Glidden, WI frost dates
Last spring frostMay 22median date
First fall frostSep 24median date
Growing season125 daysfrost-free
Hardiness zone4aZone 4a
How Glidden compares
- In 8 years out of 10, the last spring frost in Glidden falls between May 6 and June 4, a 29-day window. The first fall frost falls between September 10 and October 8.
- The median last frost is 17 days later than the Wisconsin median of May 5.
- Its 125-day growing season is longer than 5% of the 749 Wisconsin places with a regular frost season (state median 155 days).
- The last frost is 10 days later than the zone 4a median of May 12. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 4a chart.
- The weather station records an average of 195 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 6 |
| 50% (median) | May 22 |
| 10% (safe for tender plants) | June 4 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 10 |
| 50% (median) | September 24 |
| 90% (late) | October 8 |
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 Glidden, WI
Glidden, WI frost dates — last frost May 22, first frost Sep 24, zone 4a. whenisthelastfrost.com
Crop
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Start indoors: Feb 27 to Mar 13Transplant outside: Apr 24 to May 8
Start indoors: Mar 13 to Mar 27Transplant outside: Jun 5 to Jun 19
Start indoors: Mar 13 to Mar 27Transplant outside: Jun 5 to Jun 19
Start indoors: Mar 27 to Apr 10Transplant outside: May 29 to Jun 12
Start indoors: Mar 27 to Apr 10Transplant outside: May 1 to May 15Sow outdoors: Apr 24 to May 29Plant for fall: Jul 30 to Aug 27
Start indoors: Mar 27 to Apr 10Transplant outside: Apr 24 to May 8Sow outdoors: Apr 24 to May 8Plant for fall: Jul 16 to Aug 6
Start indoors: Mar 27 to Apr 10Transplant outside: May 8 to May 22Plant for fall: Jun 18 to Jul 9
Start indoors: Mar 27 to Apr 10Transplant outside: May 1 to May 15Plant for fall: Jun 18 to Jul 9
Start indoors: Mar 27 to Apr 10Transplant outside: May 8 to May 22Plant for fall: Jun 18 to Jul 9
Start indoors: Apr 10 to Apr 24Transplant outside: Jun 12 to Jun 26Sow outdoors: Jun 12 to Jun 26
Start indoors: Apr 10 to Apr 24Transplant outside: May 29 to Jun 12
Sow outdoors: Apr 10 to May 1Plant for fall: Jul 2 to Jul 23
Sow outdoors: Apr 10 to May 1Plant for fall: Jul 30 to Aug 20
Sow outdoors: Apr 17 to May 29Plant for fall: Aug 13 to Sep 3
Start indoors: Apr 24 to May 1Transplant outside: Jun 5 to Jun 12Sow outdoors: May 29 to Jun 12Plant for fall: Jul 9 to Jul 23
Start indoors: Apr 24 to May 1Sow outdoors: May 29 to Jun 12Plant for fall: Jul 16 to Jul 30
Start indoors: Apr 24 to May 1Sow outdoors: May 29 to Jun 12
Start indoors: Apr 24 to May 1Transplant outside: Jun 5 to Jun 19
Sow outdoors: May 1 to May 29Plant for fall: Jul 2 to Jul 16
Sow outdoors: May 1 to May 29Plant for fall: Jul 16 to Jul 30
Sow outdoors: May 1 to May 22
Sow outdoors: May 8 to Jun 5Plant for fall: Jul 16 to Jul 30
Sow outdoors: May 8 to May 29Plant for fall: Jul 30 to Aug 20
Sow outdoors: May 29 to Jun 19Plant for fall: Jul 9 to Jul 23
Sow outdoors: May 29 to Jun 12
Transplant outside: Jun 5 to Jun 26
Plant for fall: Sep 10 to Oct 15
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Glidden, WI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 27 – Mar 13 | Apr 24 – May 8 | — | — |
| Peppers | Mar 13 – Mar 27 | Jun 5 – Jun 19 | — | — |
| Eggplant | Mar 13 – Mar 27 | Jun 5 – Jun 19 | — | — |
| Tomatoes | Mar 27 – Apr 10 | May 29 – Jun 12 | — | — |
| Lettuce | Mar 27 – Apr 10 | May 1 – May 15 | Apr 24 – May 29 | Jul 30 – Aug 27 |
| Kale | Mar 27 – Apr 10 | Apr 24 – May 8 | Apr 24 – May 8 | Jul 16 – Aug 6 |
| Broccoli | Mar 27 – Apr 10 | May 8 – May 22 | — | Jun 18 – Jul 9 |
| Cabbage | Mar 27 – Apr 10 | May 1 – May 15 | — | Jun 18 – Jul 9 |
| Cauliflower | Mar 27 – Apr 10 | May 8 – May 22 | — | Jun 18 – Jul 9 |
| Okra | Apr 10 – Apr 24 | Jun 12 – Jun 26 | Jun 12 – Jun 26 | — |
| Basil | Apr 10 – Apr 24 | May 29 – Jun 12 | — | — |
| Peas | — | — | Apr 10 – May 1 | Jul 2 – Jul 23 |
| Spinach | — | — | Apr 10 – May 1 | Jul 30 – Aug 20 |
| Radishes | — | — | Apr 17 – May 29 | Aug 13 – Sep 3 |
| Cucumbers | Apr 24 – May 1 | Jun 5 – Jun 12 | May 29 – Jun 12 | Jul 9 – Jul 23 |
| Zucchini & Summer Squash | Apr 24 – May 1 | — | May 29 – Jun 12 | Jul 16 – Jul 30 |
| Winter Squash & Pumpkins | Apr 24 – May 1 | — | May 29 – Jun 12 | — |
| Melons & Watermelon | Apr 24 – May 1 | Jun 5 – Jun 19 | — | — |
| Carrots | — | — | May 1 – May 29 | Jul 2 – Jul 16 |
| Beets | — | — | May 1 – May 29 | Jul 16 – Jul 30 |
| Potatoes | — | — | May 1 – May 22 | — |
| Swiss Chard | — | — | May 8 – Jun 5 | Jul 16 – Jul 30 |
| Cilantro | — | — | May 8 – May 29 | Jul 30 – Aug 20 |
| Green Beans | — | — | May 29 – Jun 19 | Jul 9 – Jul 23 |
| Sweet Corn | — | — | May 29 – Jun 12 | — |
| Sweet Potatoes | — | Jun 5 – Jun 26 | — | — |
| Garlic | — | — | — | Sep 10 – Oct 15 |
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 Butternut 3sw, WI weather station, 17 km away (elevation 1,572 ft (479 m)).
Frost dates near Glidden
- Butternut May 22 · Sep 24
- Mellen May 26 · Sep 27
- Clam Lake May 16 · Sep 30
- Park Falls May 15 · Sep 28
- High Bridge May 26 · Sep 27
- Upson May 23 · Oct 1
- Iron Belt May 24 · Sep 28
- Marengo May 26 · Sep 27
- Fifield May 15 · Sep 28
- Mercer May 25 · Sep 21
Frequently asked questions
When is the last frost in Glidden, WI?
The median last spring frost in Glidden, WI is May 22. There is still about a 10% chance of frost after June 4, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Glidden, WI?
The median first fall frost is September 24, with about a 10% chance of frost before September 10.
How long is the growing season in Glidden, WI?
About 125 days between the median last spring frost and first fall frost.
What planting zone is Glidden, WI?
Glidden, WI is in USDA hardiness zone 4a.