Frost dates for 53014Chilton, WI
The average last spring frost in Chilton is May 1 and the average first fall frost is October 14, giving a typical growing season of about 162 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 1
- Average first fall frost
- Oct 14
- Growing season
- 162 days
Safer after May 17 (1-in-10 risk)
Possible by Sep 29 (1-in-10 risk)
Last frost typically in 181 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 14 · May 28 | Sep 20 · Oct 2 · Oct 15 | 139 days | 100% |
| Frost / freeze (32°F) | Apr 19 · May 1 · May 17 | Sep 29 · Oct 14 · Oct 30 | 162 days | 100% |
| Hard freeze (28°F) | Apr 6 · Apr 22 · May 6 | Oct 11 · Oct 27 · Nov 8 | 187 days | 100% |
Planting calendar for Chilton
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 24 |
| 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 4 |
| Summer squash | Sow outdoors | May 17 – Jul 1 |
| Winter squash & pumpkins | Sow outdoors | May 31 – Jul 1 |
| Snap beans | Sow outdoors | May 17 – Jul 27 |
| Sweet corn | Sow outdoors | May 17 – Jun 24 |
| 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 14 – Jun 24 |
| Broccoli | Transplant outdoors (fall) | Jul 14 – Jul 25 |
| Cabbage | Start seeds indoors (spring) | Mar 3 – Mar 31 |
| Cabbage | Transplant outdoors (spring) | Mar 31 – May 1 |
| Cabbage | Start seeds indoors (fall) | Jun 4 – Jul 4 |
| Cabbage | Transplant outdoors (fall) | Jul 4 – Aug 4 |
| Leaf lettuce | Sow outdoors (spring) | Mar 31 – Jun 16 |
| Leaf lettuce | Sow outdoors (fall) | Jul 4 – Aug 20 |
| Spinach | Sow outdoors (spring) | Mar 24 – May 7 |
| Spinach | Sow outdoors (fall) | Jul 21 – Aug 25 |
| Radishes | Sow outdoors (spring) | Mar 31 – May 21 |
| Radishes | Sow outdoors (fall) | Jul 4 – Sep 4 |
| Kale | Sow outdoors (spring) | Apr 17 – May 7 |
| Kale | Sow outdoors (fall) | Jun 27 – Aug 4 |
| Carrots | Sow outdoors (spring) | May 1 – Jun 16 |
| Carrots | Sow outdoors (fall) | Jun 4 – Jul 20 |
| Garlic | Plant outdoors (fall) | Oct 4 – Nov 4 |
Where these dates come from
ZIP code 53014 is matched to the NOAA station Chilton, WI, 3 km away, at 840 ft elevation (59 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Chilton, WI (used) | 840 ft | May 1 | Oct 14 |
| Brillion, WI | 810 ft | May 6 | Oct 6 |
| Oshkosh, WI | 750 ft | Apr 24 | Oct 20 |
| Oshkosh Wittman Ap, WI | 782 ft | Apr 30 | Oct 13 |
Frost dates near Chilton
- New Holstein, WI 53062 · last May 1, first Oct 14
- Stockbridge, WI 53088 · last May 1, first Oct 14
- Hilbert, WI 54129 · last May 1, first Oct 14
- Potter, WI 54160 · last May 6, first Oct 6
- Collins, WI 54207 · last May 6, first Oct 6
- Kiel, WI 53042 · last May 1, first Oct 14
- Malone, WI 53049 · last May 1, first Oct 12
- Sherwood, WI 54169 · last May 6, first Oct 6
Frequently asked questions
- When is the last frost in Chilton, WI?
- For ZIP code 53014, the average last spring frost (32°F) is May 1, based on NOAA 1991-2020 climate normals for the Chilton, WI weather station. There is a 1-in-10 chance of a frost after May 17.
- When is the first frost in Chilton, WI?
- The average first fall frost (32°F) is October 14. There is a 1-in-10 chance of frost by September 29, so tender plants are at risk from that point on.
- How long is the growing season in 53014?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 162 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.