Frost dates for Friendship, WI
At Friendship, the median last spring frost (32°F) is May 9 and the median first fall frost is Oct 3, for a typical growing season of 147 days. For a 90% chance that the last frost has passed, wait until May 23. Nearby ZIP codes are in USDA hardiness zone 4b.
- May 9Last spring frost (median)50% chance of 32°F after this date
- May 23Safer planting date10% chance of 32°F after this date
- Oct 3First fall frost (median)50% chance of 32°F by this date
- 147 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 4 | May 20 | May 31 |
| 32°F | Apr 23 | May 9 | May 23 |
| 28°F | Apr 14 | Apr 29 | May 14 |
| 24°F | Apr 3 | Apr 18 | May 4 |
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 10 | Sep 24 | Oct 6 |
| 32°F | Sep 19 | Oct 3 | Oct 16 |
| 28°F | Sep 27 | Oct 13 | Oct 27 |
| 24°F | Oct 9 | Oct 25 | Nov 7 |
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 | 106 days | 127 days | 147 days |
| 32°F | 127 days | 147 days | 166 days |
| 28°F | 146 days | 166 days | 186 days |
| 24°F | 166 days | 188 days | 208 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 |
|---|---|---|---|
| 53934 | 4b | -25 to -20°F | 1 km |
| 53910 | 4b | -25 to -20°F | 10 km |
| 54613 | 4b | -25 to -20°F | 13 km |
| 53936 | 4b | -25 to -20°F | 15 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 USC00472973, at 43.9750, -89.8308, elevation 288 m (945 ft).
- Data quality: Representative (10+ years), 17 years of freeze data.
- Average days per year at or below 32°F: 169.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Necedah (21 km)
- Mauston 1 SE (28 km)
- Hancock Exp. Farm (28 km)
- Necedah 5 WNW (29 km)
- Wisconsin Dells (41 km)
- Wisconsin Rapids Alexander Field (43 km)
- Wisconsin Rapids (46 km)
- Montello (47 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.