Frost dates for 58563New Salem, ND
The average last spring frost in New Salem is May 18 and the average first fall frost is September 24, giving a typical growing season of about 127 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 18
- Average first fall frost
- Sep 24
- Growing season
- 127 days
Safer after Jun 1 (1-in-10 risk)
Possible by Sep 12 (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 17 · May 30 · Jun 13 | Sep 1 · Sep 15 · Sep 27 | 106 days | 100% |
| Frost / freeze (32°F) | May 6 · May 18 · Jun 1 | Sep 12 · Sep 24 · Oct 6 | 127 days | 100% |
| Hard freeze (28°F) | Apr 27 · May 8 · May 23 | Sep 21 · Oct 3 · Oct 16 | 147 days | 100% |
Planting calendar for New Salem
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 17 – Jun 23 |
| Tomatoes | Transplant outdoors | Jun 3 – Jun 4 |
| Peppers | Start seeds indoors | Apr 17 – May 18 |
| Peppers | Transplant outdoors | Jun 17 – Jul 18 |
| Eggplant | Start seeds indoors | May 4 – Jun 2 |
| Eggplant | Transplant outdoors | Jun 17 – Jul 18 |
| Cucumbers | Sow outdoors | Jun 17 – Jun 14 |
| Summer squash | Sow outdoors | Jun 3 – Jul 18 |
| Winter squash & pumpkins | Sow outdoors | Jun 17 – Jul 18 |
| Snap beans | Sow outdoors | Jun 3 – Jul 7 |
| Sweet corn | Sow outdoors | Jun 3 – Jun 4 |
| Watermelon & cantaloupe | Sow outdoors | Jun 17 – Jul 18 |
| Okra | Sow outdoors | Jun 10 – Jul 3 |
| Peas | Sow outdoors (spring) | Apr 17 – Jun 2 |
| Potatoes | Plant outdoors (spring) | Apr 17 – Jun 17 |
| Onions | Start seeds indoors (spring) | Mar 6 – Apr 2 |
| Onions | Transplant outdoors (spring) | May 4 – Jun 2 |
| Broccoli | Start seeds indoors (spring) | Mar 30 – May 3 |
| Broccoli | Transplant outdoors (spring) | May 4 – Jun 2 |
| Broccoli | Start seeds indoors (fall) | May 25 – Jun 4 |
| Broccoli | Transplant outdoors (fall) | Jun 24 – Jul 5 |
| Cabbage | Start seeds indoors (spring) | Mar 20 – Apr 17 |
| Cabbage | Transplant outdoors (spring) | Apr 17 – May 18 |
| Cabbage | Start seeds indoors (fall) | May 15 – Jun 14 |
| Cabbage | Transplant outdoors (fall) | Jun 14 – Jul 15 |
| Leaf lettuce | Sow outdoors (spring) | Apr 17 – Jul 3 |
| Leaf lettuce | Sow outdoors (fall) | Jun 14 – Jul 31 |
| Spinach | Sow outdoors (spring) | Apr 10 – May 24 |
| Spinach | Sow outdoors (fall) | Jul 1 – Aug 5 |
| Radishes | Sow outdoors (spring) | Apr 17 – Jun 7 |
| Radishes | Sow outdoors (fall) | Jun 14 – Aug 15 |
| Kale | Sow outdoors (spring) | May 4 – May 24 |
| Kale | Sow outdoors (fall) | Jun 7 – Jul 15 |
| Carrots | Sow outdoors (spring) | May 18 – Jul 3 |
| Carrots | Sow outdoors (fall) | May 15 – Jun 30 |
| Garlic | Plant outdoors (fall) | Sep 14 – Oct 15 |
Where these dates come from
ZIP code 58563 is matched to the NOAA station New Salem 5Nw, ND, 10.7 km away, at 2,150 ft elevation (68 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| New Salem 5Nw, ND (used) | 2,150 ft | May 18 | Sep 24 |
| Almont, ND | 1,915 ft | May 17 | Sep 21 |
| Center 4Se, ND | 1,990 ft | May 11 | Sep 29 |
| Heart Butte Dam, ND | 2,134 ft | May 14 | Sep 29 |
Frost dates near New Salem
- Almont, ND 58520 · last May 17, first Sep 21
- Flasher, ND 58535 · last May 13, first Sep 27
- Glen Ullin, ND 58631 · last May 19, first Sep 21
- Carson, ND 58529 · last May 19, first Sep 25
- Mandan, ND 58554 · last May 13, first Sep 27
- Center, ND 58530 · last May 11, first Sep 29
- Saint Anthony, ND 58566 · last May 13, first Sep 27
- Hebron, ND 58638 · last May 19, first Sep 21
Frequently asked questions
- When is the last frost in New Salem, ND?
- For ZIP code 58563, the average last spring frost (32°F) is May 18, based on NOAA 1991-2020 climate normals for the New Salem 5Nw, ND weather station. There is a 1-in-10 chance of a frost after June 1.
- When is the first frost in New Salem, ND?
- The average first fall frost (32°F) is September 24. There is a 1-in-10 chance of frost by September 12, so tender plants are at risk from that point on.
- How long is the growing season in 58563?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 127 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.