When to plant in Ashwaubenon, WI
USDA Zone 5bAshwaubenon, Wisconsin frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 5b, Ashwaubenon gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average first fall frost in Ashwaubenon is now 6 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
GREEN BAY · 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 Ashwaubenon’s own odds, recorded at GREEN BAY.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 27 | May 13 | Apr 29 | Sep 16 | Sep 29 | Oct 12 |
| 32°F | May 16 | Apr 30 | Apr 16 | Sep 24 | Oct 9 | Oct 26 |
| 28°F | May 4 | Apr 17 | Apr 3 | Oct 6 | Oct 24 | Nov 9 |
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 Ashwaubenon, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 6 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.
Ashwaubenon planting FAQ
When is the last spring frost in Ashwaubenon, WI?
On average, the last spring frost in Ashwaubenon is around April 30 (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 Ashwaubenon, WI?
Expect Ashwaubenon's first fall frost near October 9 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Ashwaubenon in?
Ashwaubenon 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 Ashwaubenon?
Ashwaubenon has about 162 frost-free days — a moderate growing season — between the average last spring frost (April 30) and first fall frost (October 9).
When should I plant tomatoes in Ashwaubenon?
For Ashwaubenon, sow tomatoes indoors about March 5–March 19 and move the seedlings out around May 7, after the last spring frost.
Never miss a window in Ashwaubenon
An email when it’s time to start seeds, transplant, and sow — timed to Ashwaubenon’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at GREEN BAY, 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 Ashwaubenon, WI — Frost Dates & Zone 5b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014898. Retrieved from https://blissgarden.com/wisconsin/ashwaubenon.