Frost dates for 49854Manistique, MI
The average last spring frost in Manistique is May 9 and the average first fall frost is October 10, giving a typical growing season of about 154 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 9
- Average first fall frost
- Oct 10
- Growing season
- 154 days
Safer after May 23 (1-in-10 risk)
Possible by Sep 27 (1-in-10 risk)
Last frost typically in 189 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 8 · May 22 · Jun 4 | Sep 15 · Oct 1 · Oct 12 | 130 days | 100% |
| Frost / freeze (32°F) | Apr 27 · May 9 · May 23 | Sep 27 · Oct 10 · Oct 27 | 154 days | 100% |
| Hard freeze (28°F) | Apr 11 · Apr 27 · May 10 | Oct 9 · Oct 26 · Nov 11 | 181 days | 100% |
Planting calendar for Manistique
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 8 – Jun 14 |
| Tomatoes | Transplant outdoors | May 25 – Jun 20 |
| Peppers | Start seeds indoors | Apr 8 – May 9 |
| Peppers | Transplant outdoors | Jun 8 – Jul 9 |
| Eggplant | Start seeds indoors | Apr 25 – May 24 |
| Eggplant | Transplant outdoors | Jun 8 – Jul 9 |
| Cucumbers | Sow outdoors | Jun 8 – Jun 30 |
| Summer squash | Sow outdoors | May 25 – Jul 9 |
| Winter squash & pumpkins | Sow outdoors | Jun 8 – Jul 9 |
| Snap beans | Sow outdoors | May 25 – Jul 23 |
| Sweet corn | Sow outdoors | May 25 – Jun 20 |
| Watermelon & cantaloupe | Sow outdoors | Jun 8 – Jul 9 |
| Okra | Sow outdoors | Jun 1 – Jun 24 |
| Peas | Sow outdoors (spring) | Apr 8 – May 24 |
| Potatoes | Plant outdoors (spring) | Apr 8 – Jun 8 |
| Onions | Start seeds indoors (spring) | Feb 25 – Mar 24 |
| Onions | Transplant outdoors (spring) | Apr 25 – May 24 |
| Broccoli | Start seeds indoors (spring) | Mar 21 – Apr 24 |
| Broccoli | Transplant outdoors (spring) | Apr 25 – May 24 |
| Broccoli | Start seeds indoors (fall) | Jun 10 – Jun 20 |
| Broccoli | Transplant outdoors (fall) | Jul 10 – Jul 21 |
| Cabbage | Start seeds indoors (spring) | Mar 11 – Apr 8 |
| Cabbage | Transplant outdoors (spring) | Apr 8 – May 9 |
| Cabbage | Start seeds indoors (fall) | May 31 – Jun 30 |
| Cabbage | Transplant outdoors (fall) | Jun 30 – Jul 31 |
| Leaf lettuce | Sow outdoors (spring) | Apr 8 – Jun 24 |
| Leaf lettuce | Sow outdoors (fall) | Jun 30 – Aug 16 |
| Spinach | Sow outdoors (spring) | Apr 1 – May 15 |
| Spinach | Sow outdoors (fall) | Jul 17 – Aug 21 |
| Radishes | Sow outdoors (spring) | Apr 8 – May 29 |
| Radishes | Sow outdoors (fall) | Jun 30 – Aug 31 |
| Kale | Sow outdoors (spring) | Apr 25 – May 15 |
| Kale | Sow outdoors (fall) | Jun 23 – Jul 31 |
| Carrots | Sow outdoors (spring) | May 9 – Jun 24 |
| Carrots | Sow outdoors (fall) | May 31 – Jul 16 |
| Garlic | Plant outdoors (fall) | Sep 30 – Oct 31 |
Where these dates come from
ZIP code 49854 is matched to the NOAA station Manistique Wwtp, MI, 6.1 km away, at 600 ft elevation (17 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Manistique Wwtp, MI (used) | 600 ft | May 9 | Oct 10 |
| Garden Corners, MI | 587 ft | May 16 | Sep 24 |
| Engadine Mdot, MI | 685 ft | May 26 | Sep 30 |
| Munsing Lakeshore, MI | 612 ft | May 23 | Oct 10 |
Frost dates near Manistique
- Gulliver, MI 49840 · last May 9, first Oct 10
- Cooks, MI 49817 · last May 16, first Sep 24
- Nahma, MI 49864 · last May 16, first Sep 24
- Germfask, MI 49836 · last May 21, first Oct 5
- Garden, MI 49835 · last May 16, first Sep 24
- Gould City, MI 49838 · last May 26, first Sep 30
- Shingleton, MI 49884 · last May 16, first Oct 14
- Curtis, MI 49820 · last May 21, first Oct 5
Frequently asked questions
- When is the last frost in Manistique, MI?
- For ZIP code 49854, the average last spring frost (32°F) is May 9, based on NOAA 1991-2020 climate normals for the Manistique Wwtp, MI weather station. There is a 1-in-10 chance of a frost after May 23.
- When is the first frost in Manistique, MI?
- The average first fall frost (32°F) is October 10. There is a 1-in-10 chance of frost by September 27, so tender plants are at risk from that point on.
- How long is the growing season in 49854?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 154 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.