Frost dates 2026–2027

Frost dates for Center Line, Michigan

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Detroit City Airport, 5.0 mi away (close match).

Last spring frostApr 21
First fall frostOct 31
190 frost-free days
Last spring frostApr 211 year in 10 after May 6
First fall frostOct 311 year in 10 by Oct 17
Growing season190 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Center Line in the next 7 nights?

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

Tonight: forecast low 41°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 Center Line

The median first fall hard-freeze date (28°F) is November 9, from NOAA’s 1991–2020 Climate Normals at Detroit City Airport. 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 1 · May 18 Oct 2 · Oct 18 · Oct 31 167 days
32°F freeze Apr 7 · Apr 21 · May 6 Oct 17 · Oct 31 · Nov 11 190 days
28°F hard freeze Mar 27 · Apr 8 · Apr 22 Oct 29 · Nov 9 · Nov 23 214 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014822. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Detroit City Airport

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 Center Line, MI come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Detroit City Airport (station USW00014822, elevation 626 ft), 5.0 mi from Center Line. 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 Center Line

CityDistanceLast spring frostFirst fall frost
Warren, MI 0.6 mi Apr 21 Oct 31
Hazel Park, MI 3.7 mi Apr 21 Oct 31
Eastpointe, MI 4.3 mi Apr 29 Oct 22
Madison Heights, MI 4.3 mi Apr 21 Oct 31
Roseville, MI 5.0 mi Apr 29 Oct 22
Ferndale, MI 5.6 mi Apr 21 Oct 31
Fraser, MI 5.6 mi Apr 30 Oct 24
Harper Woods, MI 5.6 mi Apr 29 Oct 22
Hamtramck, MI 6.2 mi Apr 21 Oct 31
Highland Park, MI 6.2 mi Apr 21 Oct 31

Frequently asked questions

When is the last frost in Center Line?

On average, the last spring frost (32°F) in Center Line is around April 21. In about 1 year in 10 it comes after May 6, and in 9 years in 10 it comes after April 7.

When is the first frost in Center Line?

The first fall frost (32°F) usually arrives around October 31. There’s a 10% chance of a freeze by October 17 and a 90% chance by November 11.

Can it frost in Center Line 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 1.

What growing zone is Center Line?

Center Line 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 48015. See growing zones in Michigan.

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