Frost dates for 58647New England, ND
The average last spring frost in New England is May 16 and the average first fall frost is September 24, giving a typical growing season of about 128 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 16
- Average first fall frost
- Sep 24
- Growing season
- 128 days
Safer after May 29 (1-in-10 risk)
Possible by Sep 10 (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 15 · May 27 · Jun 10 | Sep 2 · Sep 15 · Sep 27 | 110 days | 100% |
| Frost / freeze (32°F) | May 6 · May 16 · May 29 | Sep 10 · Sep 24 · Oct 5 | 128 days | 100% |
| Hard freeze (28°F) | Apr 24 · May 7 · May 20 | Sep 17 · Oct 2 · Oct 15 | 146 days | 100% |
Planting calendar for New England
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 15 – Jun 21 |
| Tomatoes | Transplant outdoors | Jun 1 – Jun 4 |
| Peppers | Start seeds indoors | Apr 15 – May 16 |
| Peppers | Transplant outdoors | Jun 15 – Jul 16 |
| Eggplant | Start seeds indoors | May 2 – May 31 |
| Eggplant | Transplant outdoors | Jun 15 – Jul 16 |
| Cucumbers | Sow outdoors | Jun 15 – Jun 14 |
| Summer squash | Sow outdoors | Jun 1 – Jul 16 |
| Winter squash & pumpkins | Sow outdoors | Jun 15 – Jul 16 |
| Snap beans | Sow outdoors | Jun 1 – Jul 7 |
| Sweet corn | Sow outdoors | Jun 1 – Jun 4 |
| Watermelon & cantaloupe | Sow outdoors | Jun 15 – Jul 16 |
| Okra | Sow outdoors | Jun 8 – Jul 1 |
| Peas | Sow outdoors (spring) | Apr 15 – May 31 |
| Potatoes | Plant outdoors (spring) | Apr 15 – Jun 15 |
| Onions | Start seeds indoors (spring) | Mar 4 – Mar 31 |
| Onions | Transplant outdoors (spring) | May 2 – May 31 |
| Broccoli | Start seeds indoors (spring) | Mar 28 – May 1 |
| Broccoli | Transplant outdoors (spring) | May 2 – May 31 |
| Broccoli | Start seeds indoors (fall) | May 25 – Jun 4 |
| Broccoli | Transplant outdoors (fall) | Jun 24 – Jul 5 |
| Cabbage | Start seeds indoors (spring) | Mar 18 – Apr 15 |
| Cabbage | Transplant outdoors (spring) | Apr 15 – May 16 |
| Cabbage | Start seeds indoors (fall) | May 15 – Jun 14 |
| Cabbage | Transplant outdoors (fall) | Jun 14 – Jul 15 |
| Leaf lettuce | Sow outdoors (spring) | Apr 15 – Jul 1 |
| Leaf lettuce | Sow outdoors (fall) | Jun 14 – Jul 31 |
| Spinach | Sow outdoors (spring) | Apr 8 – May 22 |
| Spinach | Sow outdoors (fall) | Jul 1 – Aug 5 |
| Radishes | Sow outdoors (spring) | Apr 15 – Jun 5 |
| Radishes | Sow outdoors (fall) | Jun 14 – Aug 15 |
| Kale | Sow outdoors (spring) | May 2 – May 22 |
| Kale | Sow outdoors (fall) | Jun 7 – Jul 15 |
| Carrots | Sow outdoors (spring) | May 16 – Jul 1 |
| Carrots | Sow outdoors (fall) | May 15 – Jun 30 |
| Garlic | Plant outdoors (fall) | Sep 14 – Oct 15 |
Where these dates come from
ZIP code 58647 is matched to the NOAA station New England, ND, 4 km away, at 2,600 ft elevation (28 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| New England, ND (used) | 2,600 ft | May 16 | Sep 24 |
| Theodore Roosevelt Ap, ND | 2,580 ft | May 18 | Sep 25 |
| Amidon, ND | 2,910 ft | May 12 | Sep 29 |
| Dickinson, ND | 2,460 ft | May 20 | Sep 22 |
Frost dates near New England
- Regent, ND 58650 · last May 16, first Sep 24
- Lefor, ND 58641 · last May 18, first Sep 25
- Dickinson, ND 58601 · last May 18, first Sep 25
- Amidon, ND 58620 · last May 12, first Sep 29
- South Heart, ND 58655 · last May 18, first Sep 25
- Belfield, ND 58622 · last May 9, first Sep 30
- Gladstone, ND 58630 · last May 23, first Sep 20
- Mott, ND 58646 · last May 16, first Sep 25
Frequently asked questions
- When is the last frost in New England, ND?
- For ZIP code 58647, the average last spring frost (32°F) is May 16, based on NOAA 1991-2020 climate normals for the New England, ND weather station. There is a 1-in-10 chance of a frost after May 29.
- When is the first frost in New England, ND?
- The average first fall frost (32°F) is September 24. There is a 1-in-10 chance of frost by September 10, so tender plants are at risk from that point on.
- How long is the growing season in 58647?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 128 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.