Forestville, WI frost dates
Last spring frostMay 6median date
First fall frostOct 17median date
Growing season164 daysfrost-free
Hardiness zone5bZone 5b
How Forestville compares
- In 8 years out of 10, the last spring frost in Forestville falls between April 22 and May 20, a 28-day window. The first fall frost falls between October 1 and November 2.
- The median last frost is 1 day later than the Wisconsin median of May 5.
- Its 164-day growing season is longer than 72% of the 749 Wisconsin places with a regular frost season (state median 155 days).
- The last frost is 5 days later than the zone 5b median of May 1. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5b chart.
- The weather station records an average of 148 nights a year at or below 32°F.
- Compared with Green Bay, WI, 46 km away, the last frost here is 6 days later than there and the growing season is 2 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 22 |
| 50% (median) | May 6 |
| 10% (safe for tender plants) | May 20 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 1 |
| 50% (median) | October 17 |
| 90% (late) | November 2 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Forestville, WI
Forestville, WI frost dates — last frost May 6, first frost Oct 17, zone 5b. whenisthelastfrost.com
Crop
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Start indoors: Feb 11 to Feb 25Transplant outside: Apr 8 to Apr 22
Start indoors: Feb 25 to Mar 11Transplant outside: May 20 to Jun 3
Start indoors: Feb 25 to Mar 11Transplant outside: May 20 to Jun 3
Start indoors: Mar 11 to Mar 25Transplant outside: May 13 to May 27
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 15 to Apr 29Sow outdoors: Apr 8 to May 13Plant for fall: Aug 22 to Sep 19
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 8 to Apr 22Sow outdoors: Apr 8 to Apr 22Plant for fall: Aug 8 to Aug 29
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 22 to May 6Plant for fall: Jul 11 to Aug 1
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 15 to Apr 29Plant for fall: Jul 11 to Aug 1
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 22 to May 6Plant for fall: Jul 11 to Aug 1
Start indoors: Mar 25 to Apr 8Transplant outside: May 27 to Jun 10Sow outdoors: May 27 to Jun 10
Start indoors: Mar 25 to Apr 8Transplant outside: May 13 to May 27
Sow outdoors: Mar 25 to Apr 15Plant for fall: Jul 25 to Aug 15
Sow outdoors: Mar 25 to Apr 15Plant for fall: Aug 22 to Sep 12
Sow outdoors: Apr 1 to May 13Plant for fall: Sep 5 to Sep 26
Start indoors: Apr 8 to Apr 15Transplant outside: May 20 to May 27Sow outdoors: May 13 to May 27Plant for fall: Aug 1 to Aug 15
Start indoors: Apr 8 to Apr 15Sow outdoors: May 13 to May 27Plant for fall: Aug 8 to Aug 22
Start indoors: Apr 8 to Apr 15Sow outdoors: May 13 to May 27
Start indoors: Apr 8 to Apr 15Transplant outside: May 20 to Jun 3
Sow outdoors: Apr 15 to May 13Plant for fall: Jul 25 to Aug 8
Sow outdoors: Apr 15 to May 13Plant for fall: Aug 8 to Aug 22
Sow outdoors: Apr 15 to May 6
Sow outdoors: Apr 22 to May 20Plant for fall: Aug 8 to Aug 22
Sow outdoors: Apr 22 to May 13Plant for fall: Aug 22 to Sep 12
Sow outdoors: May 13 to Jun 3Plant for fall: Aug 1 to Aug 15
Sow outdoors: May 13 to May 27
Transplant outside: May 20 to Jun 10
Plant for fall: Oct 3 to Nov 7
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Forestville, WI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 11 – Feb 25 | Apr 8 – Apr 22 | — | — |
| Peppers | Feb 25 – Mar 11 | May 20 – Jun 3 | — | — |
| Eggplant | Feb 25 – Mar 11 | May 20 – Jun 3 | — | — |
| Tomatoes | Mar 11 – Mar 25 | May 13 – May 27 | — | — |
| Lettuce | Mar 11 – Mar 25 | Apr 15 – Apr 29 | Apr 8 – May 13 | Aug 22 – Sep 19 |
| Kale | Mar 11 – Mar 25 | Apr 8 – Apr 22 | Apr 8 – Apr 22 | Aug 8 – Aug 29 |
| Broccoli | Mar 11 – Mar 25 | Apr 22 – May 6 | — | Jul 11 – Aug 1 |
| Cabbage | Mar 11 – Mar 25 | Apr 15 – Apr 29 | — | Jul 11 – Aug 1 |
| Cauliflower | Mar 11 – Mar 25 | Apr 22 – May 6 | — | Jul 11 – Aug 1 |
| Okra | Mar 25 – Apr 8 | May 27 – Jun 10 | May 27 – Jun 10 | — |
| Basil | Mar 25 – Apr 8 | May 13 – May 27 | — | — |
| Peas | — | — | Mar 25 – Apr 15 | Jul 25 – Aug 15 |
| Spinach | — | — | Mar 25 – Apr 15 | Aug 22 – Sep 12 |
| Radishes | — | — | Apr 1 – May 13 | Sep 5 – Sep 26 |
| Cucumbers | Apr 8 – Apr 15 | May 20 – May 27 | May 13 – May 27 | Aug 1 – Aug 15 |
| Zucchini & Summer Squash | Apr 8 – Apr 15 | — | May 13 – May 27 | Aug 8 – Aug 22 |
| Winter Squash & Pumpkins | Apr 8 – Apr 15 | — | May 13 – May 27 | — |
| Melons & Watermelon | Apr 8 – Apr 15 | May 20 – Jun 3 | — | — |
| Carrots | — | — | Apr 15 – May 13 | Jul 25 – Aug 8 |
| Beets | — | — | Apr 15 – May 13 | Aug 8 – Aug 22 |
| Potatoes | — | — | Apr 15 – May 6 | — |
| Swiss Chard | — | — | Apr 22 – May 20 | Aug 8 – Aug 22 |
| Cilantro | — | — | Apr 22 – May 13 | Aug 22 – Sep 12 |
| Green Beans | — | — | May 13 – Jun 3 | Aug 1 – Aug 15 |
| Sweet Corn | — | — | May 13 – May 27 | — |
| Sweet Potatoes | — | May 20 – Jun 10 | — | — |
| Garlic | — | — | — | Oct 3 – Nov 7 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Forestville-4e, WI weather station, 10 km away (elevation 689 ft (210 m)).
Frost dates near Forestville
- Maplewood May 6 · Oct 17
- Brussels May 6 · Oct 17
- Algoma May 6 · Oct 17
- Casco May 1 · Oct 18
- Sturgeon Bay May 8 · Oct 13
- Luxemburg May 1 · Oct 18
- New Franken May 7 · Oct 9
- Kewaunee May 1 · Oct 18
- Oconto May 9 · Oct 6
- Little Suamico May 9 · Oct 6
Frequently asked questions
When is the last frost in Forestville, WI?
The median last spring frost in Forestville, WI is May 6. There is still about a 10% chance of frost after May 20, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Forestville, WI?
The median first fall frost is October 17, with about a 10% chance of frost before October 1.
How long is the growing season in Forestville, WI?
About 164 days between the median last spring frost and first fall frost.
What planting zone is Forestville, WI?
Forestville, WI is in USDA hardiness zone 5b.