Frost dates 2026–2027

Frost dates for Cherokee, Iowa

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Cherokee, 0.9 mi away (close match).

Last spring frostMay 4
First fall frostOct 4
152 frost-free days
Last spring frostMay 41 year in 10 after May 17
First fall frostOct 41 year in 10 by Sep 20
Growing season152 daysbetween median 32°F dates
Hardiness zoneZone 5a−20 to −15°F average extreme low

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Will it freeze in Cherokee in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 29°F (Fri, Nov 6, 6:00 PM CST to Sat, Nov 7, 6:00 AM CST).

Tonight: forecast low 34°F. Frost possible.

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 Cherokee

The median first fall hard-freeze date (28°F) is October 15, from NOAA’s 1991–2020 Climate Normals at Cherokee. 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 30 · May 13 · May 25 Sep 12 · Sep 25 · Oct 7 135 days
32°F freeze Apr 20 · May 4 · May 17 Sep 20 · Oct 4 · Oct 18 152 days
28°F hard freeze Apr 9 · Apr 24 · May 7 Sep 30 · Oct 15 · Oct 28 172 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00131442. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Cherokee

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 Cherokee, IA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Cherokee (station USC00131442, elevation 1,210 ft), 0.9 mi from Cherokee. 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 Cherokee

CityDistanceLast spring frostFirst fall frost
Storm Lake, IA 19 mi Apr 25 Oct 13
Orange City, IA 31 mi Apr 30 Oct 3
Le Mars, IA 32 mi Apr 30 Oct 4
Sheldon, IA 33 mi May 5 Sep 28
Spencer, IA 34 mi May 1 Oct 3
Sioux Center, IA 39 mi Apr 30 Oct 3
Sioux City, IA 46 mi Apr 29 Oct 7
Sergeant Bluff, IA 47 mi Apr 29 Oct 7
South Sioux City, NE 48 mi Apr 29 Oct 7
Spirit Lake, IA 51 mi Apr 28 Oct 11

Frequently asked questions

When is the last frost in Cherokee?

On average, the last spring frost (32°F) in Cherokee is around May 4. In about 1 year in 10 it comes after May 17, and in 9 years in 10 it comes after April 20.

When is the first frost in Cherokee?

The first fall frost (32°F) usually arrives around October 4. There’s a 10% chance of a freeze by September 20 and a 90% chance by October 18.

Can it frost in Cherokee 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 13.

What growing zone is Cherokee?

Cherokee is in USDA Plant Hardiness Zone 5a (average annual extreme minimum temperature −20 to −15°F), based on the 2023 USDA map for ZIP code 51012. See growing zones in Iowa.

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