Frost dates for 53951North Freedom, WI
The average last spring frost in North Freedom is April 24 and the average first fall frost is October 20, giving a typical growing season of about 178 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 24
- Average first fall frost
- Oct 20
- Growing season
- 178 days
Safer after May 7 (1-in-10 risk)
Possible by Oct 1 (1-in-10 risk)
Last frost typically in 173 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 22 · May 4 · May 18 | Sep 23 · Oct 8 · Oct 24 | 154 days | 100% |
| Frost / freeze (32°F) | Apr 10 · Apr 24 · May 7 | Oct 1 · Oct 20 · Nov 1 | 178 days | 100% |
| Hard freeze (28°F) | Apr 1 · Apr 13 · Apr 27 | Oct 17 · Oct 31 · Nov 12 | 201 days | 100% |
Planting calendar for North Freedom
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 24 – May 30 |
| Tomatoes | Transplant outdoors | May 10 – Jun 30 |
| Peppers | Start seeds indoors | Mar 24 – Apr 24 |
| Peppers | Transplant outdoors | May 24 – Jun 24 |
| Eggplant | Start seeds indoors | Apr 10 – May 9 |
| Eggplant | Transplant outdoors | May 24 – Jun 24 |
| Cucumbers | Sow outdoors | May 24 – Jul 10 |
| Summer squash | Sow outdoors | May 10 – Jun 24 |
| Winter squash & pumpkins | Sow outdoors | May 24 – Jun 24 |
| Snap beans | Sow outdoors | May 10 – Aug 2 |
| Sweet corn | Sow outdoors | May 10 – Jun 30 |
| Watermelon & cantaloupe | Sow outdoors | May 24 – Jun 24 |
| Okra | Sow outdoors | May 17 – Jun 9 |
| Peas | Sow outdoors (spring) | Mar 24 – May 9 |
| Potatoes | Plant outdoors (spring) | Mar 24 – May 24 |
| Onions | Start seeds indoors (spring) | Feb 10 – Mar 9 |
| Onions | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (spring) | Mar 6 – Apr 9 |
| Broccoli | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (fall) | Jun 20 – Jun 30 |
| Broccoli | Transplant outdoors (fall) | Jul 20 – Jul 31 |
| Cabbage | Start seeds indoors (spring) | Feb 24 – Mar 24 |
| Cabbage | Transplant outdoors (spring) | Mar 24 – Apr 24 |
| Cabbage | Start seeds indoors (fall) | Jun 10 – Jul 10 |
| Cabbage | Transplant outdoors (fall) | Jul 10 – Aug 10 |
| Leaf lettuce | Sow outdoors (spring) | Mar 24 – Jun 9 |
| Leaf lettuce | Sow outdoors (fall) | Jul 10 – Aug 26 |
| Spinach | Sow outdoors (spring) | Mar 17 – Apr 30 |
| Spinach | Sow outdoors (fall) | Jul 27 – Aug 31 |
| Radishes | Sow outdoors (spring) | Mar 24 – May 14 |
| Radishes | Sow outdoors (fall) | Jul 10 – Sep 10 |
| Kale | Sow outdoors (spring) | Apr 10 – Apr 30 |
| Kale | Sow outdoors (fall) | Jul 3 – Aug 10 |
| Carrots | Sow outdoors (spring) | Apr 24 – Jun 9 |
| Carrots | Sow outdoors (fall) | Jun 10 – Jul 26 |
| Garlic | Plant outdoors (fall) | Oct 10 – Nov 10 |
Where these dates come from
ZIP code 53951 is matched to the NOAA station Rock Springs 3 Sw, WI, 10.5 km away, at 1,260 ft elevation (7 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Rock Springs 3 Sw, WI (used) | 1,260 ft | Apr 24 | Oct 20 |
| Baraboo, WI | 823 ft | May 5 | Oct 5 |
| Reedsburg, WI | 926 ft | May 2 | Oct 7 |
| Sauk City Wwtp, WI | 750 ft | May 4 | Oct 6 |
Frost dates near North Freedom
- Rock Springs, WI 53961 · last May 2, first Oct 7
- Reedsburg, WI 53958 · last May 2, first Oct 7
- Baraboo, WI 53913 · last May 5, first Oct 5
- Loganville, WI 53943 · last May 2, first Oct 7
- Prairie Du Sac, WI 53578 · last May 7, first Oct 1
- Merrimac, WI 53561 · last May 1, first Oct 10
- Sauk City, WI 53583 · last May 7, first Oct 1
- Lake Delton, WI 53940 · last May 8, first Oct 3
Frequently asked questions
- When is the last frost in North Freedom, WI?
- For ZIP code 53951, the average last spring frost (32°F) is April 24, based on NOAA 1991-2020 climate normals for the Rock Springs 3 Sw, WI weather station. There is a 1-in-10 chance of a frost after May 7.
- When is the first frost in North Freedom, WI?
- The average first fall frost (32°F) is October 20. There is a 1-in-10 chance of frost by October 1, so tender plants are at risk from that point on.
- How long is the growing season in 53951?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 178 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.