Frost dates for Rest Lake, WI
At Rest Lake, the median last spring frost (32°F) is May 25 and the median first fall frost is Sep 21, for a typical growing season of 117 days. For a 90% chance that the last frost has passed, wait until Jun 9. Nearby ZIP codes are in USDA hardiness zone 4a.
- May 25Last spring frost (median)50% chance of 32°F after this date
- Jun 9Safer planting date10% chance of 32°F after this date
- Sep 21First fall frost (median)50% chance of 32°F by this date
- 117 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 |
|---|---|---|---|
| 32°F | May 8 | May 25 | Jun 9 |
| 28°F | Apr 27 | May 11 | May 28 |
| 24°F | Apr 16 | Apr 30 | May 17 |
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 |
|---|---|---|---|
| 32°F | Sep 3 | Sep 21 | Oct 6 |
| 28°F | Sep 14 | Oct 1 | Oct 15 |
| 24°F | Sep 25 | Oct 12 | Oct 29 |
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 | 58 days | 91 days | 116 days |
| 32°F | 92 days | 117 days | 141 days |
| 28°F | 117 days | 142 days | 163 days |
| 24°F | 140 days | 164 days | 188 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 |
|---|---|---|---|
| 54545 | 4a | -30 to -25°F | 2 km |
| 54557 | 4a | -30 to -25°F | 14 km |
| 54538 | 4a | -30 to -25°F | 16 km |
| 54512 | 4a | -30 to -25°F | 17 km |
| 54547 | 4a | -30 to -25°F | 20 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 USC00477092, at 46.1222, -89.8772, elevation 491 m (1,612 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 195.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Minocqua (29 km)
- St. Germain (38 km)
- Hurley (45 km)
- Willow Rsvr (46 km)
- Park Falls Dnr HQ (49 km)
- Eagle River (53 km)
- Butternut 3sw (54 km)
- Saxon 1wsw (59 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.