When to plant in Sheboygan, WI
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Sheboygan, Wisconsin — all computed from Sheboygan's nearest NOAA weather station.
In zone 6a, Sheboygan gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
SHEBOYGAN · 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 Sheboygan’s own odds, recorded at SHEBOYGAN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 21 | May 5 | Apr 22 | Sep 30 | Oct 11 | Oct 23 |
| 32°F | May 11 | Apr 25 | Apr 11 | Oct 9 | Oct 23 | Nov 2 |
| 28°F | Apr 27 | Apr 13 | Mar 31 | Oct 21 | Nov 1 | 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 Sheboygan, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 10 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.
Sheboygan planting FAQ
When is the last spring frost in Sheboygan, WI?
Plan for the last spring frost in Sheboygan around April 25 (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 Sheboygan, WI?
In Sheboygan, the first 32°F freeze of fall lands around October 23 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Sheboygan in?
Sheboygan is in USDA hardiness zone 6a. In zone 6a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Sheboygan?
Sheboygan has about 181 frost-free days — a moderate growing season — between the average last spring frost (April 25) and first fall frost (October 23).
When should I plant tomatoes in Sheboygan?
For Sheboygan, sow tomatoes indoors about February 28–March 14 and move the seedlings out around May 2, after the last spring frost.
Never miss a window in Sheboygan
An email when it’s time to start seeds, transplant, and sow — timed to Sheboygan’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Manitowoc · 40 km
- Port Washington · 41 km
- Two Rivers · 48 km
- Grafton · 50 km
- West Bend · 51 km
- Cedarburg · 53 km
- Fond du Lac · 57 km
- Mequon · 63 km
Frost dates recorded at SHEBOYGAN, 2 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 Sheboygan, WI — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00477725. Retrieved from https://blissgarden.com/wisconsin/sheboygan.