Frost dates for 49779Rogers City, MI
The average last spring frost in Rogers City is May 10 and the average first fall frost is October 14, giving a typical growing season of about 154 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 10
- Average first fall frost
- Oct 14
- Growing season
- 154 days
Safer after May 24 (1-in-10 risk)
Possible by Sep 30 (1-in-10 risk)
Last frost typically in 196 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 10 · May 24 · Jun 5 | Sep 17 · Oct 1 · Oct 15 | 130 days | 100% |
| Frost / freeze (32°F) | Apr 28 · May 10 · May 24 | Sep 30 · Oct 14 · Oct 31 | 154 days | 100% |
| Hard freeze (28°F) | Apr 15 · Apr 29 · May 15 | Oct 11 · Oct 28 · Nov 12 | 180 days | 100% |
Planting calendar for Rogers City
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 9 – Jun 15 |
| Tomatoes | Transplant outdoors | May 26 – Jun 24 |
| Peppers | Start seeds indoors | Apr 9 – May 10 |
| Peppers | Transplant outdoors | Jun 9 – Jul 10 |
| Eggplant | Start seeds indoors | Apr 26 – May 25 |
| Eggplant | Transplant outdoors | Jun 9 – Jul 10 |
| Cucumbers | Sow outdoors | Jun 9 – Jul 4 |
| Summer squash | Sow outdoors | May 26 – Jul 10 |
| Winter squash & pumpkins | Sow outdoors | Jun 9 – Jul 10 |
| Snap beans | Sow outdoors | May 26 – Jul 27 |
| Sweet corn | Sow outdoors | May 26 – Jun 24 |
| Watermelon & cantaloupe | Sow outdoors | Jun 9 – Jul 10 |
| Okra | Sow outdoors | Jun 2 – Jun 25 |
| Peas | Sow outdoors (spring) | Apr 9 – May 25 |
| Potatoes | Plant outdoors (spring) | Apr 9 – Jun 9 |
| Onions | Start seeds indoors (spring) | Feb 26 – Mar 25 |
| Onions | Transplant outdoors (spring) | Apr 26 – May 25 |
| Broccoli | Start seeds indoors (spring) | Mar 22 – Apr 25 |
| Broccoli | Transplant outdoors (spring) | Apr 26 – May 25 |
| Broccoli | Start seeds indoors (fall) | Jun 14 – Jun 24 |
| Broccoli | Transplant outdoors (fall) | Jul 14 – Jul 25 |
| Cabbage | Start seeds indoors (spring) | Mar 12 – Apr 9 |
| Cabbage | Transplant outdoors (spring) | Apr 9 – May 10 |
| Cabbage | Start seeds indoors (fall) | Jun 4 – Jul 4 |
| Cabbage | Transplant outdoors (fall) | Jul 4 – Aug 4 |
| Leaf lettuce | Sow outdoors (spring) | Apr 9 – Jun 25 |
| Leaf lettuce | Sow outdoors (fall) | Jul 4 – Aug 20 |
| Spinach | Sow outdoors (spring) | Apr 2 – May 16 |
| Spinach | Sow outdoors (fall) | Jul 21 – Aug 25 |
| Radishes | Sow outdoors (spring) | Apr 9 – May 30 |
| Radishes | Sow outdoors (fall) | Jul 4 – Sep 4 |
| Kale | Sow outdoors (spring) | Apr 26 – May 16 |
| Kale | Sow outdoors (fall) | Jun 27 – Aug 4 |
| Carrots | Sow outdoors (spring) | May 10 – Jun 25 |
| Carrots | Sow outdoors (fall) | Jun 4 – Jul 20 |
| Garlic | Plant outdoors (fall) | Oct 4 – Nov 4 |
Where these dates come from
ZIP code 49779 is matched to the NOAA station Rogers City, MI, 1.6 km away, at 615 ft elevation (51 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Rogers City, MI (used) | 615 ft | May 10 | Oct 14 |
| Onaway 4N, MI | 745 ft | May 22 | Oct 2 |
| Alpena 10Nw, MI | 740 ft | May 13 | Oct 3 |
| Alpena Co Rgnl Ap, MI | 684 ft | May 17 | Oct 1 |
Frost dates near Rogers City
- Hawks, MI 49743 · last May 10, first Oct 14
- Millersburg, MI 49759 · last May 22, first Oct 2
- Posen, MI 49776 · last May 17, first Oct 1
- Presque Isle, MI 49777 · last May 10, first Oct 14
- Onaway, MI 49765 · last May 22, first Oct 2
- Tower, MI 49792 · last May 22, first Oct 2
- Hillman, MI 49746 · last May 22, first Sep 27
- Lachine, MI 49753 · last May 17, first Oct 1
Frequently asked questions
- When is the last frost in Rogers City, MI?
- For ZIP code 49779, the average last spring frost (32°F) is May 10, based on NOAA 1991-2020 climate normals for the Rogers City, MI weather station. There is a 1-in-10 chance of a frost after May 24.
- When is the first frost in Rogers City, MI?
- The average first fall frost (32°F) is October 14. There is a 1-in-10 chance of frost by September 30, so tender plants are at risk from that point on.
- How long is the growing season in 49779?
- 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.