Frost dates for 49726Drummond Island, MI
The average last spring frost in Drummond Island is May 5 and the average first fall frost is October 20, giving a typical growing season of about 167 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 5
- Average first fall frost
- Oct 20
- Growing season
- 167 days
Safer after May 20 (1-in-10 risk)
Possible by Oct 6 (1-in-10 risk)
Last frost typically in 184 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | May 3 · May 19 · Jun 1 | Sep 26 · Oct 7 · Oct 20 | 141 days | 100% |
| Frost / freeze (32°F) | Apr 24 · May 5 · May 20 | Oct 6 · Oct 20 · Nov 3 | 167 days | 100% |
| Hard freeze (28°F) | Apr 11 · Apr 25 · May 7 | Oct 17 · Nov 1 · Nov 14 | 189 days | 100% |
Planting calendar for Drummond Island
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Apr 4 – Jun 10 |
| Tomatoes | Transplant outdoors | May 21 – Jun 30 |
| Peppers | Start seeds indoors | Apr 4 – May 5 |
| Peppers | Transplant outdoors | Jun 4 – Jul 5 |
| Eggplant | Start seeds indoors | Apr 21 – May 20 |
| Eggplant | Transplant outdoors | Jun 4 – Jul 5 |
| Cucumbers | Sow outdoors | Jun 4 – Jul 10 |
| Summer squash | Sow outdoors | May 21 – Jul 5 |
| Winter squash & pumpkins | Sow outdoors | Jun 4 – Jul 5 |
| Snap beans | Sow outdoors | May 21 – Aug 2 |
| Sweet corn | Sow outdoors | May 21 – Jun 30 |
| Watermelon & cantaloupe | Sow outdoors | Jun 4 – Jul 5 |
| Okra | Sow outdoors | May 28 – Jun 20 |
| Peas | Sow outdoors (spring) | Apr 4 – May 20 |
| Potatoes | Plant outdoors (spring) | Apr 4 – Jun 4 |
| Onions | Start seeds indoors (spring) | Feb 21 – Mar 20 |
| Onions | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (spring) | Mar 17 – Apr 20 |
| Broccoli | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (fall) | Jun 20 – Jun 30 |
| Broccoli | Transplant outdoors (fall) | Jul 20 – Jul 31 |
| Cabbage | Start seeds indoors (spring) | Mar 7 – Apr 4 |
| Cabbage | Transplant outdoors (spring) | Apr 4 – May 5 |
| Cabbage | Start seeds indoors (fall) | Jun 10 – Jul 10 |
| Cabbage | Transplant outdoors (fall) | Jul 10 – Aug 10 |
| Leaf lettuce | Sow outdoors (spring) | Apr 4 – Jun 20 |
| Leaf lettuce | Sow outdoors (fall) | Jul 10 – Aug 26 |
| Spinach | Sow outdoors (spring) | Mar 28 – May 11 |
| Spinach | Sow outdoors (fall) | Jul 27 – Aug 31 |
| Radishes | Sow outdoors (spring) | Apr 4 – May 25 |
| Radishes | Sow outdoors (fall) | Jul 10 – Sep 10 |
| Kale | Sow outdoors (spring) | Apr 21 – May 11 |
| Kale | Sow outdoors (fall) | Jul 3 – Aug 10 |
| Carrots | Sow outdoors (spring) | May 5 – Jun 20 |
| Carrots | Sow outdoors (fall) | Jun 10 – Jul 26 |
| Garlic | Plant outdoors (fall) | Oct 10 – Nov 10 |
Where these dates come from
ZIP code 49726 is matched to the NOAA station Detour Village, MI, 12.7 km away, at 595 ft elevation (64 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Detour Village, MI (used) | 595 ft | May 5 | Oct 20 |
| Pickford 3Ne, MI | 629 ft | May 31 | Sep 25 |
| Rudyard 5Se, MI | 667 ft | Jun 1 | Sep 21 |
| Rogers City, MI | 615 ft | May 10 | Oct 14 |
Frost dates near Drummond Island
- De Tour Village, MI 49725 · last May 5, first Oct 20
- Goetzville, MI 49736 · last May 31, first Sep 25
- Cedarville, MI 49719 · last May 31, first Sep 25
- Barbeau, MI 49710 · last May 31, first Sep 25
- Pickford, MI 49774 · last May 31, first Sep 25
- Hessel, MI 49745 · last May 31, first Sep 25
- Kincheloe, MI 49785 · last May 31, first Sep 25
- Dafter, MI 49724 · last May 9, first Oct 11
Frequently asked questions
- When is the last frost in Drummond Island, MI?
- For ZIP code 49726, the average last spring frost (32°F) is May 5, based on NOAA 1991-2020 climate normals for the Detour Village, MI weather station. There is a 1-in-10 chance of a frost after May 20.
- When is the first frost in Drummond Island, MI?
- The average first fall frost (32°F) is October 20. There is a 1-in-10 chance of frost by October 6, so tender plants are at risk from that point on.
- How long is the growing season in 49726?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 167 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.