Frost dates for Tipton 2wnw, MI
At Tipton 2wnw, the median last spring frost (32°F) is May 5 and the median first fall frost is Oct 10, for a typical growing season of 157 days. For a 90% chance that the last frost has passed, wait until May 23. Nearby ZIP codes are in USDA hardiness zone 6a.
- May 5Last spring frost (median)50% chance of 32°F after this date
- May 23Safer planting date10% chance of 32°F after this date
- Oct 10First fall frost (median)50% chance of 32°F by this date
- 157 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 2 | May 18 | Jun 2 |
| 32°F | Apr 22 | May 5 | May 23 |
| 28°F | Apr 13 | Apr 26 | May 11 |
| 24°F | Apr 2 | Apr 15 | Apr 30 |
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 18 | Oct 1 | Oct 11 |
| 32°F | Sep 28 | Oct 10 | Oct 23 |
| 28°F | Oct 9 | Oct 22 | Nov 3 |
| 24°F | Oct 20 | Nov 2 | Nov 15 |
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 | 115 days | 135 days | 155 days |
| 32°F | 134 days | 157 days | 175 days |
| 28°F | 157 days | 178 days | 197 days |
| 24°F | 179 days | 201 days | 219 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 |
|---|---|---|---|
| 49287 | 6a | -10 to -5°F | 3 km |
| 49265 | 6a | -10 to -5°F | 6 km |
| 49230 | 6a | -10 to -5°F | 11 km |
| 49253 | 6a | -10 to -5°F | 15 km |
| 49220 | 6a | -10 to -5°F | 19 km |
| 49233 | 6a | -10 to -5°F | 21 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 USC00208202, at 42.0283, -84.1108, elevation 296 m (970 ft).
- Data quality: Representative (10+ years), 11 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
- Adrian 2 NNE (15 km)
- Tecumseh (15 km)
- Manchester (15 km)
- Adrian Lenawee Co Airport (18 km)
- Saline 4sw (26 km)
- Blissfield 1nne (29 km)
- Saline Wastewater Plant (31 km)
- Chelsea (34 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.