Frost dates for 53587South Wayne, WI
The average last spring frost in South Wayne is May 3 and the average first fall frost is October 4, giving a typical growing season of about 153 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 3
- Average first fall frost
- Oct 4
- Growing season
- 153 days
Safer after May 19 (1-in-10 risk)
Possible by Sep 20 (1-in-10 risk)
Last frost typically in 184 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 14 · May 28 | Sep 13 · Sep 25 · Oct 7 | 134 days | 100% |
| Frost / freeze (32°F) | Apr 19 · May 3 · May 19 | Sep 20 · Oct 4 · Oct 19 | 153 days | 100% |
| Hard freeze (28°F) | Apr 9 · Apr 23 · May 9 | Sep 29 · Oct 16 · Oct 29 | 175 days | 100% |
Planting calendar for South Wayne
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 2 – Jun 8 |
| Tomatoes | Transplant outdoors | May 19 – Jun 14 |
| Peppers | Start seeds indoors | Apr 2 – May 3 |
| Peppers | Transplant outdoors | Jun 2 – Jul 3 |
| Eggplant | Start seeds indoors | Apr 19 – May 18 |
| Eggplant | Transplant outdoors | Jun 2 – Jul 3 |
| Cucumbers | Sow outdoors | Jun 2 – Jun 24 |
| Summer squash | Sow outdoors | May 19 – Jul 3 |
| Winter squash & pumpkins | Sow outdoors | Jun 2 – Jul 3 |
| Snap beans | Sow outdoors | May 19 – Jul 17 |
| Sweet corn | Sow outdoors | May 19 – Jun 14 |
| Watermelon & cantaloupe | Sow outdoors | Jun 2 – Jul 3 |
| Okra | Sow outdoors | May 26 – Jun 18 |
| Peas | Sow outdoors (spring) | Apr 2 – May 18 |
| Potatoes | Plant outdoors (spring) | Apr 2 – Jun 2 |
| Onions | Start seeds indoors (spring) | Feb 19 – Mar 18 |
| Onions | Transplant outdoors (spring) | Apr 19 – May 18 |
| Broccoli | Start seeds indoors (spring) | Mar 15 – Apr 18 |
| Broccoli | Transplant outdoors (spring) | Apr 19 – May 18 |
| Broccoli | Start seeds indoors (fall) | Jun 4 – Jun 14 |
| Broccoli | Transplant outdoors (fall) | Jul 4 – Jul 15 |
| Cabbage | Start seeds indoors (spring) | Mar 5 – Apr 2 |
| Cabbage | Transplant outdoors (spring) | Apr 2 – May 3 |
| Cabbage | Start seeds indoors (fall) | May 25 – Jun 24 |
| Cabbage | Transplant outdoors (fall) | Jun 24 – Jul 25 |
| Leaf lettuce | Sow outdoors (spring) | Apr 2 – Jun 18 |
| Leaf lettuce | Sow outdoors (fall) | Jun 24 – Aug 10 |
| Spinach | Sow outdoors (spring) | Mar 26 – May 9 |
| Spinach | Sow outdoors (fall) | Jul 11 – Aug 15 |
| Radishes | Sow outdoors (spring) | Apr 2 – May 23 |
| Radishes | Sow outdoors (fall) | Jun 24 – Aug 25 |
| Kale | Sow outdoors (spring) | Apr 19 – May 9 |
| Kale | Sow outdoors (fall) | Jun 17 – Jul 25 |
| Carrots | Sow outdoors (spring) | May 3 – Jun 18 |
| Carrots | Sow outdoors (fall) | May 25 – Jul 10 |
| Garlic | Plant outdoors (fall) | Sep 24 – Oct 25 |
Where these dates come from
ZIP code 53587 is matched to the NOAA station Darlington Wwtp, WI, 20.8 km away, at 854 ft elevation (50 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Darlington Wwtp, WI (used) | 854 ft | May 3 | Oct 4 |
| Monroe Wwtp, WI | 991 ft | Apr 27 | Oct 14 |
| Stockton 3 Nne, IL | 970 ft | Apr 27 | Oct 9 |
| Freeport Waste Wtp, IL | 750 ft | Apr 26 | Oct 13 |
Frost dates near South Wayne
- Woodford, WI 53599 · last May 3, first Oct 4
- Browntown, WI 53522 · last Apr 27, first Oct 14
- Gratiot, WI 53541 · last May 3, first Oct 4
- Argyle, WI 53504 · last May 3, first Oct 4
- Winslow, IL 61089 · last Apr 27, first Oct 9
- Warren, IL 61087 · last Apr 27, first Oct 9
- Nora, IL 61059 · last Apr 27, first Oct 9
- Mc Connell, IL 61050 · last Apr 26, first Oct 13
Frequently asked questions
- When is the last frost in South Wayne, WI?
- For ZIP code 53587, the average last spring frost (32°F) is May 3, based on NOAA 1991-2020 climate normals for the Darlington Wwtp, WI weather station. There is a 1-in-10 chance of a frost after May 19.
- When is the first frost in South Wayne, WI?
- The average first fall frost (32°F) is October 4. There is a 1-in-10 chance of frost by September 20, so tender plants are at risk from that point on.
- How long is the growing season in 53587?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 153 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.