Frost dates for 53060Newburg, WI
The average last spring frost in Newburg is May 4 and the average first fall frost is October 11, giving a typical growing season of about 157 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 4
- Average first fall frost
- Oct 11
- Growing season
- 157 days
Safer after May 21 (1-in-10 risk)
Possible by Sep 26 (1-in-10 risk)
Last frost typically in 189 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 30 · May 18 · Jun 2 | Sep 18 · Oct 2 · Oct 13 | 135 days | 100% |
| Frost / freeze (32°F) | Apr 20 · May 4 · May 21 | Sep 26 · Oct 11 · Oct 25 | 157 days | 100% |
| Hard freeze (28°F) | Apr 7 · Apr 22 · May 9 | Oct 6 · Oct 24 · Nov 5 | 182 days | 100% |
Planting calendar for Newburg
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 3 – Jun 9 |
| Tomatoes | Transplant outdoors | May 20 – Jun 21 |
| Peppers | Start seeds indoors | Apr 3 – May 4 |
| Peppers | Transplant outdoors | Jun 3 – Jul 4 |
| Eggplant | Start seeds indoors | Apr 20 – May 19 |
| Eggplant | Transplant outdoors | Jun 3 – Jul 4 |
| Cucumbers | Sow outdoors | Jun 3 – Jul 1 |
| Summer squash | Sow outdoors | May 20 – Jul 4 |
| Winter squash & pumpkins | Sow outdoors | Jun 3 – Jul 4 |
| Snap beans | Sow outdoors | May 20 – Jul 24 |
| Sweet corn | Sow outdoors | May 20 – Jun 21 |
| Watermelon & cantaloupe | Sow outdoors | Jun 3 – Jul 4 |
| Okra | Sow outdoors | May 27 – Jun 19 |
| Peas | Sow outdoors (spring) | Apr 3 – May 19 |
| Potatoes | Plant outdoors (spring) | Apr 3 – Jun 3 |
| Onions | Start seeds indoors (spring) | Feb 20 – Mar 19 |
| Onions | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (spring) | Mar 16 – Apr 19 |
| Broccoli | Transplant outdoors (spring) | Apr 20 – May 19 |
| Broccoli | Start seeds indoors (fall) | Jun 11 – Jun 21 |
| Broccoli | Transplant outdoors (fall) | Jul 11 – Jul 22 |
| Cabbage | Start seeds indoors (spring) | Mar 6 – Apr 3 |
| Cabbage | Transplant outdoors (spring) | Apr 3 – May 4 |
| Cabbage | Start seeds indoors (fall) | Jun 1 – Jul 1 |
| Cabbage | Transplant outdoors (fall) | Jul 1 – Aug 1 |
| Leaf lettuce | Sow outdoors (spring) | Apr 3 – Jun 19 |
| Leaf lettuce | Sow outdoors (fall) | Jul 1 – Aug 17 |
| Spinach | Sow outdoors (spring) | Mar 27 – May 10 |
| Spinach | Sow outdoors (fall) | Jul 18 – Aug 22 |
| Radishes | Sow outdoors (spring) | Apr 3 – May 24 |
| Radishes | Sow outdoors (fall) | Jul 1 – Sep 1 |
| Kale | Sow outdoors (spring) | Apr 20 – May 10 |
| Kale | Sow outdoors (fall) | Jun 24 – Aug 1 |
| Carrots | Sow outdoors (spring) | May 4 – Jun 19 |
| Carrots | Sow outdoors (fall) | Jun 1 – Jul 17 |
| Garlic | Plant outdoors (fall) | Oct 1 – Nov 1 |
Where these dates come from
ZIP code 53060 is matched to the NOAA station West Bend, WI, 7.5 km away, at 940 ft elevation (64 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| West Bend, WI (used) | 940 ft | May 4 | Oct 11 |
| W Bend Public Works, WI | 980 ft | May 1 | Oct 12 |
| Saukville Wwtp, WI | 766 ft | May 5 | Oct 11 |
| Jackson, WI | 903 ft | Apr 30 | Oct 15 |
Frost dates near Newburg
- Fredonia, WI 53021 · last May 3, first Oct 16
- Saukville, WI 53080 · last Apr 27, first Oct 22
- West Bend, WI 53095 · last May 1, first Oct 12
- Kewaskum, WI 53040 · last May 8, first Oct 3
- Jackson, WI 53037 · last May 6, first Oct 8
- Grafton, WI 53024 · last Apr 23, first Oct 24
- Cedarburg, WI 53012 · last May 6, first Oct 8
- Port Washington, WI 53074 · last Apr 27, first Oct 22
Frequently asked questions
- When is the last frost in Newburg, WI?
- For ZIP code 53060, the average last spring frost (32°F) is May 4, based on NOAA 1991-2020 climate normals for the West Bend, WI weather station. There is a 1-in-10 chance of a frost after May 21.
- When is the first frost in Newburg, WI?
- The average first fall frost (32°F) is October 11. There is a 1-in-10 chance of frost by September 26, so tender plants are at risk from that point on.
- How long is the growing season in 53060?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 157 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.