Park Falls, WI frost dates
Last spring frostMay 15median date
First fall frostSep 28median date
Growing season136 daysfrost-free
Hardiness zone4aZone 4a
How Park Falls compares
- In 8 years out of 10, the last spring frost in Park Falls falls between April 30 and May 30, a 30-day window. The first fall frost falls between September 16 and October 11.
- The median last frost is 10 days later than the Wisconsin median of May 5.
- Its 136-day growing season is longer than 12% of the 749 Wisconsin places with a regular frost season (state median 155 days).
- The last frost is typical for zone 4a, where the median is May 12.
- The weather station records an average of 185 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 30 |
| 50% (median) | May 15 |
| 10% (safe for tender plants) | May 30 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 16 |
| 50% (median) | September 28 |
| 90% (late) | October 11 |
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 Park Falls, WI
Park Falls, WI frost dates — last frost May 15, first frost Sep 28, zone 4a. whenisthelastfrost.com
Crop
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Start indoors: Feb 20 to Mar 6Transplant outside: Apr 17 to May 1
Start indoors: Mar 6 to Mar 20Transplant outside: May 29 to Jun 12
Start indoors: Mar 6 to Mar 20Transplant outside: May 29 to Jun 12
Start indoors: Mar 20 to Apr 3Transplant outside: May 22 to Jun 5
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 24 to May 8Sow outdoors: Apr 17 to May 22Plant for fall: Aug 3 to Aug 31
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 17 to May 1Sow outdoors: Apr 17 to May 1Plant for fall: Jul 20 to Aug 10
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 22 to Jul 13
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 24 to May 8Plant for fall: Jun 22 to Jul 13
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 22 to Jul 13
Start indoors: Apr 3 to Apr 17Transplant outside: Jun 5 to Jun 19Sow outdoors: Jun 5 to Jun 19
Start indoors: Apr 3 to Apr 17Transplant outside: May 22 to Jun 5
Sow outdoors: Apr 3 to Apr 24Plant for fall: Jul 6 to Jul 27
Sow outdoors: Apr 3 to Apr 24Plant for fall: Aug 3 to Aug 24
Sow outdoors: Apr 10 to May 22Plant for fall: Aug 17 to Sep 7
Start indoors: Apr 17 to Apr 24Transplant outside: May 29 to Jun 5Sow outdoors: May 22 to Jun 5Plant for fall: Jul 13 to Jul 27
Start indoors: Apr 17 to Apr 24Sow outdoors: May 22 to Jun 5Plant for fall: Jul 20 to Aug 3
Start indoors: Apr 17 to Apr 24Sow outdoors: May 22 to Jun 5
Start indoors: Apr 17 to Apr 24Transplant outside: May 29 to Jun 12
Sow outdoors: Apr 24 to May 22Plant for fall: Jul 6 to Jul 20
Sow outdoors: Apr 24 to May 22Plant for fall: Jul 20 to Aug 3
Sow outdoors: Apr 24 to May 15
Sow outdoors: May 1 to May 29Plant for fall: Jul 20 to Aug 3
Sow outdoors: May 1 to May 22Plant for fall: Aug 3 to Aug 24
Sow outdoors: May 22 to Jun 12Plant for fall: Jul 13 to Jul 27
Sow outdoors: May 22 to Jun 5
Transplant outside: May 29 to Jun 19
Plant for fall: Sep 14 to Oct 19
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Park Falls, WI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 20 – Mar 6 | Apr 17 – May 1 | — | — |
| Peppers | Mar 6 – Mar 20 | May 29 – Jun 12 | — | — |
| Eggplant | Mar 6 – Mar 20 | May 29 – Jun 12 | — | — |
| Tomatoes | Mar 20 – Apr 3 | May 22 – Jun 5 | — | — |
| Lettuce | Mar 20 – Apr 3 | Apr 24 – May 8 | Apr 17 – May 22 | Aug 3 – Aug 31 |
| Kale | Mar 20 – Apr 3 | Apr 17 – May 1 | Apr 17 – May 1 | Jul 20 – Aug 10 |
| Broccoli | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 22 – Jul 13 |
| Cabbage | Mar 20 – Apr 3 | Apr 24 – May 8 | — | Jun 22 – Jul 13 |
| Cauliflower | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 22 – Jul 13 |
| Okra | Apr 3 – Apr 17 | Jun 5 – Jun 19 | Jun 5 – Jun 19 | — |
| Basil | Apr 3 – Apr 17 | May 22 – Jun 5 | — | — |
| Peas | — | — | Apr 3 – Apr 24 | Jul 6 – Jul 27 |
| Spinach | — | — | Apr 3 – Apr 24 | Aug 3 – Aug 24 |
| Radishes | — | — | Apr 10 – May 22 | Aug 17 – Sep 7 |
| Cucumbers | Apr 17 – Apr 24 | May 29 – Jun 5 | May 22 – Jun 5 | Jul 13 – Jul 27 |
| Zucchini & Summer Squash | Apr 17 – Apr 24 | — | May 22 – Jun 5 | Jul 20 – Aug 3 |
| Winter Squash & Pumpkins | Apr 17 – Apr 24 | — | May 22 – Jun 5 | — |
| Melons & Watermelon | Apr 17 – Apr 24 | May 29 – Jun 12 | — | — |
| Carrots | — | — | Apr 24 – May 22 | Jul 6 – Jul 20 |
| Beets | — | — | Apr 24 – May 22 | Jul 20 – Aug 3 |
| Potatoes | — | — | Apr 24 – May 15 | — |
| Swiss Chard | — | — | May 1 – May 29 | Jul 20 – Aug 3 |
| Cilantro | — | — | May 1 – May 22 | Aug 3 – Aug 24 |
| Green Beans | — | — | May 22 – Jun 12 | Jul 13 – Jul 27 |
| Sweet Corn | — | — | May 22 – Jun 5 | — |
| Sweet Potatoes | — | May 29 – Jun 19 | — | — |
| Garlic | — | — | — | Sep 14 – Oct 19 |
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 Park Falls Dnr Hq, WI weather station, 2 km away (elevation 1,526 ft (465 m)).
Frost dates near Park Falls
- Butternut May 22 · Sep 24
- Fifield May 15 · Sep 28
- Glidden May 22 · Sep 24
- Phillips May 23 · Sep 23
- Mercer May 25 · Sep 21
- Lac Du Flambeau May 23 · Sep 27
- Mellen May 26 · Sep 27
- Prentice May 23 · Sep 23
- Clam Lake May 16 · Sep 30
- Kennan May 23 · Sep 23
Frequently asked questions
When is the last frost in Park Falls, WI?
The median last spring frost in Park Falls, WI is May 15. There is still about a 10% chance of frost after May 30, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Park Falls, WI?
The median first fall frost is September 28, with about a 10% chance of frost before September 16.
How long is the growing season in Park Falls, WI?
About 136 days between the median last spring frost and first fall frost.
What planting zone is Park Falls, WI?
Park Falls, WI is in USDA hardiness zone 4a.