Frost dates for 49864Nahma, MI
The average last spring frost in Nahma is May 16 and the average first fall frost is September 24, giving a typical growing season of about 129 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 16
- Average first fall frost
- Sep 24
- Growing season
- 129 days
Safer after Jun 3 (1-in-10 risk)
Possible by Sep 1 (1-in-10 risk)
Last frost typically in 202 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 17 · Jun 1 · Jun 29 | Aug 16 · Sep 4 · Sep 29 | 94 days | 100% |
| Frost / freeze (32°F) | May 1 · May 16 · Jun 3 | Sep 1 · Sep 24 · Oct 12 | 129 days | 100% |
| Hard freeze (28°F) | Apr 19 · May 3 · May 20 | Sep 16 · Oct 7 · Oct 27 | 157 days | 100% |
Planting calendar for Nahma
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 15 – Jun 21 |
| Tomatoes | Transplant outdoors | Jun 1 – Jun 4 |
| Peppers | Start seeds indoors | Apr 15 – May 16 |
| Peppers | Transplant outdoors | Jun 15 – Jul 16 |
| Eggplant | Start seeds indoors | May 2 – May 31 |
| Eggplant | Transplant outdoors | Jun 15 – Jul 16 |
| Cucumbers | Sow outdoors | Jun 15 – Jun 14 |
| Summer squash | Sow outdoors | Jun 1 – Jul 16 |
| Winter squash & pumpkins | Sow outdoors | Jun 15 – Jul 16 |
| Snap beans | Sow outdoors | Jun 1 – Jul 7 |
| Sweet corn | Sow outdoors | Jun 1 – Jun 4 |
| Watermelon & cantaloupe | Sow outdoors | Jun 15 – Jul 16 |
| Okra | Sow outdoors | Jun 8 – Jul 1 |
| Peas | Sow outdoors (spring) | Apr 15 – May 31 |
| Potatoes | Plant outdoors (spring) | Apr 15 – Jun 15 |
| Onions | Start seeds indoors (spring) | Mar 4 – Mar 31 |
| Onions | Transplant outdoors (spring) | May 2 – May 31 |
| Broccoli | Start seeds indoors (spring) | Mar 28 – May 1 |
| Broccoli | Transplant outdoors (spring) | May 2 – May 31 |
| Broccoli | Start seeds indoors (fall) | May 25 – Jun 4 |
| Broccoli | Transplant outdoors (fall) | Jun 24 – Jul 5 |
| Cabbage | Start seeds indoors (spring) | Mar 18 – Apr 15 |
| Cabbage | Transplant outdoors (spring) | Apr 15 – May 16 |
| Cabbage | Start seeds indoors (fall) | May 15 – Jun 14 |
| Cabbage | Transplant outdoors (fall) | Jun 14 – Jul 15 |
| Leaf lettuce | Sow outdoors (spring) | Apr 15 – Jul 1 |
| Leaf lettuce | Sow outdoors (fall) | Jun 14 – Jul 31 |
| Spinach | Sow outdoors (spring) | Apr 8 – May 22 |
| Spinach | Sow outdoors (fall) | Jul 1 – Aug 5 |
| Radishes | Sow outdoors (spring) | Apr 15 – Jun 5 |
| Radishes | Sow outdoors (fall) | Jun 14 – Aug 15 |
| Kale | Sow outdoors (spring) | May 2 – May 22 |
| Kale | Sow outdoors (fall) | Jun 7 – Jul 15 |
| Carrots | Sow outdoors (spring) | May 16 – Jul 1 |
| Carrots | Sow outdoors (fall) | May 15 – Jun 30 |
| Garlic | Plant outdoors (fall) | Sep 14 – Oct 15 |
Where these dates come from
ZIP code 49864 is matched to the NOAA station Garden Corners, MI, 10.4 km away, at 587 ft elevation (4 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Garden Corners, MI (used) | 587 ft | May 16 | Sep 24 |
| Rapid Rvr 4Sse, MI | 598 ft | May 18 | Oct 4 |
| Manistique Wwtp, MI | 600 ft | May 9 | Oct 10 |
| Escanaba, MI | 590 ft | May 13 | Oct 7 |
Frost dates near Nahma
- Garden, MI 49835 · last May 16, first Sep 24
- Cooks, MI 49817 · last May 16, first Sep 24
- Rapid River, MI 49878 · last May 18, first Oct 4
- Wells, MI 49894 · last May 19, first Oct 1
- Escanaba, MI 49829 · last May 19, first Oct 1
- Gladstone, MI 49837 · last May 19, first Oct 1
- Manistique, MI 49854 · last May 9, first Oct 10
- Perkins, MI 49872 · last May 19, first Oct 1
Frequently asked questions
- When is the last frost in Nahma, MI?
- For ZIP code 49864, the average last spring frost (32°F) is May 16, based on NOAA 1991-2020 climate normals for the Garden Corners, MI weather station. There is a 1-in-10 chance of a frost after June 3.
- When is the first frost in Nahma, MI?
- The average first fall frost (32°F) is September 24. There is a 1-in-10 chance of frost by September 1, so tender plants are at risk from that point on.
- How long is the growing season in 49864?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 129 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.