Frost dates for Platteville, Wisconsin
In a typical year, Platteville’s last spring frost lands around Apr 30 and the first fall frost around Oct 13, a growing season of about 166 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 5a.
Right now the typical frost season has arrived; planting waits for spring.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Apr 14 | Sep 29 |
| 50 percent | Apr 30 | Oct 13 |
| 90 percent | May 13 | Oct 24 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Platteville is typically around 48°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Platteville
- Garlic (Music)
Timing comes from the same temperature engine the app uses, run against Platteville’s normals for today.
Common questions
When is the last frost in Platteville, Wisconsin?
Platteville’s last spring frost falls around April 30 in a typical year. One year in ten it is done by April 14, and one year in ten frost holds on until May 13. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in Platteville?
The first fall frost arrives around October 13 in a typical year, as early as September 29 in an early year and as late as October 24 in a late one.
How long is the growing season in Platteville?
About 166 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is Platteville in?
Platteville is in USDA hardiness zone 5a under the 2023 USDA Plant Hardiness Zone Map.
Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.
Nearby cities
- Dubuque, IA (around Apr 19 to Oct 21)
- Madison, WI (around May 1 to Oct 9)
- Cedar Rapids, IA (around Apr 28 to Oct 12)
- Rockford, IL (around Apr 24 to Oct 17)
- Davenport, IA (around Apr 23 to Oct 15)
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