Frost dates for Hale 5ssw #2, MI
At Hale 5ssw #2, the median last spring frost (32°F) is May 23 and the median first fall frost is Sep 26, for a typical growing season of 127 days. For a 90% chance that the last frost has passed, wait until Jun 7. Nearby ZIP codes are in USDA hardiness zones 5a to 5b.
- May 23Last spring frost (median)50% chance of 32°F after this date
- Jun 7Safer planting date10% chance of 32°F after this date
- Sep 26First fall frost (median)50% chance of 32°F by this date
- 127 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 21 | Jun 4 | Jun 22 |
| 32°F | May 5 | May 23 | Jun 7 |
| 28°F | Apr 22 | May 7 | May 26 |
| 24°F | Apr 9 | Apr 25 | May 14 |
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 1 | Sep 16 | Sep 30 |
| 32°F | Sep 14 | Sep 26 | Oct 8 |
| 28°F | Sep 24 | Oct 6 | Oct 22 |
| 24°F | Oct 5 | Oct 21 | Nov 5 |
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 | 80 days | 102 days | 121 days |
| 32°F | 107 days | 127 days | 147 days |
| 28°F | 129 days | 152 days | 173 days |
| 24°F | 155 days | 176 days | 198 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 |
|---|---|---|---|
| 48739 | 5a | -20 to -15°F | 7 km |
| 48770 | 5a | -20 to -15°F | 7 km |
| 48748 | 5b | -15 to -10°F | 11 km |
| 48756 | 5a | -20 to -15°F | 14 km |
| 48765 | 5b | -15 to -10°F | 20 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 USC00203528, at 44.3122, -83.8378, elevation 249 m (816 ft).
- Data quality: Estimated from nearby stations (2+ years), 8 years of freeze data.
- Average days per year at or below 32°F: 183.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lupton 1s (19 km)
- Hale Loud Dam (19 km)
- E Tawas (27 km)
- Glennie 2se (27 km)
- W Branch 3se (30 km)
- Standish 4ne (34 km)
- Mio Wastewater Plant (43 km)
- Mio Hydro Plant (45 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.