Frost dates for 54854Maple, WI
The average last spring frost in Maple is May 24 and the average first fall frost is September 26, giving a typical growing season of about 124 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 24
- Average first fall frost
- Sep 26
- Growing season
- 124 days
Safer after Jun 6 (1-in-10 risk)
Possible by Sep 9 (1-in-10 risk)
Last frost typically in 202 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 22 · Jun 5 · Jun 21 | Aug 30 · Sep 14 · Sep 29 | 99 days | 100% |
| Frost / freeze (32°F) | May 8 · May 24 · Jun 6 | Sep 9 · Sep 26 · Oct 9 | 124 days | 100% |
| Hard freeze (28°F) | Apr 26 · May 9 · May 27 | Sep 20 · Oct 6 · Oct 24 | 149 days | 100% |
Planting calendar for Maple
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 23 – Jun 29 |
| Tomatoes | Transplant outdoors | Jun 9 – Jun 6 |
| Peppers | Start seeds indoors | Apr 23 – May 24 |
| Peppers | Transplant outdoors | Jun 23 – Jul 24 |
| Eggplant | Start seeds indoors | May 10 – Jun 8 |
| Eggplant | Transplant outdoors | Jun 23 – Jul 24 |
| Cucumbers | Sow outdoors | Jun 23 – Jun 16 |
| Summer squash | Sow outdoors | Jun 9 – Jul 24 |
| Winter squash & pumpkins | Sow outdoors | Jun 23 – Jul 24 |
| Snap beans | Sow outdoors | Jun 9 – Jul 9 |
| Sweet corn | Sow outdoors | Jun 9 – Jun 6 |
| Watermelon & cantaloupe | Sow outdoors | Jun 23 – Jul 24 |
| Okra | Sow outdoors | Jun 16 – Jul 9 |
| Peas | Sow outdoors (spring) | Apr 23 – Jun 8 |
| Potatoes | Plant outdoors (spring) | Apr 23 – Jun 23 |
| Onions | Start seeds indoors (spring) | Mar 12 – Apr 8 |
| Onions | Transplant outdoors (spring) | May 10 – Jun 8 |
| Broccoli | Start seeds indoors (spring) | Apr 5 – May 9 |
| Broccoli | Transplant outdoors (spring) | May 10 – Jun 8 |
| Broccoli | Start seeds indoors (fall) | May 27 – Jun 6 |
| Broccoli | Transplant outdoors (fall) | Jun 26 – Jul 7 |
| Cabbage | Start seeds indoors (spring) | Mar 26 – Apr 23 |
| Cabbage | Transplant outdoors (spring) | Apr 23 – May 24 |
| Cabbage | Start seeds indoors (fall) | May 17 – Jun 16 |
| Cabbage | Transplant outdoors (fall) | Jun 16 – Jul 17 |
| Leaf lettuce | Sow outdoors (spring) | Apr 23 – Jul 9 |
| Leaf lettuce | Sow outdoors (fall) | Jun 16 – Aug 2 |
| Spinach | Sow outdoors (spring) | Apr 16 – May 30 |
| Spinach | Sow outdoors (fall) | Jul 3 – Aug 7 |
| Radishes | Sow outdoors (spring) | Apr 23 – Jun 13 |
| Radishes | Sow outdoors (fall) | Jun 16 – Aug 17 |
| Kale | Sow outdoors (spring) | May 10 – May 30 |
| Kale | Sow outdoors (fall) | Jun 9 – Jul 17 |
| Carrots | Sow outdoors (spring) | May 24 – Jul 9 |
| Carrots | Sow outdoors (fall) | May 17 – Jul 2 |
| Garlic | Plant outdoors (fall) | Sep 16 – Oct 17 |
Where these dates come from
ZIP code 54854 is matched to the NOAA station Brule Rs, WI, 12.5 km away, at 1,000 ft elevation (85 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Brule Rs, WI (used) | 1,000 ft | May 24 | Sep 26 |
| Port Wing, WI | 651 ft | May 31 | Oct 2 |
| Superior, WI | 607 ft | May 6 | Oct 9 |
| Solon Springs, WI | 1,130 ft | May 12 | Oct 2 |
Frost dates near Maple
- Poplar, WI 54864 · last May 24, first Sep 26
- Brule, WI 54820 · last May 24, first Sep 26
- Lake Nebagamon, WI 54849 · last May 12, first Oct 2
- Hawthorne, WI 54842 · last May 12, first Oct 2
- South Range, WI 54874 · last May 18, first Oct 3
- Iron River, WI 54847 · last May 24, first Sep 26
- Solon Springs, WI 54873 · last May 12, first Oct 2
- Port Wing, WI 54865 · last May 31, first Oct 2
Frequently asked questions
- When is the last frost in Maple, WI?
- For ZIP code 54854, the average last spring frost (32°F) is May 24, based on NOAA 1991-2020 climate normals for the Brule Rs, WI weather station. There is a 1-in-10 chance of a frost after June 6.
- When is the first frost in Maple, WI?
- The average first fall frost (32°F) is September 26. There is a 1-in-10 chance of frost by September 9, so tender plants are at risk from that point on.
- How long is the growing season in 54854?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 124 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.