Frost dates for 58355Nekoma, ND
The average last spring frost in Nekoma is May 15 and the average first fall frost is September 22, giving a typical growing season of about 128 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 15
- Average first fall frost
- Sep 22
- Growing season
- 128 days
Safer after May 31 (1-in-10 risk)
Possible by Sep 11 (1-in-10 risk)
Last frost typically in 193 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 13 · May 26 · Jun 10 | Sep 1 · Sep 15 · Sep 25 | 108 days | 100% |
| Frost / freeze (32°F) | May 4 · May 15 · May 31 | Sep 11 · Sep 22 · Oct 3 | 128 days | 100% |
| Hard freeze (28°F) | Apr 21 · May 4 · May 17 | Sep 20 · Oct 1 · Oct 14 | 147 days | 100% |
Planting calendar for Nekoma
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 14 – Jun 20 |
| Tomatoes | Transplant outdoors | May 31 – Jun 2 |
| Peppers | Start seeds indoors | Apr 14 – May 15 |
| Peppers | Transplant outdoors | Jun 14 – Jul 15 |
| Eggplant | Start seeds indoors | May 1 – May 30 |
| Eggplant | Transplant outdoors | Jun 14 – Jul 15 |
| Cucumbers | Sow outdoors | Jun 14 – Jun 12 |
| Summer squash | Sow outdoors | May 31 – Jul 15 |
| Winter squash & pumpkins | Sow outdoors | Jun 14 – Jul 15 |
| Snap beans | Sow outdoors | May 31 – Jul 5 |
| Sweet corn | Sow outdoors | May 31 – Jun 2 |
| Watermelon & cantaloupe | Sow outdoors | Jun 14 – Jul 15 |
| Okra | Sow outdoors | Jun 7 – Jun 30 |
| Peas | Sow outdoors (spring) | Apr 14 – May 30 |
| Potatoes | Plant outdoors (spring) | Apr 14 – Jun 14 |
| Onions | Start seeds indoors (spring) | Mar 3 – Mar 30 |
| Onions | Transplant outdoors (spring) | May 1 – May 30 |
| Broccoli | Start seeds indoors (spring) | Mar 27 – Apr 30 |
| Broccoli | Transplant outdoors (spring) | May 1 – May 30 |
| Broccoli | Start seeds indoors (fall) | May 23 – Jun 2 |
| Broccoli | Transplant outdoors (fall) | Jun 22 – Jul 3 |
| Cabbage | Start seeds indoors (spring) | Mar 17 – Apr 14 |
| Cabbage | Transplant outdoors (spring) | Apr 14 – May 15 |
| Cabbage | Start seeds indoors (fall) | May 13 – Jun 12 |
| Cabbage | Transplant outdoors (fall) | Jun 12 – Jul 13 |
| Leaf lettuce | Sow outdoors (spring) | Apr 14 – Jun 30 |
| Leaf lettuce | Sow outdoors (fall) | Jun 12 – Jul 29 |
| Spinach | Sow outdoors (spring) | Apr 7 – May 21 |
| Spinach | Sow outdoors (fall) | Jun 29 – Aug 3 |
| Radishes | Sow outdoors (spring) | Apr 14 – Jun 4 |
| Radishes | Sow outdoors (fall) | Jun 12 – Aug 13 |
| Kale | Sow outdoors (spring) | May 1 – May 21 |
| Kale | Sow outdoors (fall) | Jun 5 – Jul 13 |
| Carrots | Sow outdoors (spring) | May 15 – Jun 30 |
| Carrots | Sow outdoors (fall) | May 13 – Jun 28 |
| Garlic | Plant outdoors (fall) | Sep 12 – Oct 13 |
Where these dates come from
ZIP code 58355 is matched to the NOAA station Edmore 4Nw, ND, 17.1 km away, at 1,539 ft elevation (95 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Edmore 4Nw, ND (used) | 1,539 ft | May 15 | Sep 22 |
| Langdon Exp Farm, ND | 1,615 ft | May 17 | Sep 26 |
| Cavalier 7Nw, ND | 899 ft | May 12 | Sep 30 |
| Devils Lake Kdlr, ND | 1,464 ft | May 6 | Oct 5 |
Frost dates near Nekoma
- Fairdale, ND 58229 · last May 15, first Sep 22
- Edmore, ND 58330 · last May 15, first Sep 22
- Alsen, ND 58311 · last May 17, first Sep 26
- Osnabrock, ND 58269 · last May 17, first Sep 26
- Hampden, ND 58338 · last May 15, first Sep 22
- Langdon, ND 58249 · last May 17, first Sep 26
- Milton, ND 58260 · last May 17, first Sep 26
- Adams, ND 58210 · last May 15, first Sep 22
Frequently asked questions
- When is the last frost in Nekoma, ND?
- For ZIP code 58355, the average last spring frost (32°F) is May 15, based on NOAA 1991-2020 climate normals for the Edmore 4Nw, ND weather station. There is a 1-in-10 chance of a frost after May 31.
- When is the first frost in Nekoma, ND?
- The average first fall frost (32°F) is September 22. There is a 1-in-10 chance of frost by September 11, so tender plants are at risk from that point on.
- How long is the growing season in 58355?
- 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.