Frost dates for 58441Fullerton, ND
The average last spring frost in Fullerton is May 9 and the average first fall frost is September 28, giving a typical growing season of about 141 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 9
- Average first fall frost
- Sep 28
- Growing season
- 141 days
Safer after May 23 (1-in-10 risk)
Possible by Sep 17 (1-in-10 risk)
Last frost typically in 187 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 · May 31 | Sep 7 · Sep 20 · Oct 1 | 123 days | 100% |
| Frost / freeze (32°F) | Apr 27 · May 9 · May 23 | Sep 17 · Sep 28 · Oct 11 | 141 days | 100% |
| Hard freeze (28°F) | Apr 15 · Apr 30 · May 13 | Sep 24 · Oct 5 · Oct 19 | 158 days | 100% |
Planting calendar for Fullerton
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 8 – Jun 14 |
| Tomatoes | Transplant outdoors | May 25 – Jun 8 |
| Peppers | Start seeds indoors | Apr 8 – May 9 |
| Peppers | Transplant outdoors | Jun 8 – Jul 9 |
| Eggplant | Start seeds indoors | Apr 25 – May 24 |
| Eggplant | Transplant outdoors | Jun 8 – Jul 9 |
| Cucumbers | Sow outdoors | Jun 8 – Jun 18 |
| Summer squash | Sow outdoors | May 25 – Jul 9 |
| Winter squash & pumpkins | Sow outdoors | Jun 8 – Jul 9 |
| Snap beans | Sow outdoors | May 25 – Jul 11 |
| Sweet corn | Sow outdoors | May 25 – Jun 8 |
| Watermelon & cantaloupe | Sow outdoors | Jun 8 – Jul 9 |
| Okra | Sow outdoors | Jun 1 – Jun 24 |
| Peas | Sow outdoors (spring) | Apr 8 – May 24 |
| Potatoes | Plant outdoors (spring) | Apr 8 – Jun 8 |
| Onions | Start seeds indoors (spring) | Feb 25 – Mar 24 |
| Onions | Transplant outdoors (spring) | Apr 25 – May 24 |
| Broccoli | Start seeds indoors (spring) | Mar 21 – Apr 24 |
| Broccoli | Transplant outdoors (spring) | Apr 25 – May 24 |
| Broccoli | Start seeds indoors (fall) | May 29 – Jun 8 |
| Broccoli | Transplant outdoors (fall) | Jun 28 – Jul 9 |
| Cabbage | Start seeds indoors (spring) | Mar 11 – Apr 8 |
| Cabbage | Transplant outdoors (spring) | Apr 8 – May 9 |
| Cabbage | Start seeds indoors (fall) | May 19 – Jun 18 |
| Cabbage | Transplant outdoors (fall) | Jun 18 – Jul 19 |
| Leaf lettuce | Sow outdoors (spring) | Apr 8 – Jun 24 |
| Leaf lettuce | Sow outdoors (fall) | Jun 18 – Aug 4 |
| Spinach | Sow outdoors (spring) | Apr 1 – May 15 |
| Spinach | Sow outdoors (fall) | Jul 5 – Aug 9 |
| Radishes | Sow outdoors (spring) | Apr 8 – May 29 |
| Radishes | Sow outdoors (fall) | Jun 18 – Aug 19 |
| Kale | Sow outdoors (spring) | Apr 25 – May 15 |
| Kale | Sow outdoors (fall) | Jun 11 – Jul 19 |
| Carrots | Sow outdoors (spring) | May 9 – Jun 24 |
| Carrots | Sow outdoors (fall) | May 19 – Jul 4 |
| Garlic | Plant outdoors (fall) | Sep 18 – Oct 19 |
Where these dates come from
ZIP code 58441 is matched to the NOAA station Fullerton 1 Ese, ND, 4.2 km away, at 1,435 ft elevation (14 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Fullerton 1 Ese, ND (used) | 1,435 ft | May 9 | Sep 28 |
| La Moure, ND | 1,334 ft | May 10 | Sep 28 |
| Ellendale, ND | 1,455 ft | May 4 | Oct 2 |
| Oakes, ND | 1,324 ft | May 8 | Sep 28 |
Frost dates near Fullerton
- Oakes, ND 58474 · last May 8, first Sep 28
- Lamoure, ND 58458 · last May 10, first Sep 28
- Berlin, ND 58415 · last May 10, first Sep 28
- Ellendale, ND 58436 · last May 4, first Oct 2
- Verona, ND 58490 · last May 10, first Sep 28
- Edgeley, ND 58433 · last May 7, first Oct 2
- Forbes, ND 58439 · last May 4, first Oct 2
- Hecla, SD 57446 · last May 7, first Sep 29
Frequently asked questions
- When is the last frost in Fullerton, ND?
- For ZIP code 58441, the average last spring frost (32°F) is May 9, based on NOAA 1991-2020 climate normals for the Fullerton 1 Ese, ND weather station. There is a 1-in-10 chance of a frost after May 23.
- When is the first frost in Fullerton, ND?
- The average first fall frost (32°F) is September 28. There is a 1-in-10 chance of frost by September 17, so tender plants are at risk from that point on.
- How long is the growing season in 58441?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 141 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.