When to plant in Mount Pleasant, WI
USDA Zone 5bMount Pleasant, Wisconsin frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 5b means Mount Pleasant sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
RACINE · 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 Mount Pleasant’s own odds, recorded at RACINE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 21 | May 4 | Apr 20 | Sep 29 | Oct 13 | Oct 27 |
| 32°F | May 6 | Apr 20 | Apr 7 | Oct 8 | Oct 24 | Nov 5 |
| 28°F | Apr 23 | Apr 9 | Mar 28 | Oct 19 | Nov 3 | Nov 16 |
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 Mount Pleasant, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 12 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.
Mount Pleasant planting FAQ
When is the last spring frost in Mount Pleasant, WI?
Mount Pleasant's average last spring frost falls near April 20 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Mount Pleasant, WI?
In Mount Pleasant, the first 32°F freeze of fall lands around October 24 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Mount Pleasant in?
Mount Pleasant is in USDA hardiness zone 5b. In zone 5b, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Mount Pleasant?
There are roughly 187 frost-free days in Mount Pleasant (a moderate growing season), running from the average last frost around April 20 to the first fall frost near October 24.
When should I plant tomatoes in Mount Pleasant?
In Mount Pleasant, start tomato seeds indoors around February 23–March 9, then transplant seedlings outdoors around April 27 once the danger of frost has passed.
Never miss a window in Mount Pleasant
An email when it’s time to start seeds, transplant, and sow — timed to Mount Pleasant’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Racine · 6 km
- Caledonia · 10 km
- Kenosha · 13 km
- Oak Creek · 19 km
- Pleasant Prairie · 20 km
- Franklin · 22 km
- South Milwaukee · 23 km
- Cudahy · 27 km
Frost dates recorded at RACINE, 8 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 Mount Pleasant, WI — Frost Dates & Zone 5b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00476922. Retrieved from https://blissgarden.com/wisconsin/mount-pleasant.