Boyne City, MI frost dates
Last spring frostMay 23median date
First fall frostOct 3median date
Growing season133 daysfrost-free
Hardiness zone5bZone 5b
How Boyne City compares
- In 8 years out of 10, the last spring frost in Boyne City falls between May 4 and June 6, a 33-day window. The first fall frost falls between September 16 and October 19.
- The median last frost is 18 days later than the Michigan median of May 5.
- Its 133-day growing season is longer than 14% of the 878 Michigan places with a regular frost season (state median 162 days).
- The last frost is 22 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 160 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 4 |
| 50% (median) | May 23 |
| 10% (safe for tender plants) | June 6 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 16 |
| 50% (median) | October 3 |
| 90% (late) | October 19 |
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 Boyne City, MI
Boyne City, MI frost dates — last frost May 23, first frost Oct 3, zone 5b. whenisthelastfrost.com
Crop
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Start indoors: Feb 28 to Mar 14Transplant outside: Apr 25 to May 9
Start indoors: Mar 14 to Mar 28Transplant outside: Jun 6 to Jun 20
Start indoors: Mar 14 to Mar 28Transplant outside: Jun 6 to Jun 20
Start indoors: Mar 28 to Apr 11Transplant outside: May 30 to Jun 13
Start indoors: Mar 28 to Apr 11Transplant outside: May 2 to May 16Sow outdoors: Apr 25 to May 30Plant for fall: Aug 8 to Sep 5
Start indoors: Mar 28 to Apr 11Transplant outside: Apr 25 to May 9Sow outdoors: Apr 25 to May 9Plant for fall: Jul 25 to Aug 15
Start indoors: Mar 28 to Apr 11Transplant outside: May 9 to May 23Plant for fall: Jun 27 to Jul 18
Start indoors: Mar 28 to Apr 11Transplant outside: May 2 to May 16Plant for fall: Jun 27 to Jul 18
Start indoors: Mar 28 to Apr 11Transplant outside: May 9 to May 23Plant for fall: Jun 27 to Jul 18
Start indoors: Apr 11 to Apr 25Transplant outside: Jun 13 to Jun 27Sow outdoors: Jun 13 to Jun 27
Start indoors: Apr 11 to Apr 25Transplant outside: May 30 to Jun 13
Sow outdoors: Apr 11 to May 2Plant for fall: Jul 11 to Aug 1
Sow outdoors: Apr 11 to May 2Plant for fall: Aug 8 to Aug 29
Sow outdoors: Apr 18 to May 30Plant for fall: Aug 22 to Sep 12
Start indoors: Apr 25 to May 2Transplant outside: Jun 6 to Jun 13Sow outdoors: May 30 to Jun 13Plant for fall: Jul 18 to Aug 1
Start indoors: Apr 25 to May 2Sow outdoors: May 30 to Jun 13Plant for fall: Jul 25 to Aug 8
Start indoors: Apr 25 to May 2Sow outdoors: May 30 to Jun 13
Start indoors: Apr 25 to May 2Transplant outside: Jun 6 to Jun 20
Sow outdoors: May 2 to May 30Plant for fall: Jul 11 to Jul 25
Sow outdoors: May 2 to May 30Plant for fall: Jul 25 to Aug 8
Sow outdoors: May 2 to May 23
Sow outdoors: May 9 to Jun 6Plant for fall: Jul 25 to Aug 8
Sow outdoors: May 9 to May 30Plant for fall: Aug 8 to Aug 29
Sow outdoors: May 30 to Jun 20Plant for fall: Jul 18 to Aug 1
Sow outdoors: May 30 to Jun 13
Transplant outside: Jun 6 to Jun 27
Plant for fall: Sep 19 to Oct 24
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Boyne City, MI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 28 – Mar 14 | Apr 25 – May 9 | — | — |
| Peppers | Mar 14 – Mar 28 | Jun 6 – Jun 20 | — | — |
| Eggplant | Mar 14 – Mar 28 | Jun 6 – Jun 20 | — | — |
| Tomatoes | Mar 28 – Apr 11 | May 30 – Jun 13 | — | — |
| Lettuce | Mar 28 – Apr 11 | May 2 – May 16 | Apr 25 – May 30 | Aug 8 – Sep 5 |
| Kale | Mar 28 – Apr 11 | Apr 25 – May 9 | Apr 25 – May 9 | Jul 25 – Aug 15 |
| Broccoli | Mar 28 – Apr 11 | May 9 – May 23 | — | Jun 27 – Jul 18 |
| Cabbage | Mar 28 – Apr 11 | May 2 – May 16 | — | Jun 27 – Jul 18 |
| Cauliflower | Mar 28 – Apr 11 | May 9 – May 23 | — | Jun 27 – Jul 18 |
| Okra | Apr 11 – Apr 25 | Jun 13 – Jun 27 | Jun 13 – Jun 27 | — |
| Basil | Apr 11 – Apr 25 | May 30 – Jun 13 | — | — |
| Peas | — | — | Apr 11 – May 2 | Jul 11 – Aug 1 |
| Spinach | — | — | Apr 11 – May 2 | Aug 8 – Aug 29 |
| Radishes | — | — | Apr 18 – May 30 | Aug 22 – Sep 12 |
| Cucumbers | Apr 25 – May 2 | Jun 6 – Jun 13 | May 30 – Jun 13 | Jul 18 – Aug 1 |
| Zucchini & Summer Squash | Apr 25 – May 2 | — | May 30 – Jun 13 | Jul 25 – Aug 8 |
| Winter Squash & Pumpkins | Apr 25 – May 2 | — | May 30 – Jun 13 | — |
| Melons & Watermelon | Apr 25 – May 2 | Jun 6 – Jun 20 | — | — |
| Carrots | — | — | May 2 – May 30 | Jul 11 – Jul 25 |
| Beets | — | — | May 2 – May 30 | Jul 25 – Aug 8 |
| Potatoes | — | — | May 2 – May 23 | — |
| Swiss Chard | — | — | May 9 – Jun 6 | Jul 25 – Aug 8 |
| Cilantro | — | — | May 9 – May 30 | Aug 8 – Aug 29 |
| Green Beans | — | — | May 30 – Jun 20 | Jul 18 – Aug 1 |
| Sweet Corn | — | — | May 30 – Jun 13 | — |
| Sweet Potatoes | — | Jun 6 – Jun 27 | — | — |
| Garlic | — | — | — | Sep 19 – Oct 24 |
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 Boyne Falls, MI weather station, 9 km away (elevation 728 ft (222 m)).
Frost dates near Boyne City
- Walloon Lake May 16 · Oct 9
- Boyne Falls May 23 · Oct 3
- East Jordan May 23 · Oct 2
- Charlevoix May 1 · Oct 28
- Bay Shore May 6 · Oct 20
- Petoskey May 16 · Oct 9
- Ellsworth May 16 · Oct 6
- Elmira May 25 · Sep 26
- Central Lake May 23 · Oct 2
- Alba May 15 · Oct 7
Frequently asked questions
When is the last frost in Boyne City, MI?
The median last spring frost in Boyne City, MI is May 23. There is still about a 10% chance of frost after June 6, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Boyne City, MI?
The median first fall frost is October 3, with about a 10% chance of frost before September 16.
How long is the growing season in Boyne City, MI?
About 133 days between the median last spring frost and first fall frost.
What planting zone is Boyne City, MI?
Boyne City, MI is in USDA hardiness zone 5b.