When to plant in Marshfield, WI
USDA Zone 4bMarshfield, Wisconsin frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 4b is cold — in Marshfield, most perennials must be fully hardy, and your frost dates set a tight window for tender annual vegetables.
Frost probability
MARSHFIELD MUNI AP · 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 Marshfield’s own odds, recorded at MARSHFIELD MUNI AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 31 | May 17 | May 4 | Sep 12 | Sep 26 | Oct 9 |
| 32°F | May 20 | May 5 | Apr 22 | Sep 21 | Oct 5 | Oct 18 |
| 28°F | May 10 | Apr 23 | Apr 7 | Sep 30 | Oct 16 | Oct 30 |
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 Marshfield, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 32 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.
Marshfield planting FAQ
When is the last spring frost in Marshfield, WI?
On average, the last spring frost in Marshfield is around May 5 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Marshfield, WI?
The first fall frost in Marshfield typically arrives around October 5 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Marshfield in?
Marshfield is in USDA hardiness zone 4b. In zone 4b, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Marshfield?
There are roughly 153 frost-free days in Marshfield (a moderate growing season), running from the average last frost around May 5 to the first fall frost near October 5.
When should I plant tomatoes in Marshfield?
In Marshfield, start tomato seeds indoors around March 10–March 24, then transplant seedlings outdoors around May 12 once the danger of frost has passed.
Never miss a window in Marshfield
An email when it’s time to start seeds, transplant, and sow — timed to Marshfield’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Wisconsin Rapids · 41 km
- Stevens Point · 52 km
- Wausau · 53 km
- Plover · 55 km
- Weston · 55 km
- Chippewa Falls · 101 km
- Eau Claire · 106 km
- Holmen · 116 km
Frost dates recorded at MARSHFIELD MUNI AP, 3 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 Marshfield, WI — Frost Dates & Zone 4b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00094985. Retrieved from https://blissgarden.com/wisconsin/marshfield.