Frost dates for 58795Wildrose, ND
The average last spring frost in Wildrose is May 18 and the average first fall frost is September 20, giving a typical growing season of about 124 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 18
- Average first fall frost
- Sep 20
- Growing season
- 124 days
Safer after May 30 (1-in-10 risk)
Possible by Sep 7 (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 28 · Jun 12 | Aug 28 · Sep 11 · Sep 22 | 106 days | 100% |
| Frost / freeze (32°F) | May 6 · May 18 · May 30 | Sep 7 · Sep 20 · Oct 1 | 124 days | 100% |
| Hard freeze (28°F) | Apr 27 · May 9 · May 22 | Sep 14 · Sep 27 · Oct 11 | 141 days | 100% |
Planting calendar for Wildrose
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 – May 31 |
| 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 10 |
| Summer squash | Sow outdoors | Jun 3 – Jul 18 |
| Winter squash & pumpkins | Sow outdoors | Jun 17 – Jul 18 |
| Snap beans | Sow outdoors | Jun 3 – Jul 3 |
| Sweet corn | Sow outdoors | Jun 3 – May 31 |
| 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 21 – May 31 |
| Broccoli | Transplant outdoors (fall) | Jun 20 – Jul 1 |
| Cabbage | Start seeds indoors (spring) | Mar 20 – Apr 17 |
| Cabbage | Transplant outdoors (spring) | Apr 17 – May 18 |
| Cabbage | Start seeds indoors (fall) | May 11 – Jun 10 |
| Cabbage | Transplant outdoors (fall) | Jun 10 – Jul 11 |
| Leaf lettuce | Sow outdoors (spring) | Apr 17 – Jul 3 |
| Leaf lettuce | Sow outdoors (fall) | Jun 10 – Jul 27 |
| Spinach | Sow outdoors (spring) | Apr 10 – May 24 |
| Spinach | Sow outdoors (fall) | Jun 27 – Aug 1 |
| Radishes | Sow outdoors (spring) | Apr 17 – Jun 7 |
| Radishes | Sow outdoors (fall) | Jun 10 – Aug 11 |
| Kale | Sow outdoors (spring) | May 4 – May 24 |
| Kale | Sow outdoors (fall) | Jun 3 – Jul 11 |
| Carrots | Sow outdoors (spring) | May 18 – Jul 3 |
| Carrots | Sow outdoors (fall) | May 11 – Jun 26 |
| Garlic | Plant outdoors (fall) | Sep 10 – Oct 11 |
Where these dates come from
ZIP code 58795 is matched to the NOAA station Wildrose 3Nw, ND, 11.5 km away, at 2,227 ft elevation (102 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Wildrose 3Nw, ND (used) | 2,227 ft | May 18 | Sep 20 |
| Tioga 1E, ND | 2,245 ft | May 11 | Sep 26 |
| Powers Lake 1N, ND | 2,205 ft | May 18 | Sep 17 |
| Crosby, ND | 1,959 ft | May 17 | Sep 23 |
Frost dates near Wildrose
- Mcgregor, ND 58755 · last May 18, first Sep 17
- Alamo, ND 58830 · last May 18, first Sep 20
- Tioga, ND 58852 · last May 11, first Sep 26
- Ray, ND 58849 · last May 11, first Sep 26
- Ambrose, ND 58833 · last May 17, first Sep 23
- Powers Lake, ND 58773 · last May 18, first Sep 17
- Crosby, ND 58730 · last May 17, first Sep 23
- Epping, ND 58843 · last May 13, first Sep 26
Frequently asked questions
- When is the last frost in Wildrose, ND?
- For ZIP code 58795, the average last spring frost (32°F) is May 18, based on NOAA 1991-2020 climate normals for the Wildrose 3Nw, ND weather station. There is a 1-in-10 chance of a frost after May 30.
- When is the first frost in Wildrose, ND?
- The average first fall frost (32°F) is September 20. There is a 1-in-10 chance of frost by September 7, so tender plants are at risk from that point on.
- How long is the growing season in 58795?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 124 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.