Frost dates for 49753Lachine, MI
The average last spring frost in Lachine is May 17 and the average first fall frost is October 1, giving a typical growing season of about 136 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 17
- Average first fall frost
- Oct 1
- Growing season
- 136 days
Safer after May 31 (1-in-10 risk)
Possible by Sep 18 (1-in-10 risk)
Last frost typically in 203 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 15 · May 29 · Jun 12 | Sep 4 · Sep 21 · Oct 3 | 112 days | 100% |
| Frost / freeze (32°F) | May 1 · May 17 · May 31 | Sep 18 · Oct 1 · Oct 16 | 136 days | 100% |
| Hard freeze (28°F) | Apr 20 · May 4 · May 19 | Sep 29 · Oct 15 · Oct 31 | 162 days | 100% |
Planting calendar for Lachine
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 16 – Jun 22 |
| Tomatoes | Transplant outdoors | Jun 2 – Jun 11 |
| Peppers | Start seeds indoors | Apr 16 – May 17 |
| Peppers | Transplant outdoors | Jun 16 – Jul 17 |
| Eggplant | Start seeds indoors | May 3 – Jun 1 |
| Eggplant | Transplant outdoors | Jun 16 – Jul 17 |
| Cucumbers | Sow outdoors | Jun 16 – Jun 21 |
| Summer squash | Sow outdoors | Jun 2 – Jul 17 |
| Winter squash & pumpkins | Sow outdoors | Jun 16 – Jul 17 |
| Snap beans | Sow outdoors | Jun 2 – Jul 14 |
| Sweet corn | Sow outdoors | Jun 2 – Jun 11 |
| Watermelon & cantaloupe | Sow outdoors | Jun 16 – Jul 17 |
| Okra | Sow outdoors | Jun 9 – Jul 2 |
| Peas | Sow outdoors (spring) | Apr 16 – Jun 1 |
| Potatoes | Plant outdoors (spring) | Apr 16 – Jun 16 |
| Onions | Start seeds indoors (spring) | Mar 5 – Apr 1 |
| Onions | Transplant outdoors (spring) | May 3 – Jun 1 |
| Broccoli | Start seeds indoors (spring) | Mar 29 – May 2 |
| Broccoli | Transplant outdoors (spring) | May 3 – Jun 1 |
| Broccoli | Start seeds indoors (fall) | Jun 1 – Jun 11 |
| Broccoli | Transplant outdoors (fall) | Jul 1 – Jul 12 |
| Cabbage | Start seeds indoors (spring) | Mar 19 – Apr 16 |
| Cabbage | Transplant outdoors (spring) | Apr 16 – May 17 |
| Cabbage | Start seeds indoors (fall) | May 22 – Jun 21 |
| Cabbage | Transplant outdoors (fall) | Jun 21 – Jul 22 |
| Leaf lettuce | Sow outdoors (spring) | Apr 16 – Jul 2 |
| Leaf lettuce | Sow outdoors (fall) | Jun 21 – Aug 7 |
| Spinach | Sow outdoors (spring) | Apr 9 – May 23 |
| Spinach | Sow outdoors (fall) | Jul 8 – Aug 12 |
| Radishes | Sow outdoors (spring) | Apr 16 – Jun 6 |
| Radishes | Sow outdoors (fall) | Jun 21 – Aug 22 |
| Kale | Sow outdoors (spring) | May 3 – May 23 |
| Kale | Sow outdoors (fall) | Jun 14 – Jul 22 |
| Carrots | Sow outdoors (spring) | May 17 – Jul 2 |
| Carrots | Sow outdoors (fall) | May 22 – Jul 7 |
| Garlic | Plant outdoors (fall) | Sep 21 – Oct 22 |
Where these dates come from
ZIP code 49753 is matched to the NOAA station Alpena Co Rgnl Ap, MI, 14.9 km away, at 684 ft elevation (94 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Alpena Co Rgnl Ap, MI (used) | 684 ft | May 17 | Oct 1 |
| Alpena 10Nw, MI | 740 ft | May 13 | Oct 3 |
| Alpena Wwtp, MI | 590 ft | May 5 | Oct 17 |
| Atlanta, MI | 879 ft | May 22 | Sep 27 |
Frost dates near Lachine
- Herron, MI 49744 · last May 17, first Oct 1
- Hillman, MI 49746 · last May 22, first Sep 27
- Hubbard Lake, MI 49747 · last May 17, first Oct 1
- Posen, MI 49776 · last May 17, first Oct 1
- Alpena, MI 49707 · last May 5, first Oct 17
- Ossineke, MI 49766 · last May 17, first Oct 1
- Hawks, MI 49743 · last May 10, first Oct 14
- Spruce, MI 48762 · last May 8, first Oct 16
Frequently asked questions
- When is the last frost in Lachine, MI?
- For ZIP code 49753, the average last spring frost (32°F) is May 17, based on NOAA 1991-2020 climate normals for the Alpena Co Rgnl Ap, MI weather station. There is a 1-in-10 chance of a frost after May 31.
- When is the first frost in Lachine, MI?
- The average first fall frost (32°F) is October 1. There is a 1-in-10 chance of frost by September 18, so tender plants are at risk from that point on.
- How long is the growing season in 49753?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 136 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.