When to plant in Reedsburg, WI
USDA Zone 5aEverything below — frost dates, hardiness zone, and what to plant when in Reedsburg, Wisconsin — is derived from the closest NOAA station with complete climate normals.
In zone 5a, Reedsburg gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
REEDSBURG · 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 Reedsburg’s own odds, recorded at REEDSBURG.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 26 | May 13 | Apr 30 | Sep 15 | Sep 29 | Oct 9 |
| 32°F | May 16 | May 2 | Apr 18 | Sep 23 | Oct 7 | Oct 20 |
| 28°F | May 5 | Apr 20 | Apr 7 | Oct 2 | Oct 18 | Oct 31 |
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 Reedsburg, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 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.
Reedsburg planting FAQ
When is the last spring frost in Reedsburg, WI?
On average, the last spring frost in Reedsburg is around May 2 (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 Reedsburg, WI?
The first fall frost in Reedsburg typically arrives around October 7 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Reedsburg in?
Reedsburg is in USDA hardiness zone 5a. In zone 5a, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Reedsburg?
Reedsburg has about 158 frost-free days — a moderate growing season — between the average last spring frost (May 2) and first fall frost (October 7).
When should I plant tomatoes in Reedsburg?
For Reedsburg, sow tomatoes indoors about March 7–March 21 and move the seedlings out around May 9, after the last spring frost.
Never miss a window in Reedsburg
An email when it’s time to start seeds, transplant, and sow — timed to Reedsburg’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at REEDSBURG, 1 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 Reedsburg, WI — Frost Dates & Zone 5a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00477052. Retrieved from https://blissgarden.com/wisconsin/reedsburg.