Frost dates for Pell Lake, WI
At Pell Lake, the median last spring frost (32°F) is Apr 30 and the median first fall frost is Oct 13, for a typical growing season of 164 days. For a 90% chance that the last frost has passed, wait until May 16. Nearby ZIP codes are in USDA hardiness zone 5b.
- Apr 30Last spring frost (median)50% chance of 32°F after this date
- May 16Safer planting date10% chance of 32°F after this date
- Oct 13First fall frost (median)50% chance of 32°F by this date
- 164 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 | Apr 29 | May 12 | May 27 |
| 32°F | Apr 16 | Apr 30 | May 16 |
| 28°F | Apr 3 | Apr 19 | May 4 |
| 24°F | Mar 19 | Apr 4 | Apr 22 |
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 19 | Oct 3 | Oct 18 |
| 32°F | Sep 28 | Oct 13 | Oct 27 |
| 28°F | Oct 10 | Oct 25 | Nov 9 |
| 24°F | Oct 23 | Nov 5 | Nov 21 |
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 | 123 days | 143 days | 163 days |
| 32°F | 144 days | 164 days | 185 days |
| 28°F | 165 days | 188 days | 210 days |
| 24°F | 190 days | 214 days | 237 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 |
|---|---|---|---|
| 53128 | 5b | -15 to -10°F | 0 km |
| 53157 | 5b | -15 to -10°F | 3 km |
| 60071 | 5b | -15 to -10°F | 7 km |
| 53181 | 5b | -15 to -10°F | 8 km |
| 60034 | 5b | -15 to -10°F | 11 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 USC00476420, at 42.5319, -88.3325, elevation 256 m (840 ft).
- Data quality: Provisional (10+ years, gaps not filled), 10 years of freeze data.
- Average days per year at or below 32°F: 149.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lake Geneva Wastewater Plant (11 km)
- Burlington (15 km)
- Paddock Lake (21 km)
- Rochester Wastewater Plant (23 km)
- Delavan Wastewater Plant (29 km)
- Union Grove (30 km)
- Kenosha Regional Airport (33 km)
- Kenosha (42 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.