Frost dates for 54202Baileys Harbor, WI
The average last spring frost in Baileys Harbor is May 8 and the average first fall frost is October 13, giving a typical growing season of about 157 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 8
- Average first fall frost
- Oct 13
- Growing season
- 157 days
Safer after May 21 (1-in-10 risk)
Possible by Sep 28 (1-in-10 risk)
Last frost typically in 193 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 7 · May 21 · Jun 3 | Sep 17 · Oct 2 · Oct 15 | 134 days | 100% |
| Frost / freeze (32°F) | Apr 25 · May 8 · May 21 | Sep 28 · Oct 13 · Oct 30 | 157 days | 100% |
| Hard freeze (28°F) | Apr 11 · Apr 26 · May 9 | Oct 12 · Oct 28 · Nov 11 | 183 days | 100% |
Planting calendar for Baileys Harbor
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 23 |
| 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 – Jul 3 |
| Summer squash | Sow outdoors | May 24 – Jul 8 |
| Winter squash & pumpkins | Sow outdoors | Jun 7 – Jul 8 |
| Snap beans | Sow outdoors | May 24 – Jul 26 |
| Sweet corn | Sow outdoors | May 24 – Jun 23 |
| 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) | Jun 13 – Jun 23 |
| Broccoli | Transplant outdoors (fall) | Jul 13 – Jul 24 |
| Cabbage | Start seeds indoors (spring) | Mar 10 – Apr 7 |
| Cabbage | Transplant outdoors (spring) | Apr 7 – May 8 |
| Cabbage | Start seeds indoors (fall) | Jun 3 – Jul 3 |
| Cabbage | Transplant outdoors (fall) | Jul 3 – Aug 3 |
| Leaf lettuce | Sow outdoors (spring) | Apr 7 – Jun 23 |
| Leaf lettuce | Sow outdoors (fall) | Jul 3 – Aug 19 |
| Spinach | Sow outdoors (spring) | Mar 31 – May 14 |
| Spinach | Sow outdoors (fall) | Jul 20 – Aug 24 |
| Radishes | Sow outdoors (spring) | Apr 7 – May 28 |
| Radishes | Sow outdoors (fall) | Jul 3 – Sep 3 |
| Kale | Sow outdoors (spring) | Apr 24 – May 14 |
| Kale | Sow outdoors (fall) | Jun 26 – Aug 3 |
| Carrots | Sow outdoors (spring) | May 8 – Jun 23 |
| Carrots | Sow outdoors (fall) | Jun 3 – Jul 19 |
| Garlic | Plant outdoors (fall) | Oct 3 – Nov 3 |
Where these dates come from
ZIP code 54202 is matched to the NOAA station Sturgeon Bay Exp Farm, WI, 23.7 km away, at 699 ft elevation (56 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Sturgeon Bay Exp Farm, WI (used) | 699 ft | May 8 | Oct 13 |
| Ephraim 1Ne-Wwtp, WI | 733 ft | May 14 | Oct 18 |
| Marinette, WI | 589 ft | May 4 | Oct 11 |
| Washington Is, WI | 686 ft | May 15 | Oct 14 |
Frost dates near Baileys Harbor
- Fish Creek, WI 54212 · last May 14, first Oct 18
- Egg Harbor, WI 54209 · last May 8, first Oct 13
- Ephraim, WI 54211 · last May 14, first Oct 18
- Sister Bay, WI 54234 · last May 14, first Oct 18
- Ellison Bay, WI 54210 · last May 15, first Oct 14
- Sturgeon Bay, WI 54235 · last May 8, first Oct 13
- Menominee, MI 49858 · last May 4, first Oct 11
- Marinette, WI 54143 · last May 4, first Oct 11
Frequently asked questions
- When is the last frost in Baileys Harbor, WI?
- For ZIP code 54202, the average last spring frost (32°F) is May 8, based on NOAA 1991-2020 climate normals for the Sturgeon Bay Exp Farm, WI weather station. There is a 1-in-10 chance of a frost after May 21.
- When is the first frost in Baileys Harbor, WI?
- The average first fall frost (32°F) is October 13. There is a 1-in-10 chance of frost by September 28, so tender plants are at risk from that point on.
- How long is the growing season in 54202?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 157 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.