Wolverine, MI frost dates
Last spring frostJun 7median date
First fall frostSep 14median date
Growing season99 daysfrost-free
Hardiness zone4bZone 4b
How Wolverine compares
- In 8 years out of 10, the last spring frost in Wolverine falls between May 23 and June 29, a 37-day window. The first fall frost falls between August 24 and September 30.
- The median last frost is 33 days later than the Michigan median of May 5.
- Its 99-day growing season is among the shortest of the 878 Michigan places with a regular frost season.
- The last frost is 30 days later than the zone 4b median of May 8. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 4b chart.
- The weather station records an average of 200 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 23 |
| 50% (median) | June 7 |
| 10% (safe for tender plants) | June 29 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 24 |
| 50% (median) | September 14 |
| 90% (late) | September 30 |
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 Wolverine, MI
Wolverine, MI frost dates — last frost Jun 7, first frost Sep 14, zone 4b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 15 to Mar 29Transplant outside: May 10 to May 24
Start indoors: Mar 29 to Apr 12Transplant outside: Jun 21 to Jul 5
Start indoors: Mar 29 to Apr 12Transplant outside: Jun 21 to Jul 5
Start indoors: Apr 12 to Apr 26Transplant outside: Jun 14 to Jun 28
Start indoors: Apr 12 to Apr 26Transplant outside: May 17 to May 31Sow outdoors: May 10 to Jun 14Plant for fall: Jul 20 to Aug 17
Start indoors: Apr 12 to Apr 26Transplant outside: May 10 to May 24Sow outdoors: May 10 to May 24Plant for fall: Jul 6 to Jul 27
Start indoors: Apr 12 to Apr 26Transplant outside: May 24 to Jun 7
Start indoors: Apr 12 to Apr 26Transplant outside: May 17 to May 31
Start indoors: Apr 12 to Apr 26Transplant outside: May 24 to Jun 7
Start indoors: Apr 26 to May 10Transplant outside: Jun 28 to Jul 12Sow outdoors: Jun 28 to Jul 12
Start indoors: Apr 26 to May 10Transplant outside: Jun 14 to Jun 28
Sow outdoors: Apr 26 to May 17Plant for fall: Jun 22 to Jul 13
Sow outdoors: Apr 26 to May 17Plant for fall: Jul 20 to Aug 10
Sow outdoors: May 3 to Jun 14Plant for fall: Aug 3 to Aug 24
Start indoors: May 10 to May 17Transplant outside: Jun 21 to Jun 28Sow outdoors: Jun 14 to Jun 28
Start indoors: May 10 to May 17Sow outdoors: Jun 14 to Jun 28
Start indoors: May 10 to May 17Sow outdoors: Jun 14 to Jun 28
Start indoors: May 10 to May 17Transplant outside: Jun 21 to Jul 5
Sow outdoors: May 17 to Jun 14
Sow outdoors: May 17 to Jun 14Plant for fall: Jul 6 to Jul 20
Sow outdoors: May 17 to Jun 7
Sow outdoors: May 24 to Jun 21Plant for fall: Jul 6 to Jul 20
Sow outdoors: May 24 to Jun 14Plant for fall: Jul 20 to Aug 10
Sow outdoors: Jun 14 to Jul 5
Sow outdoors: Jun 14 to Jun 28
Transplant outside: Jun 21 to Jul 12
Plant for fall: Aug 31 to Oct 5
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Wolverine, MI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 15 – Mar 29 | May 10 – May 24 | — | — |
| Peppers | Mar 29 – Apr 12 | Jun 21 – Jul 5 | — | — |
| Eggplant | Mar 29 – Apr 12 | Jun 21 – Jul 5 | — | — |
| Tomatoes | Apr 12 – Apr 26 | Jun 14 – Jun 28 | — | — |
| Lettuce | Apr 12 – Apr 26 | May 17 – May 31 | May 10 – Jun 14 | Jul 20 – Aug 17 |
| Kale | Apr 12 – Apr 26 | May 10 – May 24 | May 10 – May 24 | Jul 6 – Jul 27 |
| Broccoli | Apr 12 – Apr 26 | May 24 – Jun 7 | — | — |
| Cabbage | Apr 12 – Apr 26 | May 17 – May 31 | — | — |
| Cauliflower | Apr 12 – Apr 26 | May 24 – Jun 7 | — | — |
| Okra | Apr 26 – May 10 | Jun 28 – Jul 12 | Jun 28 – Jul 12 | — |
| Basil | Apr 26 – May 10 | Jun 14 – Jun 28 | — | — |
| Peas | — | — | Apr 26 – May 17 | Jun 22 – Jul 13 |
| Spinach | — | — | Apr 26 – May 17 | Jul 20 – Aug 10 |
| Radishes | — | — | May 3 – Jun 14 | Aug 3 – Aug 24 |
| Cucumbers | May 10 – May 17 | Jun 21 – Jun 28 | Jun 14 – Jun 28 | — |
| Zucchini & Summer Squash | May 10 – May 17 | — | Jun 14 – Jun 28 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 99 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 10 – May 17 | — | Jun 14 – Jun 28 | — |
| Melons & Watermelon | May 10 – May 17 | Jun 21 – Jul 5 | — | — |
| Carrots | — | — | May 17 – Jun 14 | — |
| Beets | — | — | May 17 – Jun 14 | Jul 6 – Jul 20 |
| Potatoes | — | — | May 17 – Jun 7 | — |
| Swiss Chard | — | — | May 24 – Jun 21 | Jul 6 – Jul 20 |
| Cilantro | — | — | May 24 – Jun 14 | Jul 20 – Aug 10 |
| Green Beans | — | — | Jun 14 – Jul 5 | — |
| Sweet Corn | — | — | Jun 14 – Jun 28 | — |
| Sweet Potatoes Warning: Your frost-free season is about 99 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 21 – Jul 12 | — | — |
| Garlic | — | — | — | Aug 31 – Oct 5 |
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 Vanderbilt 11ene, MI weather station, 18 km away (elevation 906 ft (276 m)).
Frost dates near Wolverine
- Afton May 22 · Oct 2
- Vanderbilt May 25 · Sep 26
- Indian River May 31 · Sep 18
- Burt Lake May 31 · Sep 18
- Topinabee May 21 · Sep 27
- Alanson May 31 · Sep 18
- Oden May 16 · Oct 9
- Boyne Falls May 23 · Oct 3
- Conway May 16 · Oct 9
- Petoskey May 16 · Oct 9
Frequently asked questions
When is the last frost in Wolverine, MI?
The median last spring frost in Wolverine, MI is June 7. There is still about a 10% chance of frost after June 29, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Wolverine, MI?
The median first fall frost is September 14, with about a 10% chance of frost before August 24.
How long is the growing season in Wolverine, MI?
About 99 days between the median last spring frost and first fall frost.
What planting zone is Wolverine, MI?
Wolverine, MI is in USDA hardiness zone 4b.