Frost dates for 49733Frederic, MI
The average last spring frost in Frederic is May 12 and the average first fall frost is October 7, giving a typical growing season of about 147 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 12
- Average first fall frost
- Oct 7
- Growing season
- 147 days
Safer after May 29 (1-in-10 risk)
Possible by Sep 24 (1-in-10 risk)
Last frost typically in 191 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 9 · May 25 · Jun 7 | Sep 12 · Sep 26 · Oct 9 | 121 days | 100% |
| Frost / freeze (32°F) | Apr 27 · May 12 · May 29 | Sep 24 · Oct 7 · Oct 22 | 147 days | 100% |
| Hard freeze (28°F) | Apr 16 · Apr 30 · May 17 | Oct 6 · Oct 22 · Nov 5 | 173 days | 100% |
Planting calendar for Frederic
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 11 – Jun 17 |
| Tomatoes | Transplant outdoors | May 28 – Jun 17 |
| Peppers | Start seeds indoors | Apr 11 – May 12 |
| Peppers | Transplant outdoors | Jun 11 – Jul 12 |
| Eggplant | Start seeds indoors | Apr 28 – May 27 |
| Eggplant | Transplant outdoors | Jun 11 – Jul 12 |
| Cucumbers | Sow outdoors | Jun 11 – Jun 27 |
| Summer squash | Sow outdoors | May 28 – Jul 12 |
| Winter squash & pumpkins | Sow outdoors | Jun 11 – Jul 12 |
| Snap beans | Sow outdoors | May 28 – Jul 20 |
| Sweet corn | Sow outdoors | May 28 – Jun 17 |
| Watermelon & cantaloupe | Sow outdoors | Jun 11 – Jul 12 |
| Okra | Sow outdoors | Jun 4 – Jun 27 |
| Peas | Sow outdoors (spring) | Apr 11 – May 27 |
| Potatoes | Plant outdoors (spring) | Apr 11 – Jun 11 |
| Onions | Start seeds indoors (spring) | Feb 28 – Mar 27 |
| Onions | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (spring) | Mar 24 – Apr 27 |
| Broccoli | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (fall) | Jun 7 – Jun 17 |
| Broccoli | Transplant outdoors (fall) | Jul 7 – Jul 18 |
| Cabbage | Start seeds indoors (spring) | Mar 14 – Apr 11 |
| Cabbage | Transplant outdoors (spring) | Apr 11 – May 12 |
| Cabbage | Start seeds indoors (fall) | May 28 – Jun 27 |
| Cabbage | Transplant outdoors (fall) | Jun 27 – Jul 28 |
| Leaf lettuce | Sow outdoors (spring) | Apr 11 – Jun 27 |
| Leaf lettuce | Sow outdoors (fall) | Jun 27 – Aug 13 |
| Spinach | Sow outdoors (spring) | Apr 4 – May 18 |
| Spinach | Sow outdoors (fall) | Jul 14 – Aug 18 |
| Radishes | Sow outdoors (spring) | Apr 11 – Jun 1 |
| Radishes | Sow outdoors (fall) | Jun 27 – Aug 28 |
| Kale | Sow outdoors (spring) | Apr 28 – May 18 |
| Kale | Sow outdoors (fall) | Jun 20 – Jul 28 |
| Carrots | Sow outdoors (spring) | May 12 – Jun 27 |
| Carrots | Sow outdoors (fall) | May 28 – Jul 13 |
| Garlic | Plant outdoors (fall) | Sep 27 – Oct 28 |
Where these dates come from
ZIP code 49733 is matched to the NOAA station Gaylord 9Ssw, MI, 8.2 km away, at 1,468 ft elevation (96 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Gaylord 9Ssw, MI (used) | 1,468 ft | May 12 | Oct 7 |
| Gaylord 9 Ssw, MI | 1,461 ft | May 15 | Oct 7 |
| Gaylord Otsego Co Ap, MI | 1,335 ft | May 22 | Sep 30 |
| Grayling, MI | 1,137 ft | May 23 | Sep 27 |
Frost dates near Frederic
- Waters, MI 49797 · last May 12, first Oct 7
- Grayling, MI 49739 · last May 23, first Sep 27
- Gaylord, MI 49735 · last May 22, first Sep 30
- Alba, MI 49611 · last May 25, first Sep 26
- Elmira, MI 49730 · last May 25, first Sep 26
- Lewiston, MI 49756 · last May 22, first Sep 27
- Johannesburg, MI 49751 · last May 22, first Sep 30
- Mancelona, MI 49659 · last May 24, first Oct 1
Frequently asked questions
- When is the last frost in Frederic, MI?
- For ZIP code 49733, the average last spring frost (32°F) is May 12, based on NOAA 1991-2020 climate normals for the Gaylord 9Ssw, MI weather station. There is a 1-in-10 chance of a frost after May 29.
- When is the first frost in Frederic, MI?
- The average first fall frost (32°F) is October 7. There is a 1-in-10 chance of frost by September 24, so tender plants are at risk from that point on.
- How long is the growing season in 49733?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 147 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.