When to plant in Sterling Heights, MI
USDA Zone 6bEverything below — frost dates, hardiness zone, and what to plant when in Sterling Heights, Michigan — is derived from the closest NOAA station with complete climate normals.
Heads up: the nearest complete-normals station is about 18 km from Sterling Heights, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. Zone 6b means Sterling Heights sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
The average first fall frost in Sterling Heights is now 7 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MT CLEMENS ANG BASE · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Sterling Heights’s own odds, recorded at MT CLEMENS ANG BASE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 28 | May 11 | Apr 28 | Sep 26 | Oct 9 | Oct 24 |
| 32°F | May 15 | Apr 30 | Apr 16 | Oct 7 | Oct 24 | Nov 3 |
| 28°F | May 3 | Apr 18 | Apr 3 | Oct 20 | Nov 3 | Nov 15 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Sterling Heights, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Sterling Heights planting FAQ
When is the last spring frost in Sterling Heights, MI?
Plan for the last spring frost in Sterling Heights around April 30 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Sterling Heights, MI?
The first fall frost in Sterling Heights typically arrives around October 24 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Sterling Heights in?
Sterling Heights is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Sterling Heights?
There are roughly 177 frost-free days in Sterling Heights (a moderate growing season), running from the average last frost around April 30 to the first fall frost near October 24.
When should I plant tomatoes in Sterling Heights?
In Sterling Heights, start tomato seeds indoors around March 5–March 19, then transplant seedlings outdoors around May 7 once the danger of frost has passed.
Never miss a window in Sterling Heights
An email when it’s time to start seeds, transplant, and sow — timed to Sterling Heights’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Fraser · 8 km
- Troy · 9 km
- Warren · 10 km
- Madison Heights · 10 km
- Clawson · 11 km
- Roseville · 11 km
- Mount Clemens · 12 km
- Royal Oak · 13 km
Frost dates recorded at MT CLEMENS ANG BASE, 18 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Sterling Heights, MI — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014804. Retrieved from https://blissgarden.com/michigan/sterling-heights.