Frost dates for Laona 6 SW, WI
At Laona 6 SW, the median last spring frost (32°F) is May 19 and the median first fall frost is Sep 29, for a typical growing season of 131 days. For a 90% chance that the last frost has passed, wait until Jun 2. Nearby ZIP codes are in USDA hardiness zone 4b.
- May 19Last spring frost (median)50% chance of 32°F after this date
- Jun 2Safer planting date10% chance of 32°F after this date
- Sep 29First fall frost (median)50% chance of 32°F by this date
- 131 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | May 18 | May 31 | Jun 15 |
| 32°F | May 5 | May 19 | Jun 2 |
| 28°F | Apr 23 | May 6 | May 20 |
| 24°F | Apr 11 | Apr 26 | May 10 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Sep 3 | Sep 19 | Oct 1 |
| 32°F | Sep 15 | Sep 29 | Oct 13 |
| 28°F | Sep 24 | Oct 9 | Oct 25 |
| 24°F | Oct 5 | Oct 25 | Nov 8 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 85 days | 108 days | 128 days |
| 32°F | 111 days | 131 days | 151 days |
| 28°F | 134 days | 155 days | 175 days |
| 24°F | 157 days | 179 days | 201 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 54541 | 4b | -25 to -20°F | 9 km |
| 54566 | 4b | -25 to -20°F | 14 km |
| 54520 | 4b | -25 to -20°F | 14 km |
| 54465 | 4b | -25 to -20°F | 16 km |
| 54462 | 4b | -25 to -20°F | 23 km |
| 54511 | 4b | -25 to -20°F | 26 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00474582, at 45.5119, -88.7594, elevation 517 m (1,695 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 186.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lakewood 3 NE (28 km)
- Goodman Sanitary Dist (33 km)
- North Pelican (40 km)
- Rhinelander 4ne (45 km)
- Crivitz High Falls (47 km)
- Antigo (48 km)
- Rhinelander (55 km)
- Rhinelander Oneida Airport (57 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.