free days
Last spring frostApr 211 year in 10 after May 7
First fall frostOct 211 year in 10 by Oct 6
Growing season181 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

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Will it freeze in Frankfort 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 42°F. Above 36°F.

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

4 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 Frankfort

The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at Frankfort Disposal. 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 19 · May 2 · May 17 Sep 27 · Oct 10 · Oct 22 159 days
32°F freeze Apr 7 · Apr 21 · May 7 Oct 6 · Oct 21 · Nov 1 181 days
28°F hard freeze Mar 26 · Apr 7 · Apr 23 Oct 19 · Nov 1 · Nov 14 206 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00123082. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Frankfort Disposal

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 Frankfort, IN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Frankfort Disposal (station USC00123082, elevation 824 ft), 2.1 mi from Frankfort. 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 Frankfort

CityDistanceLast spring frostFirst fall frost
Lebanon, IN 17 mi Apr 21 Oct 20
Lafayette, IN 19 mi Apr 26 Oct 18
Sheridan, IN 21 mi Apr 23 Oct 17
Zionsville, IN 23 mi Apr 21 Oct 20
Whitestown, IN 23 mi Apr 21 Oct 20
West Lafayette, IN 23 mi Apr 26 Oct 18
Kokomo, IN 25 mi Apr 27 Oct 18
Crawfordsville, IN 25 mi Apr 27 Oct 12
Tipton, IN 26 mi Apr 23 Oct 17
Westfield, IN 27 mi Apr 21 Oct 21

Frequently asked questions

When is the last frost in Frankfort?

On average, the last spring frost (32°F) in Frankfort is around April 21. In about 1 year in 10 it comes after May 7, and in 9 years in 10 it comes after April 7.

When is the first frost in Frankfort?

The first fall frost (32°F) usually arrives around October 21. There’s a 10% chance of a freeze by October 6 and a 90% chance by November 1.

Can it frost in Frankfort 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 2.

What growing zone is Frankfort?

Frankfort 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 46041. See growing zones in Indiana.

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