Frost dates for 54458Nelsonville, WI
The average last spring frost in Nelsonville is May 4 and the average first fall frost is October 7, giving a typical growing season of about 155 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 4
- Average first fall frost
- Oct 7
- Growing season
- 155 days
Safer after May 20 (1-in-10 risk)
Possible by Sep 24 (1-in-10 risk)
Last frost typically in 189 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) | Apr 30 · May 15 · May 29 | Sep 16 · Sep 28 · Oct 11 | 137 days | 100% |
| Frost / freeze (32°F) | Apr 22 · May 4 · May 20 | Sep 24 · Oct 7 · Oct 22 | 155 days | 100% |
| Hard freeze (28°F) | Apr 10 · Apr 25 · May 11 | Oct 2 · Oct 19 · Nov 2 | 177 days | 100% |
Planting calendar for Nelsonville
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 3 – Jun 9 |
| Tomatoes | Transplant outdoors | May 20 – Jun 17 |
| Peppers | Start seeds indoors | Apr 3 – May 4 |
| Peppers | Transplant outdoors | Jun 3 – Jul 4 |
| Eggplant | Start seeds indoors | Apr 20 – May 19 |
| Eggplant | Transplant outdoors | Jun 3 – Jul 4 |
| Cucumbers | Sow outdoors | Jun 3 – Jun 27 |
| Summer squash | Sow outdoors | May 20 – Jul 4 |
| Winter squash & pumpkins | Sow outdoors | Jun 3 – Jul 4 |
| Snap beans | Sow outdoors | May 20 – Jul 20 |
| Sweet corn | Sow outdoors | May 20 – Jun 17 |
| Watermelon & cantaloupe | Sow outdoors | Jun 3 – Jul 4 |
| Okra | Sow outdoors | May 27 – Jun 19 |
| Peas | Sow outdoors (spring) | Apr 3 – May 19 |
| Potatoes | Plant outdoors (spring) | Apr 3 – Jun 3 |
| Onions | Start seeds indoors (spring) | Feb 20 – Mar 19 |
| Onions | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (spring) | Mar 16 – Apr 19 |
| Broccoli | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (fall) | Jun 7 – Jun 17 |
| Broccoli | Transplant outdoors (fall) | Jul 7 – Jul 18 |
| Cabbage | Start seeds indoors (spring) | Mar 6 – Apr 3 |
| Cabbage | Transplant outdoors (spring) | Apr 3 – May 4 |
| Cabbage | Start seeds indoors (fall) | May 28 – Jun 27 |
| Cabbage | Transplant outdoors (fall) | Jun 27 – Jul 28 |
| Leaf lettuce | Sow outdoors (spring) | Apr 3 – Jun 19 |
| Leaf lettuce | Sow outdoors (fall) | Jun 27 – Aug 13 |
| Spinach | Sow outdoors (spring) | Mar 27 – May 10 |
| Spinach | Sow outdoors (fall) | Jul 14 – Aug 18 |
| Radishes | Sow outdoors (spring) | Apr 3 – May 24 |
| Radishes | Sow outdoors (fall) | Jun 27 – Aug 28 |
| Kale | Sow outdoors (spring) | Apr 20 – May 10 |
| Kale | Sow outdoors (fall) | Jun 20 – Jul 28 |
| Carrots | Sow outdoors (spring) | May 4 – Jun 19 |
| Carrots | Sow outdoors (fall) | May 28 – Jul 13 |
| Garlic | Plant outdoors (fall) | Sep 27 – Oct 28 |
Where these dates come from
ZIP code 54458 is matched to the NOAA station Stevens Pt, WI, 21.9 km away, at 1,079 ft elevation (3 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Stevens Pt, WI (used) | 1,079 ft | May 4 | Oct 7 |
| Waupaca, WI | 837 ft | May 8 | Oct 6 |
| Rosholt 9 Nne, WI | 1,183 ft | May 6 | Oct 5 |
| Wisconsin Rapids, WI | 1,033 ft | May 9 | Sep 30 |
Frost dates near Nelsonville
- Amherst Junction, WI 54407 · last May 4, first Oct 7
- Amherst, WI 54406 · last May 4, first Oct 7
- Custer, WI 54423 · last May 4, first Oct 7
- Scandinavia, WI 54977 · last May 8, first Oct 6
- Iola, WI 54990 · last May 8, first Oct 6
- Stevens Point, WI 54492 · last May 4, first Oct 7
- Rosholt, WI 54473 · last May 6, first Oct 5
- Plover, WI 54467 · last May 4, first Oct 7
Frequently asked questions
- When is the last frost in Nelsonville, WI?
- For ZIP code 54458, the average last spring frost (32°F) is May 4, based on NOAA 1991-2020 climate normals for the Stevens Pt, WI weather station. There is a 1-in-10 chance of a frost after May 20.
- When is the first frost in Nelsonville, WI?
- The average first fall frost (32°F) is October 7. There is a 1-in-10 chance of frost by September 24, so tender plants are at risk from that point on.
- How long is the growing season in 54458?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 155 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.