Frost dates 2026–2027

Frost dates for Clawson, Michigan

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Pontiac Wastewater Plant, 8.9 mi away (close match).

Last spring frostApr 26
First fall frostOct 22
177 frost-free days
Last spring frostApr 261 year in 10 after May 12
First fall frostOct 221 year in 10 by Oct 7
Growing season177 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Clawson in the next 7 nights?

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

Tonight: forecast low 43°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 Clawson

The median first fall hard-freeze date (28°F) is November 4, from NOAA’s 1991–2020 Climate Normals at Pontiac Wastewater Plant. 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 22 · May 5 · May 22 Sep 28 · Oct 10 · Oct 23 157 days
32°F freeze Apr 15 · Apr 26 · May 12 Oct 7 · Oct 22 · Nov 4 177 days
28°F hard freeze Apr 3 · Apr 16 · Apr 30 Oct 20 · Nov 4 · Nov 17 200 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00206658. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Pontiac Wastewater Plant

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 Clawson, MI come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Pontiac Wastewater Plant (station USC00206658, elevation 890 ft), 8.9 mi from Clawson. 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 Clawson

CityDistanceLast spring frostFirst fall frost
Royal Oak, MI 1.9 mi Apr 21 Oct 31
Madison Heights, MI 3.1 mi Apr 21 Oct 31
Berkley, MI 3.1 mi May 1 Oct 17
Troy, MI 3.1 mi Apr 26 Oct 22
Birmingham, MI 3.1 mi Apr 26 Oct 22
Huntington Woods, MI 3.7 mi Apr 27 Oct 25
Beverly Hills, MI 5.0 mi May 1 Oct 17
Oak Park, MI 5.0 mi Apr 27 Oct 25
Ferndale, MI 5.6 mi Apr 21 Oct 31
Hazel Park, MI 5.6 mi Apr 21 Oct 31

Frequently asked questions

When is the last frost in Clawson?

On average, the last spring frost (32°F) in Clawson is around April 26. In about 1 year in 10 it comes after May 12, and in 9 years in 10 it comes after April 15.

When is the first frost in Clawson?

The first fall frost (32°F) usually arrives around October 22. There’s a 10% chance of a freeze by October 7 and a 90% chance by November 4.

Can it frost in Clawson 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 5.

What growing zone is Clawson?

Clawson 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 48017. See growing zones in Michigan.

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