Frost dates for 49760Moran, MI
The average last spring frost in Moran is May 23 and the average first fall frost is September 30, giving a typical growing season of about 130 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 23
- Average first fall frost
- Sep 30
- Growing season
- 130 days
Safer after Jun 6 (1-in-10 risk)
Possible by Sep 15 (1-in-10 risk)
Last frost typically in 209 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 23 · Jun 5 · Jun 22 | Sep 4 · Sep 18 · Oct 2 | 104 days | 100% |
| Frost / freeze (32°F) | May 6 · May 23 · Jun 6 | Sep 15 · Sep 30 · Oct 13 | 130 days | 100% |
| Hard freeze (28°F) | Apr 24 · May 8 · May 24 | Sep 27 · Oct 13 · Oct 30 | 156 days | 100% |
Planting calendar for Moran
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 22 – Jun 28 |
| Tomatoes | Transplant outdoors | Jun 8 – Jun 10 |
| Peppers | Start seeds indoors | Apr 22 – May 23 |
| Peppers | Transplant outdoors | Jun 22 – Jul 23 |
| Eggplant | Start seeds indoors | May 9 – Jun 7 |
| Eggplant | Transplant outdoors | Jun 22 – Jul 23 |
| Cucumbers | Sow outdoors | Jun 22 – Jun 20 |
| Summer squash | Sow outdoors | Jun 8 – Jul 23 |
| Winter squash & pumpkins | Sow outdoors | Jun 22 – Jul 23 |
| Snap beans | Sow outdoors | Jun 8 – Jul 13 |
| Sweet corn | Sow outdoors | Jun 8 – Jun 10 |
| Watermelon & cantaloupe | Sow outdoors | Jun 22 – Jul 23 |
| Okra | Sow outdoors | Jun 15 – Jul 8 |
| Peas | Sow outdoors (spring) | Apr 22 – Jun 7 |
| Potatoes | Plant outdoors (spring) | Apr 22 – Jun 22 |
| Onions | Start seeds indoors (spring) | Mar 11 – Apr 7 |
| Onions | Transplant outdoors (spring) | May 9 – Jun 7 |
| Broccoli | Start seeds indoors (spring) | Apr 4 – May 8 |
| Broccoli | Transplant outdoors (spring) | May 9 – Jun 7 |
| Broccoli | Start seeds indoors (fall) | May 31 – Jun 10 |
| Broccoli | Transplant outdoors (fall) | Jun 30 – Jul 11 |
| Cabbage | Start seeds indoors (spring) | Mar 25 – Apr 22 |
| Cabbage | Transplant outdoors (spring) | Apr 22 – May 23 |
| Cabbage | Start seeds indoors (fall) | May 21 – Jun 20 |
| Cabbage | Transplant outdoors (fall) | Jun 20 – Jul 21 |
| Leaf lettuce | Sow outdoors (spring) | Apr 22 – Jul 8 |
| Leaf lettuce | Sow outdoors (fall) | Jun 20 – Aug 6 |
| Spinach | Sow outdoors (spring) | Apr 15 – May 29 |
| Spinach | Sow outdoors (fall) | Jul 7 – Aug 11 |
| Radishes | Sow outdoors (spring) | Apr 22 – Jun 12 |
| Radishes | Sow outdoors (fall) | Jun 20 – Aug 21 |
| Kale | Sow outdoors (spring) | May 9 – May 29 |
| Kale | Sow outdoors (fall) | Jun 13 – Jul 21 |
| Carrots | Sow outdoors (spring) | May 23 – Jul 8 |
| Carrots | Sow outdoors (fall) | May 21 – Jul 6 |
| Garlic | Plant outdoors (fall) | Sep 20 – Oct 21 |
Where these dates come from
ZIP code 49760 is matched to the NOAA station Moran, MI, 14.5 km away, at 695 ft elevation (40 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Moran, MI (used) | 695 ft | May 23 | Sep 30 |
| Trout Lake 1Sw, MI | 823 ft | May 21 | Oct 1 |
| St Ignace, MI | 661 ft | May 16 | Oct 13 |
| St Ignace Mackinac Br, MI | 595 ft | May 7 | Oct 23 |
Frost dates near Moran
- Trout Lake, MI 49793 · last May 21, first Oct 1
- Saint Ignace, MI 49781 · last May 23, first Sep 30
- Rudyard, MI 49780 · last May 21, first Oct 1
- Naubinway, MI 49762 · last May 26, first Sep 30
- Mackinac Island, MI 49757 · last May 7, first Oct 23
- Mackinaw City, MI 49701 · last May 7, first Oct 23
- Carp Lake, MI 49718 · last May 7, first Oct 23
- Eckerman, MI 49728 · last May 21, first Oct 1
Frequently asked questions
- When is the last frost in Moran, MI?
- For ZIP code 49760, the average last spring frost (32°F) is May 23, based on NOAA 1991-2020 climate normals for the Moran, MI weather station. There is a 1-in-10 chance of a frost after June 6.
- When is the first frost in Moran, MI?
- The average first fall frost (32°F) is September 30. There is a 1-in-10 chance of frost by September 15, so tender plants are at risk from that point on.
- How long is the growing season in 49760?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 130 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.