Frost dates for 53126Franksville, WI
The average last spring frost in Franksville is May 5 and the average first fall frost is October 8, giving a typical growing season of about 156 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 5
- Average first fall frost
- Oct 8
- Growing season
- 156 days
Safer after May 20 (1-in-10 risk)
Possible by Sep 27 (1-in-10 risk)
Last frost typically in 183 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 1 · May 17 · May 31 | Sep 18 · Sep 30 · Oct 12 | 136 days | 100% |
| Frost / freeze (32°F) | Apr 21 · May 5 · May 20 | Sep 27 · Oct 8 · Oct 23 | 156 days | 100% |
| Hard freeze (28°F) | Apr 9 · Apr 23 · May 10 | Oct 4 · Oct 20 · Nov 3 | 178 days | 100% |
Planting calendar for Franksville
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 4 – Jun 10 |
| Tomatoes | Transplant outdoors | May 21 – Jun 18 |
| Peppers | Start seeds indoors | Apr 4 – May 5 |
| Peppers | Transplant outdoors | Jun 4 – Jul 5 |
| Eggplant | Start seeds indoors | Apr 21 – May 20 |
| Eggplant | Transplant outdoors | Jun 4 – Jul 5 |
| Cucumbers | Sow outdoors | Jun 4 – Jun 28 |
| Summer squash | Sow outdoors | May 21 – Jul 5 |
| Winter squash & pumpkins | Sow outdoors | Jun 4 – Jul 5 |
| Snap beans | Sow outdoors | May 21 – Jul 21 |
| Sweet corn | Sow outdoors | May 21 – Jun 18 |
| Watermelon & cantaloupe | Sow outdoors | Jun 4 – Jul 5 |
| Okra | Sow outdoors | May 28 – Jun 20 |
| Peas | Sow outdoors (spring) | Apr 4 – May 20 |
| Potatoes | Plant outdoors (spring) | Apr 4 – Jun 4 |
| Onions | Start seeds indoors (spring) | Feb 21 – Mar 20 |
| Onions | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (spring) | Mar 17 – Apr 20 |
| Broccoli | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (fall) | Jun 8 – Jun 18 |
| Broccoli | Transplant outdoors (fall) | Jul 8 – Jul 19 |
| Cabbage | Start seeds indoors (spring) | Mar 7 – Apr 4 |
| Cabbage | Transplant outdoors (spring) | Apr 4 – May 5 |
| Cabbage | Start seeds indoors (fall) | May 29 – Jun 28 |
| Cabbage | Transplant outdoors (fall) | Jun 28 – Jul 29 |
| Leaf lettuce | Sow outdoors (spring) | Apr 4 – Jun 20 |
| Leaf lettuce | Sow outdoors (fall) | Jun 28 – Aug 14 |
| Spinach | Sow outdoors (spring) | Mar 28 – May 11 |
| Spinach | Sow outdoors (fall) | Jul 15 – Aug 19 |
| Radishes | Sow outdoors (spring) | Apr 4 – May 25 |
| Radishes | Sow outdoors (fall) | Jun 28 – Aug 29 |
| Kale | Sow outdoors (spring) | Apr 21 – May 11 |
| Kale | Sow outdoors (fall) | Jun 21 – Jul 29 |
| Carrots | Sow outdoors (spring) | May 5 – Jun 20 |
| Carrots | Sow outdoors (fall) | May 29 – Jul 14 |
| Garlic | Plant outdoors (fall) | Sep 28 – Oct 29 |
Where these dates come from
ZIP code 53126 is matched to the NOAA station Union Grove, WI, 11.3 km away, at 730 ft elevation (34 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Union Grove, WI (used) | 730 ft | May 5 | Oct 8 |
| Racine Batten Ap, WI | 674 ft | Apr 24 | Oct 24 |
| South Milwaukee Wwtp, WI | 650 ft | Apr 22 | Oct 26 |
| Hales Corners/Whitnall Park/Bo, WI | 774 ft | May 3 | Oct 14 |
Frost dates near Franksville
- Caledonia, WI 53108 · last Apr 24, first Oct 24
- Union Grove, WI 53182 · last May 5, first Oct 8
- Sturtevant, WI 53177 · last May 5, first Oct 8
- Racine, WI 53406 · last Apr 24, first Oct 24
- Franklin, WI 53132 · last Apr 19, first Oct 29
- Oak Creek, WI 53154 · last Apr 19, first Oct 29
- Kansasville, WI 53139 · last May 5, first Oct 8
- Greendale, WI 53129 · last Apr 19, first Oct 29
Frequently asked questions
- When is the last frost in Franksville, WI?
- For ZIP code 53126, the average last spring frost (32°F) is May 5, based on NOAA 1991-2020 climate normals for the Union Grove, WI weather station. There is a 1-in-10 chance of a frost after May 20.
- When is the first frost in Franksville, WI?
- The average first fall frost (32°F) is October 8. There is a 1-in-10 chance of frost by September 27, so tender plants are at risk from that point on.
- How long is the growing season in 53126?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 156 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.