Frost dates for 54240Tisch Mills, WI
The average last spring frost in Tisch Mills is May 1 and the average first fall frost is October 18, giving a typical growing season of about 168 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 1
- Average first fall frost
- Oct 18
- Growing season
- 168 days
Safer after May 17 (1-in-10 risk)
Possible by Oct 2 (1-in-10 risk)
Last frost typically in 186 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 29 · May 13 · May 27 | Sep 23 · Oct 6 · Oct 20 | 145 days | 100% |
| Frost / freeze (32°F) | Apr 16 · May 1 · May 17 | Oct 2 · Oct 18 · Nov 1 | 168 days | 100% |
| Hard freeze (28°F) | Apr 4 · Apr 18 · May 3 | Oct 15 · Oct 31 · Nov 12 | 195 days | 100% |
Planting calendar for Tisch Mills
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 | Mar 31 – Jun 6 |
| Tomatoes | Transplant outdoors | May 17 – Jun 28 |
| Peppers | Start seeds indoors | Mar 31 – May 1 |
| Peppers | Transplant outdoors | May 31 – Jul 1 |
| Eggplant | Start seeds indoors | Apr 17 – May 16 |
| Eggplant | Transplant outdoors | May 31 – Jul 1 |
| Cucumbers | Sow outdoors | May 31 – Jul 8 |
| Summer squash | Sow outdoors | May 17 – Jul 1 |
| Winter squash & pumpkins | Sow outdoors | May 31 – Jul 1 |
| Snap beans | Sow outdoors | May 17 – Jul 31 |
| Sweet corn | Sow outdoors | May 17 – Jun 28 |
| Watermelon & cantaloupe | Sow outdoors | May 31 – Jul 1 |
| Okra | Sow outdoors | May 24 – Jun 16 |
| Peas | Sow outdoors (spring) | Mar 31 – May 16 |
| Potatoes | Plant outdoors (spring) | Mar 31 – May 31 |
| Onions | Start seeds indoors (spring) | Feb 17 – Mar 16 |
| Onions | Transplant outdoors (spring) | Apr 17 – May 16 |
| Broccoli | Start seeds indoors (spring) | Mar 13 – Apr 16 |
| Broccoli | Transplant outdoors (spring) | Apr 17 – May 16 |
| Broccoli | Start seeds indoors (fall) | Jun 18 – Jun 28 |
| Broccoli | Transplant outdoors (fall) | Jul 18 – Jul 29 |
| Cabbage | Start seeds indoors (spring) | Mar 3 – Mar 31 |
| Cabbage | Transplant outdoors (spring) | Mar 31 – May 1 |
| Cabbage | Start seeds indoors (fall) | Jun 8 – Jul 8 |
| Cabbage | Transplant outdoors (fall) | Jul 8 – Aug 8 |
| Leaf lettuce | Sow outdoors (spring) | Mar 31 – Jun 16 |
| Leaf lettuce | Sow outdoors (fall) | Jul 8 – Aug 24 |
| Spinach | Sow outdoors (spring) | Mar 24 – May 7 |
| Spinach | Sow outdoors (fall) | Jul 25 – Aug 29 |
| Radishes | Sow outdoors (spring) | Mar 31 – May 21 |
| Radishes | Sow outdoors (fall) | Jul 8 – Sep 8 |
| Kale | Sow outdoors (spring) | Apr 17 – May 7 |
| Kale | Sow outdoors (fall) | Jul 1 – Aug 8 |
| Carrots | Sow outdoors (spring) | May 1 – Jun 16 |
| Carrots | Sow outdoors (fall) | Jun 8 – Jul 24 |
| Garlic | Plant outdoors (fall) | Oct 8 – Nov 8 |
Where these dates come from
ZIP code 54240 is matched to the NOAA station Kewaunee, WI, 17.8 km away, at 593 ft elevation (44 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Kewaunee, WI (used) | 593 ft | May 1 | Oct 18 |
| Denmark Wwtp, WI | 811 ft | May 6 | Oct 12 |
| Two Rivers, WI | 589 ft | Apr 27 | Oct 21 |
| Manitowoc, WI | 584 ft | Apr 30 | Oct 20 |
Frost dates near Tisch Mills
- Mishicot, WI 54228 · last Apr 27, first Oct 21
- Kewaunee, WI 54216 · last May 1, first Oct 18
- Maribel, WI 54227 · last May 6, first Oct 12
- Francis Creek, WI 54214 · last Apr 27, first Oct 21
- Denmark, WI 54208 · last May 6, first Oct 12
- Two Rivers, WI 54241 · last Apr 27, first Oct 21
- Kellnersville, WI 54215 · last May 6, first Oct 6
- Manitowoc, WI 54221 · last Apr 27, first Oct 21
Frequently asked questions
- When is the last frost in Tisch Mills, WI?
- For ZIP code 54240, the average last spring frost (32°F) is May 1, based on NOAA 1991-2020 climate normals for the Kewaunee, WI weather station. There is a 1-in-10 chance of a frost after May 17.
- When is the first frost in Tisch Mills, WI?
- The average first fall frost (32°F) is October 18. There is a 1-in-10 chance of frost by October 2, so tender plants are at risk from that point on.
- How long is the growing season in 54240?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 168 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.