Frost dates for 58069Stirum, ND
The average last spring frost in Stirum is May 8 and the average first fall frost is September 28, giving a typical growing season of about 144 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 8
- Average first fall frost
- Sep 28
- Growing season
- 144 days
Safer after May 21 (1-in-10 risk)
Possible by Sep 16 (1-in-10 risk)
Last frost typically in 186 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 6 · May 19 · Jun 3 | Sep 6 · Sep 20 · Oct 2 | 124 days | 100% |
| Frost / freeze (32°F) | Apr 26 · May 8 · May 21 | Sep 16 · Sep 28 · Oct 12 | 144 days | 100% |
| Hard freeze (28°F) | Apr 16 · Apr 30 · May 11 | Sep 24 · Oct 7 · Oct 21 | 160 days | 100% |
Planting calendar for Stirum
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 7 – Jun 13 |
| Tomatoes | Transplant outdoors | May 24 – Jun 8 |
| Peppers | Start seeds indoors | Apr 7 – May 8 |
| Peppers | Transplant outdoors | Jun 7 – Jul 8 |
| Eggplant | Start seeds indoors | Apr 24 – May 23 |
| Eggplant | Transplant outdoors | Jun 7 – Jul 8 |
| Cucumbers | Sow outdoors | Jun 7 – Jun 18 |
| Summer squash | Sow outdoors | May 24 – Jul 8 |
| Winter squash & pumpkins | Sow outdoors | Jun 7 – Jul 8 |
| Snap beans | Sow outdoors | May 24 – Jul 11 |
| Sweet corn | Sow outdoors | May 24 – Jun 8 |
| Watermelon & cantaloupe | Sow outdoors | Jun 7 – Jul 8 |
| Okra | Sow outdoors | May 31 – Jun 23 |
| Peas | Sow outdoors (spring) | Apr 7 – May 23 |
| Potatoes | Plant outdoors (spring) | Apr 7 – Jun 7 |
| Onions | Start seeds indoors (spring) | Feb 24 – Mar 23 |
| Onions | Transplant outdoors (spring) | Apr 24 – May 23 |
| Broccoli | Start seeds indoors (spring) | Mar 20 – Apr 23 |
| Broccoli | Transplant outdoors (spring) | Apr 24 – May 23 |
| Broccoli | Start seeds indoors (fall) | May 29 – Jun 8 |
| Broccoli | Transplant outdoors (fall) | Jun 28 – Jul 9 |
| Cabbage | Start seeds indoors (spring) | Mar 10 – Apr 7 |
| Cabbage | Transplant outdoors (spring) | Apr 7 – May 8 |
| Cabbage | Start seeds indoors (fall) | May 19 – Jun 18 |
| Cabbage | Transplant outdoors (fall) | Jun 18 – Jul 19 |
| Leaf lettuce | Sow outdoors (spring) | Apr 7 – Jun 23 |
| Leaf lettuce | Sow outdoors (fall) | Jun 18 – Aug 4 |
| Spinach | Sow outdoors (spring) | Mar 31 – May 14 |
| Spinach | Sow outdoors (fall) | Jul 5 – Aug 9 |
| Radishes | Sow outdoors (spring) | Apr 7 – May 28 |
| Radishes | Sow outdoors (fall) | Jun 18 – Aug 19 |
| Kale | Sow outdoors (spring) | Apr 24 – May 14 |
| Kale | Sow outdoors (fall) | Jun 11 – Jul 19 |
| Carrots | Sow outdoors (spring) | May 8 – Jun 23 |
| Carrots | Sow outdoors (fall) | May 19 – Jul 4 |
| Garlic | Plant outdoors (fall) | Sep 18 – Oct 19 |
Where these dates come from
ZIP code 58069 is matched to the NOAA station Oakes, ND, 23.2 km away, at 1,324 ft elevation (54 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Oakes, ND (used) | 1,324 ft | May 8 | Sep 28 |
| Lisbon, ND | 1,149 ft | May 12 | Sep 27 |
| Forman 5 Sse, ND | 1,250 ft | May 7 | Oct 1 |
| La Moure, ND | 1,334 ft | May 10 | Sep 28 |
Frost dates near Stirum
- Gwinner, ND 58040 · last May 7, first Oct 1
- Cogswell, ND 58017 · last May 7, first Oct 1
- Forman, ND 58032 · last May 7, first Oct 1
- Fort Ransom, ND 58033 · last May 12, first Sep 27
- Verona, ND 58490 · last May 10, first Sep 28
- Lisbon, ND 58054 · last May 12, first Sep 27
- Milnor, ND 58060 · last May 7, first Oct 1
- Rutland, ND 58067 · last May 7, first Oct 1
Frequently asked questions
- When is the last frost in Stirum, ND?
- For ZIP code 58069, the average last spring frost (32°F) is May 8, based on NOAA 1991-2020 climate normals for the Oakes, ND weather station. There is a 1-in-10 chance of a frost after May 21.
- When is the first frost in Stirum, ND?
- The average first fall frost (32°F) is September 28. There is a 1-in-10 chance of frost by September 16, so tender plants are at risk from that point on.
- How long is the growing season in 58069?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 144 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.