Frost dates for 48749Omer, MI
The average last spring frost in Omer is May 5 and the average first fall frost is October 10, giving a typical growing season of about 156 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 5
- Average first fall frost
- Oct 10
- Growing season
- 156 days
Safer after May 23 (1-in-10 risk)
Possible by Sep 26 (1-in-10 risk)
Last frost typically in 184 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 1 · May 18 · Jun 1 | Sep 15 · Sep 29 · Oct 11 | 132 days | 100% |
| Frost / freeze (32°F) | Apr 21 · May 5 · May 23 | Sep 26 · Oct 10 · Oct 27 | 156 days | 100% |
| Hard freeze (28°F) | Apr 9 · Apr 24 · May 12 | Oct 7 · Oct 25 · Nov 9 | 182 days | 100% |
Planting calendar for Omer
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 4 – Jun 10 |
| Tomatoes | Transplant outdoors | May 21 – Jun 20 |
| Peppers | Start seeds indoors | Apr 4 – May 5 |
| Peppers | Transplant outdoors | Jun 4 – Jul 5 |
| Eggplant | Start seeds indoors | Apr 21 – May 20 |
| Eggplant | Transplant outdoors | Jun 4 – Jul 5 |
| Cucumbers | Sow outdoors | Jun 4 – Jun 30 |
| Summer squash | Sow outdoors | May 21 – Jul 5 |
| Winter squash & pumpkins | Sow outdoors | Jun 4 – Jul 5 |
| Snap beans | Sow outdoors | May 21 – Jul 23 |
| Sweet corn | Sow outdoors | May 21 – Jun 20 |
| Watermelon & cantaloupe | Sow outdoors | Jun 4 – Jul 5 |
| Okra | Sow outdoors | May 28 – Jun 20 |
| Peas | Sow outdoors (spring) | Apr 4 – May 20 |
| Potatoes | Plant outdoors (spring) | Apr 4 – Jun 4 |
| Onions | Start seeds indoors (spring) | Feb 21 – Mar 20 |
| Onions | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (spring) | Mar 17 – Apr 20 |
| Broccoli | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (fall) | Jun 10 – Jun 20 |
| Broccoli | Transplant outdoors (fall) | Jul 10 – Jul 21 |
| Cabbage | Start seeds indoors (spring) | Mar 7 – Apr 4 |
| Cabbage | Transplant outdoors (spring) | Apr 4 – May 5 |
| Cabbage | Start seeds indoors (fall) | May 31 – Jun 30 |
| Cabbage | Transplant outdoors (fall) | Jun 30 – Jul 31 |
| Leaf lettuce | Sow outdoors (spring) | Apr 4 – Jun 20 |
| Leaf lettuce | Sow outdoors (fall) | Jun 30 – Aug 16 |
| Spinach | Sow outdoors (spring) | Mar 28 – May 11 |
| Spinach | Sow outdoors (fall) | Jul 17 – Aug 21 |
| Radishes | Sow outdoors (spring) | Apr 4 – May 25 |
| Radishes | Sow outdoors (fall) | Jun 30 – Aug 31 |
| Kale | Sow outdoors (spring) | Apr 21 – May 11 |
| Kale | Sow outdoors (fall) | Jun 23 – Jul 31 |
| Carrots | Sow outdoors (spring) | May 5 – Jun 20 |
| Carrots | Sow outdoors (fall) | May 31 – Jul 16 |
| Garlic | Plant outdoors (fall) | Sep 30 – Oct 31 |
Where these dates come from
ZIP code 48749 is matched to the NOAA station Standish 4Ne, MI, 6 km away, at 615 ft elevation (5 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Standish 4Ne, MI (used) | 615 ft | May 5 | Oct 10 |
| Hale 5Ssw #2, MI | 816 ft | May 23 | Sep 26 |
| W Branch 3Se, MI | 885 ft | May 15 | Oct 4 |
| E Tawas, MI | 586 ft | May 8 | Oct 5 |
Frost dates near Omer
- Twining, MI 48766 · last May 5, first Oct 10
- Au Gres, MI 48703 · last May 5, first Oct 10
- Standish, MI 48658 · last May 5, first Oct 10
- Turner, MI 48765 · last May 5, first Oct 10
- Sterling, MI 48659 · last May 5, first Oct 10
- Whittemore, MI 48770 · last May 23, first Sep 26
- Prescott, MI 48756 · last May 15, first Oct 4
- Bentley, MI 48613 · last May 5, first Oct 10
Frequently asked questions
- When is the last frost in Omer, MI?
- For ZIP code 48749, the average last spring frost (32°F) is May 5, based on NOAA 1991-2020 climate normals for the Standish 4Ne, MI weather station. There is a 1-in-10 chance of a frost after May 23.
- When is the first frost in Omer, MI?
- The average first fall frost (32°F) is October 10. There is a 1-in-10 chance of frost by September 26, so tender plants are at risk from that point on.
- How long is the growing season in 48749?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 156 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.