Frost dates for 54519Conover, WI
The average last spring frost in Conover is May 25 and the average first fall frost is September 24, giving a typical growing season of about 121 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 25
- Average first fall frost
- Sep 24
- Growing season
- 121 days
Safer after Jun 6 (1-in-10 risk)
Possible by Sep 8 (1-in-10 risk)
Last frost typically in 210 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 23 · Jun 4 · Jun 20 | Aug 26 · Sep 12 · Sep 27 | 97 days | 100% |
| Frost / freeze (32°F) | May 10 · May 25 · Jun 6 | Sep 8 · Sep 24 · Oct 7 | 121 days | 100% |
| Hard freeze (28°F) | Apr 30 · May 13 · May 26 | Sep 20 · Oct 5 · Oct 20 | 144 days | 100% |
Planting calendar for Conover
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 24 – Jun 30 |
| Tomatoes | Transplant outdoors | Jun 10 – Jun 4 |
| Peppers | Start seeds indoors | Apr 24 – May 25 |
| Peppers | Transplant outdoors | Jun 24 – Jul 25 |
| Eggplant | Start seeds indoors | May 11 – Jun 9 |
| Eggplant | Transplant outdoors | Jun 24 – Jul 25 |
| Cucumbers | Sow outdoors | Jun 24 – Jun 14 |
| Summer squash | Sow outdoors | Jun 10 – Jul 25 |
| Winter squash & pumpkins | Sow outdoors | Jun 24 – Jul 25 |
| Snap beans | Sow outdoors | Jun 10 – Jul 7 |
| Sweet corn | Sow outdoors | Jun 10 – Jun 4 |
| Watermelon & cantaloupe | Sow outdoors | Jun 24 – Jul 25 |
| Okra | Sow outdoors | Jun 17 – Jul 10 |
| Peas | Sow outdoors (spring) | Apr 24 – Jun 9 |
| Potatoes | Plant outdoors (spring) | Apr 24 – Jun 24 |
| Onions | Start seeds indoors (spring) | Mar 13 – Apr 9 |
| Onions | Transplant outdoors (spring) | May 11 – Jun 9 |
| Broccoli | Start seeds indoors (spring) | Apr 6 – May 10 |
| Broccoli | Transplant outdoors (spring) | May 11 – Jun 9 |
| Broccoli | Start seeds indoors (fall) | May 25 – Jun 4 |
| Broccoli | Transplant outdoors (fall) | Jun 24 – Jul 5 |
| Cabbage | Start seeds indoors (spring) | Mar 27 – Apr 24 |
| Cabbage | Transplant outdoors (spring) | Apr 24 – May 25 |
| Cabbage | Start seeds indoors (fall) | May 15 – Jun 14 |
| Cabbage | Transplant outdoors (fall) | Jun 14 – Jul 15 |
| Leaf lettuce | Sow outdoors (spring) | Apr 24 – Jul 10 |
| Leaf lettuce | Sow outdoors (fall) | Jun 14 – Jul 31 |
| Spinach | Sow outdoors (spring) | Apr 17 – May 31 |
| Spinach | Sow outdoors (fall) | Jul 1 – Aug 5 |
| Radishes | Sow outdoors (spring) | Apr 24 – Jun 14 |
| Radishes | Sow outdoors (fall) | Jun 14 – Aug 15 |
| Kale | Sow outdoors (spring) | May 11 – May 31 |
| Kale | Sow outdoors (fall) | Jun 7 – Jul 15 |
| Carrots | Sow outdoors (spring) | May 25 – Jul 10 |
| Carrots | Sow outdoors (fall) | May 15 – Jun 30 |
| Garlic | Plant outdoors (fall) | Sep 14 – Oct 15 |
Where these dates come from
ZIP code 54519 is matched to the NOAA station Eagle Rvr, WI, 14.2 km away, at 1,623 ft elevation (63 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Eagle Rvr, WI (used) | 1,623 ft | May 25 | Sep 24 |
| St Germain, WI | 1,643 ft | May 19 | Oct 3 |
| Paulding, MI | 1,367 ft | May 31 | Sep 19 |
| Minocqua, WI | 1,601 ft | May 23 | Sep 27 |
Frost dates near Conover
- Phelps, WI 54554 · last May 25, first Sep 24
- Land O Lakes, WI 54540 · last May 25, first Sep 24
- Eagle River, WI 54521 · last May 25, first Sep 24
- Star Lake, WI 54561 · last May 25, first Sep 24
- Sayner, WI 54560 · last May 23, first Sep 27
- Watersmeet, MI 49969 · last May 25, first Sep 24
- Saint Germain, WI 54558 · last May 19, first Oct 3
- Three Lakes, WI 54562 · last May 25, first Sep 24
Frequently asked questions
- When is the last frost in Conover, WI?
- For ZIP code 54519, the average last spring frost (32°F) is May 25, based on NOAA 1991-2020 climate normals for the Eagle Rvr, WI weather station. There is a 1-in-10 chance of a frost after June 6.
- When is the first frost in Conover, WI?
- The average first fall frost (32°F) is September 24. There is a 1-in-10 chance of frost by September 8, so tender plants are at risk from that point on.
- How long is the growing season in 54519?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 121 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.