Frost dates 2026–2027

Frost dates for Danville, Illinois

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Danville, 2.0 mi away (close match).

Last spring frostApr 21
First fall frostOct 20
181 frost-free days
Last spring frostApr 211 year in 10 after May 7
First fall frostOct 201 year in 10 by Oct 6
Growing season181 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

Checking current alerts… View NWS forecast and alerts.

Will it freeze in Danville in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 31°F (Sat, Nov 7, 6:00 PM CST to Sun, Nov 8, 6:00 AM CST).

Tonight: forecast low 41°F. Above 36°F.

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

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 Danville

The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at Danville. 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 18 · May 3 · May 19 Sep 28 · Oct 10 · Oct 22 160 days
32°F freeze Apr 6 · Apr 21 · May 7 Oct 6 · Oct 20 · Nov 1 181 days
28°F hard freeze Mar 25 · Apr 8 · Apr 24 Oct 17 · Oct 31 · Nov 13 205 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00112140. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Danville

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 Danville, IL come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Danville (station USC00112140, elevation 555 ft), 2.0 mi from Danville. 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 Danville

CityDistanceLast spring frostFirst fall frost
Rantoul, IL 31 mi Apr 21 Oct 18
Urbana, IL 31 mi Apr 15 Oct 24
Savoy, IL 35 mi Apr 19 Oct 17
Champaign, IL 35 mi Apr 15 Oct 24
Paris, IL 37 mi Apr 21 Oct 20
Crawfordsville, IN 39 mi Apr 27 Oct 12
Mahomet, IL 41 mi Apr 23 Oct 13
West Lafayette, IN 42 mi Apr 26 Oct 18
Lafayette, IN 43 mi Apr 26 Oct 18
Terre Haute, IN 48 mi Apr 15 Oct 19

Frequently asked questions

When is the last frost in Danville?

On average, the last spring frost (32°F) in Danville 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 6.

When is the first frost in Danville?

The first fall frost (32°F) usually arrives around October 20. There’s a 10% chance of a freeze by October 6 and a 90% chance by November 1.

Can it frost in Danville 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 3.

What growing zone is Danville?

Danville 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 61832. See growing zones in Illinois.

More: all Illinois frost dates · Illinois growing zones · UV index today in Danville · frost vs. freeze