Conway, MI frost dates
Last spring frostMay 16median date
First fall frostOct 9median date
Growing season146 daysfrost-free
Hardiness zone5bZone 5b
How Conway compares
- In 8 years out of 10, the last spring frost in Conway falls between April 30 and May 31, a 31-day window. The first fall frost falls between September 27 and October 23.
- The median last frost is 11 days later than the Michigan median of May 5.
- Its 146-day growing season is longer than 30% of the 878 Michigan places with a regular frost season (state median 162 days).
- The last frost is 15 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 166 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 30 |
| 50% (median) | May 16 |
| 10% (safe for tender plants) | May 31 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 27 |
| 50% (median) | October 9 |
| 90% (late) | October 23 |
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 Conway, MI
Conway, MI frost dates — last frost May 16, first frost Oct 9, zone 5b. whenisthelastfrost.com
Crop
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Start indoors: Feb 21 to Mar 7Transplant outside: Apr 18 to May 2
Start indoors: Mar 7 to Mar 21Transplant outside: May 30 to Jun 13
Start indoors: Mar 7 to Mar 21Transplant outside: May 30 to Jun 13
Start indoors: Mar 21 to Apr 4Transplant outside: May 23 to Jun 6
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 25 to May 9Sow outdoors: Apr 18 to May 23Plant for fall: Aug 14 to Sep 11
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 18 to May 2Sow outdoors: Apr 18 to May 2Plant for fall: Jul 31 to Aug 21
Start indoors: Mar 21 to Apr 4Transplant outside: May 2 to May 16Plant for fall: Jul 3 to Jul 24
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 25 to May 9Plant for fall: Jul 3 to Jul 24
Start indoors: Mar 21 to Apr 4Transplant outside: May 2 to May 16Plant for fall: Jul 3 to Jul 24
Start indoors: Apr 4 to Apr 18Transplant outside: Jun 6 to Jun 20Sow outdoors: Jun 6 to Jun 20
Start indoors: Apr 4 to Apr 18Transplant outside: May 23 to Jun 6
Sow outdoors: Apr 4 to Apr 25Plant for fall: Jul 17 to Aug 7
Sow outdoors: Apr 4 to Apr 25Plant for fall: Aug 14 to Sep 4
Sow outdoors: Apr 11 to May 23Plant for fall: Aug 28 to Sep 18
Start indoors: Apr 18 to Apr 25Transplant outside: May 30 to Jun 6Sow outdoors: May 23 to Jun 6Plant for fall: Jul 24 to Aug 7
Start indoors: Apr 18 to Apr 25Sow outdoors: May 23 to Jun 6Plant for fall: Jul 31 to Aug 14
Start indoors: Apr 18 to Apr 25Sow outdoors: May 23 to Jun 6
Start indoors: Apr 18 to Apr 25Transplant outside: May 30 to Jun 13
Sow outdoors: Apr 25 to May 23Plant for fall: Jul 17 to Jul 31
Sow outdoors: Apr 25 to May 23Plant for fall: Jul 31 to Aug 14
Sow outdoors: Apr 25 to May 16
Sow outdoors: May 2 to May 30Plant for fall: Jul 31 to Aug 14
Sow outdoors: May 2 to May 23Plant for fall: Aug 14 to Sep 4
Sow outdoors: May 23 to Jun 13Plant for fall: Jul 24 to Aug 7
Sow outdoors: May 23 to Jun 6
Transplant outside: May 30 to Jun 20
Plant for fall: Sep 25 to Oct 30
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Conway, MI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 21 – Mar 7 | Apr 18 – May 2 | — | — |
| Peppers | Mar 7 – Mar 21 | May 30 – Jun 13 | — | — |
| Eggplant | Mar 7 – Mar 21 | May 30 – Jun 13 | — | — |
| Tomatoes | Mar 21 – Apr 4 | May 23 – Jun 6 | — | — |
| Lettuce | Mar 21 – Apr 4 | Apr 25 – May 9 | Apr 18 – May 23 | Aug 14 – Sep 11 |
| Kale | Mar 21 – Apr 4 | Apr 18 – May 2 | Apr 18 – May 2 | Jul 31 – Aug 21 |
| Broccoli | Mar 21 – Apr 4 | May 2 – May 16 | — | Jul 3 – Jul 24 |
| Cabbage | Mar 21 – Apr 4 | Apr 25 – May 9 | — | Jul 3 – Jul 24 |
| Cauliflower | Mar 21 – Apr 4 | May 2 – May 16 | — | Jul 3 – Jul 24 |
| Okra | Apr 4 – Apr 18 | Jun 6 – Jun 20 | Jun 6 – Jun 20 | — |
| Basil | Apr 4 – Apr 18 | May 23 – Jun 6 | — | — |
| Peas | — | — | Apr 4 – Apr 25 | Jul 17 – Aug 7 |
| Spinach | — | — | Apr 4 – Apr 25 | Aug 14 – Sep 4 |
| Radishes | — | — | Apr 11 – May 23 | Aug 28 – Sep 18 |
| Cucumbers | Apr 18 – Apr 25 | May 30 – Jun 6 | May 23 – Jun 6 | Jul 24 – Aug 7 |
| Zucchini & Summer Squash | Apr 18 – Apr 25 | — | May 23 – Jun 6 | Jul 31 – Aug 14 |
| Winter Squash & Pumpkins | Apr 18 – Apr 25 | — | May 23 – Jun 6 | — |
| Melons & Watermelon | Apr 18 – Apr 25 | May 30 – Jun 13 | — | — |
| Carrots | — | — | Apr 25 – May 23 | Jul 17 – Jul 31 |
| Beets | — | — | Apr 25 – May 23 | Jul 31 – Aug 14 |
| Potatoes | — | — | Apr 25 – May 16 | — |
| Swiss Chard | — | — | May 2 – May 30 | Jul 31 – Aug 14 |
| Cilantro | — | — | May 2 – May 23 | Aug 14 – Sep 4 |
| Green Beans | — | — | May 23 – Jun 13 | Jul 24 – Aug 7 |
| Sweet Corn | — | — | May 23 – Jun 6 | — |
| Sweet Potatoes | — | May 30 – Jun 20 | — | — |
| Garlic | — | — | — | Sep 25 – Oct 30 |
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 Petoskey Ncmc, MI weather station, 9 km away (elevation 748 ft (228 m)).
Frost dates near Conway
- Oden May 16 · Oct 9
- Alanson May 31 · Sep 18
- Petoskey May 16 · Oct 9
- Burt Lake May 31 · Sep 18
- Brutus May 31 · Sep 18
- Harbor Springs May 15 · Oct 16
- Pellston May 31 · Sep 18
- Walloon Lake May 16 · Oct 9
- Bay Shore May 6 · Oct 20
- Indian River May 31 · Sep 18
Frequently asked questions
When is the last frost in Conway, MI?
The median last spring frost in Conway, MI is May 16. There is still about a 10% chance of frost after May 31, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Conway, MI?
The median first fall frost is October 9, with about a 10% chance of frost before September 27.
How long is the growing season in Conway, MI?
About 146 days between the median last spring frost and first fall frost.
What planting zone is Conway, MI?
Conway, MI is in USDA hardiness zone 5b.