Frost dates for Stambaugh 2sse, MI
At Stambaugh 2sse, the median last spring frost (32°F) is Jun 4 and the median first fall frost is Sep 10, for a typical growing season of 95 days. For a 90% chance that the last frost has passed, wait until Jun 26. Nearby ZIP codes are in USDA hardiness zones 4a to 4b.
- Jun 4Last spring frost (median)50% chance of 32°F after this date
- Jun 26Safer planting date10% chance of 32°F after this date
- Sep 10First fall frost (median)50% chance of 32°F by this date
- 95 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 22 | Jun 4 | Jun 26 |
| 28°F | May 7 | May 23 | Jun 6 |
| 24°F | Apr 26 | May 10 | May 26 |
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 | Aug 21 | Sep 10 | Sep 25 |
| 28°F | Sep 7 | Sep 24 | Oct 8 |
| 24°F | Sep 20 | Oct 5 | Oct 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 | 32 days | 58 days | 88 days |
| 32°F | 66 days | 95 days | 118 days |
| 28°F | 100 days | 123 days | 145 days |
| 24°F | 127 days | 148 days | 169 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 |
|---|---|---|---|
| 49915 | 4a | -30 to -25°F | 1 km |
| 49927 | 4a | -30 to -25°F | 7 km |
| 49935 | 4a | -30 to -25°F | 16 km |
| 54542 | 4b | -25 to -20°F | 17 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 USC00207812, at 46.0556, -88.6275, elevation 442 m (1,450 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 211.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Amasa 1w (24 km)
- Iron Mountain Ford Airport (48 km)
- Iron Mtn-Kingsford Wastewater Plant (52 km)
- Watton 2wsw (52 km)
- Covington 1nnw (56 km)
- Paulding (57 km)
- Alberta Ford For Center (66 km)
- Herman (70 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.