When to plant in Cudahy, WI
USDA Zone 6aCudahy, Wisconsin frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 6a means Cudahy sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
The average first fall frost in Cudahy is now 6 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MILWAUKEE MITCHELL 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 Cudahy’s own odds, recorded at MILWAUKEE MITCHELL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 15 | May 1 | Apr 18 | Oct 5 | Oct 18 | Oct 30 |
| 32°F | May 2 | Apr 19 | Apr 6 | Oct 15 | Oct 29 | Nov 10 |
| 28°F | Apr 20 | Apr 6 | Mar 24 | Oct 27 | Nov 8 | Nov 22 |
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 Cudahy, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
Cudahy planting FAQ
When is the last spring frost in Cudahy, WI?
On average, the last spring frost in Cudahy is around April 19 (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 Cudahy, WI?
The first fall frost in Cudahy typically arrives around October 29 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Cudahy in?
Cudahy 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 Cudahy?
There are roughly 193 frost-free days in Cudahy (a moderate growing season), running from the average last frost around April 19 to the first fall frost near October 29.
When should I plant tomatoes in Cudahy?
In Cudahy, start tomato seeds indoors around February 22–March 8, then transplant seedlings outdoors around April 26 once the danger of frost has passed.
Never miss a window in Cudahy
An email when it’s time to start seeds, transplant, and sow — timed to Cudahy’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- South Milwaukee · 4 km
- Oak Creek · 8 km
- Greendale · 11 km
- Greenfield · 12 km
- Franklin · 14 km
- West Allis · 15 km
- Milwaukee · 15 km
- Shorewood · 16 km
Frost dates recorded at MILWAUKEE MITCHELL 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 Cudahy, WI — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014839. Retrieved from https://blissgarden.com/wisconsin/cudahy.