Frost dates for Old Mission 3ssw, MI
At Old Mission 3ssw, the median last spring frost (32°F) is May 13 and the median first fall frost is Oct 19, for a typical growing season of 158 days. For a 90% chance that the last frost has passed, wait until May 29. Nearby ZIP codes are in USDA hardiness zones 6a to 6b.
- May 13Last spring frost (median)50% chance of 32°F after this date
- May 29Safer planting date10% chance of 32°F after this date
- Oct 19First fall frost (median)50% chance of 32°F by this date
- 158 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 7 | May 26 | Jun 8 |
| 32°F | Apr 28 | May 13 | May 29 |
| 28°F | Apr 16 | Apr 30 | May 19 |
| 24°F | Apr 5 | Apr 19 | May 5 |
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 21 | Oct 4 | Oct 18 |
| 32°F | Oct 1 | Oct 19 | Nov 5 |
| 28°F | Oct 18 | Nov 4 | Nov 22 |
| 24°F | Nov 1 | Nov 16 | Dec 6 |
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 | 111 days | 130 days | 151 days |
| 32°F | 135 days | 158 days | 183 days |
| 28°F | 163 days | 186 days | 208 days |
| 24°F | 188 days | 212 days | 235 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 |
|---|---|---|---|
| 49686 | 6b | -5 to 0°F | 8 km |
| 49629 | 6a | -10 to -5°F | 10 km |
| 49648 | 6a | -10 to -5°F | 16 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 USC00206158, at 44.9214, -85.5161, elevation 200 m (656 ft).
- Data quality: Representative (10+ years), 13 years of freeze data.
- Average days per year at or below 32°F: 157.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- NW Michigan Rsch Farm (13 km)
- Traverse City Munson (21 km)
- Traverse City Cherry Cptl Airport (21 km)
- Northport 2w (26 km)
- Maple City 1e (26 km)
- Kalkaska (35 km)
- S Boardman 2w (35 km)
- Fife Lake 2wnw (39 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.