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Will it freeze in Brighton in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 30°F (Sat, Nov 7, 6:00 PM EST to Sun, Nov 8, 6:00 AM EST).
Tonight: forecast low 38°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
5 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 38°F Above 36°F · Light Rain Likely
- Fri, Nov 6 34°F Frost possible · Chance Light Rain
- Sat, Nov 7 30°F Freeze · Partly Cloudy
- Sun, Nov 8 33°F Frost possible · Mostly Clear
- Mon, Nov 9 40°F Above 36°F · Mostly Clear
- Tue, Nov 10 35°F Frost possible · Mostly Clear
- Wed, Nov 11 34°F Frost possible · Mostly Cloudy
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 Brighton
The median first fall hard-freeze date (28°F) is October 24, from NOAA’s 1991–2020 Climate Normals at Milford Gm Proving Ground. This is the 50% probability date, not a forecast for this year.
| Temperature | Last 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 18 · May 31 | Sep 19 · Oct 1 · Oct 15 | 136 days |
| 32°F freeze | Apr 21 · May 6 · May 22 | Sep 27 · Oct 12 · Oct 27 | 157 days |
| 28°F hard freeze | Apr 11 · Apr 26 · May 11 | Oct 8 · Oct 24 · Nov 6 | 179 days |
Average high temperature by month
1991–2020 normals at Milford Gm Proving Ground
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 Brighton, MI come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Milford Gm Proving Ground (station USC00205452, elevation 970 ft), 6.2 mi from Brighton. 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 Brighton
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| South Lyon, MI | 8.1 mi | May 5 | Oct 13 |
| Howell, MI | 9.3 mi | May 4 | Oct 7 |
| Milford, MI | 9.9 mi | May 6 | Oct 12 |
| Wixom, MI | 13 mi | May 6 | Oct 12 |
| Novi, MI | 16 mi | May 1 | Oct 17 |
| Walled Lake, MI | 16 mi | May 1 | Oct 17 |
| Northville, MI | 16 mi | May 1 | Oct 17 |
| Ann Arbor, MI | 18 mi | May 5 | Oct 10 |
| Fenton, MI | 19 mi | May 3 | Oct 12 |
| Chelsea, MI | 19 mi | Apr 30 | Oct 12 |
Frequently asked questions
When is the last frost in Brighton?
On average, the last spring frost (32°F) in Brighton is around May 6. In about 1 year in 10 it comes after May 22, and in 9 years in 10 it comes after April 21.
When is the first frost in Brighton?
The first fall frost (32°F) usually arrives around October 12. There’s a 10% chance of a freeze by September 27 and a 90% chance by October 27.
Can it frost in Brighton 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 18.
What growing zone is Brighton?
Brighton 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 48116. See growing zones in Michigan.
More: all Michigan frost dates · Michigan growing zones · frost vs. freeze