Frost dates for 49868Newberry, MI
The average last spring frost in Newberry is May 21 and the average first fall frost is October 5, giving a typical growing season of about 135 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 21
- Average first fall frost
- Oct 5
- Growing season
- 135 days
Safer after Jun 4 (1-in-10 risk)
Possible by Sep 20 (1-in-10 risk)
Last frost typically in 207 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 20 · Jun 2 · Jun 21 | Sep 6 · Sep 24 · Oct 7 | 111 days | 100% |
| Frost / freeze (32°F) | May 4 · May 21 · Jun 4 | Sep 20 · Oct 5 · Oct 21 | 135 days | 100% |
| Hard freeze (28°F) | Apr 24 · May 6 · May 23 | Oct 1 · Oct 18 · Nov 4 | 163 days | 100% |
Planting calendar for Newberry
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 20 – Jun 26 |
| Tomatoes | Transplant outdoors | Jun 6 – Jun 15 |
| Peppers | Start seeds indoors | Apr 20 – May 21 |
| Peppers | Transplant outdoors | Jun 20 – Jul 21 |
| Eggplant | Start seeds indoors | May 7 – Jun 5 |
| Eggplant | Transplant outdoors | Jun 20 – Jul 21 |
| Cucumbers | Sow outdoors | Jun 20 – Jun 25 |
| Summer squash | Sow outdoors | Jun 6 – Jul 21 |
| Winter squash & pumpkins | Sow outdoors | Jun 20 – Jul 21 |
| Snap beans | Sow outdoors | Jun 6 – Jul 18 |
| Sweet corn | Sow outdoors | Jun 6 – Jun 15 |
| Watermelon & cantaloupe | Sow outdoors | Jun 20 – Jul 21 |
| Okra | Sow outdoors | Jun 13 – Jul 6 |
| Peas | Sow outdoors (spring) | Apr 20 – Jun 5 |
| Potatoes | Plant outdoors (spring) | Apr 20 – Jun 20 |
| Onions | Start seeds indoors (spring) | Mar 9 – Apr 5 |
| Onions | Transplant outdoors (spring) | May 7 – Jun 5 |
| Broccoli | Start seeds indoors (spring) | Apr 2 – May 6 |
| Broccoli | Transplant outdoors (spring) | May 7 – Jun 5 |
| Broccoli | Start seeds indoors (fall) | Jun 5 – Jun 15 |
| Broccoli | Transplant outdoors (fall) | Jul 5 – Jul 16 |
| Cabbage | Start seeds indoors (spring) | Mar 23 – Apr 20 |
| Cabbage | Transplant outdoors (spring) | Apr 20 – May 21 |
| Cabbage | Start seeds indoors (fall) | May 26 – Jun 25 |
| Cabbage | Transplant outdoors (fall) | Jun 25 – Jul 26 |
| Leaf lettuce | Sow outdoors (spring) | Apr 20 – Jul 6 |
| Leaf lettuce | Sow outdoors (fall) | Jun 25 – Aug 11 |
| Spinach | Sow outdoors (spring) | Apr 13 – May 27 |
| Spinach | Sow outdoors (fall) | Jul 12 – Aug 16 |
| Radishes | Sow outdoors (spring) | Apr 20 – Jun 10 |
| Radishes | Sow outdoors (fall) | Jun 25 – Aug 26 |
| Kale | Sow outdoors (spring) | May 7 – May 27 |
| Kale | Sow outdoors (fall) | Jun 18 – Jul 26 |
| Carrots | Sow outdoors (spring) | May 21 – Jul 6 |
| Carrots | Sow outdoors (fall) | May 26 – Jul 11 |
| Garlic | Plant outdoors (fall) | Sep 25 – Oct 26 |
Where these dates come from
ZIP code 49868 is matched to the NOAA station Newberry Correctional Facility, MI, 1.9 km away, at 886 ft elevation (73 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Newberry Correctional Facility, MI (used) | 886 ft | May 21 | Oct 5 |
| Engadine Mdot, MI | 685 ft | May 26 | Sep 30 |
| Tahquamenon Falls Sp, MI | 745 ft | — | — |
| Trout Lake 1Sw, MI | 823 ft | May 21 | Oct 1 |
Frost dates near Newberry
- Engadine, MI 49827 · last May 21, first Oct 5
- Mc Millan, MI 49853 · last May 21, first Oct 5
- Naubinway, MI 49762 · last May 26, first Sep 30
- Curtis, MI 49820 · last May 21, first Oct 5
- Hulbert, MI 49748 · last —, first —
- Germfask, MI 49836 · last May 21, first Oct 5
- Gould City, MI 49838 · last May 26, first Sep 30
- Seney, MI 49883 · last May 27, first Oct 10
Frequently asked questions
- When is the last frost in Newberry, MI?
- For ZIP code 49868, the average last spring frost (32°F) is May 21, based on NOAA 1991-2020 climate normals for the Newberry Correctional Facility, MI weather station. There is a 1-in-10 chance of a frost after June 4.
- When is the first frost in Newberry, MI?
- The average first fall frost (32°F) is October 5. There is a 1-in-10 chance of frost by September 20, so tender plants are at risk from that point on.
- How long is the growing season in 49868?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 135 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.