When to plant in Hudson, WI
USDA Zone 4bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Hudson, Wisconsin — all computed from Hudson's nearest NOAA weather station.
In zone 4b, Hudson winters are severe; choose cold-hardy perennials and time annuals carefully around the frost dates above.
The average first fall frost in Hudson is now 7 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
STILLWATER 1 SE · 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 Hudson’s own odds, recorded at STILLWATER 1 SE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 17 | May 2 | Apr 19 | Sep 25 | Oct 8 | Oct 23 |
| 32°F | May 6 | Apr 22 | Apr 7 | Oct 3 | Oct 19 | Nov 3 |
| 28°F | Apr 27 | Apr 12 | Mar 31 | Oct 15 | Oct 30 | Nov 11 |
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 Hudson, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Hudson planting FAQ
When is the last spring frost in Hudson, WI?
On average, the last spring frost in Hudson is around April 22 (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 Hudson, WI?
The first fall frost in Hudson typically arrives around October 19 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Hudson in?
Hudson 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 Hudson?
Hudson has about 180 frost-free days — a moderate growing season — between the average last spring frost (April 22) and first fall frost (October 19).
When should I plant tomatoes in Hudson?
For Hudson, sow tomatoes indoors about February 25–March 11 and move the seedlings out around April 29, after the last spring frost.
Never miss a window in Hudson
An email when it’s time to start seeds, transplant, and sow — timed to Hudson’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Stillwater · 13 km
- River Falls · 14 km
- Lake Elmo · 14 km
- Woodbury · 17 km
- Oakdale · 19 km
- North St. Paul · 22 km
- Cottage Grove · 22 km
- New Richmond · 23 km
Frost dates recorded at STILLWATER 1 SE, 10 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 Hudson, WI — Frost Dates & Zone 4b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00218037. Retrieved from https://blissgarden.com/wisconsin/hudson.