Frost dates for Pellston Regional Airport, MI
At Pellston Regional Airport, the median last spring frost (32°F) is May 31 and the median first fall frost is Sep 18, for a typical growing season of 108 days. For a 90% chance that the last frost has passed, wait until Jun 21. Nearby ZIP codes are in USDA hardiness zones 4b to 5a.
- May 31Last spring frost (median)50% chance of 32°F after this date
- Jun 21Safer planting date10% chance of 32°F after this date
- Sep 18First fall frost (median)50% chance of 32°F by this date
- 108 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 16 | May 31 | Jun 21 |
| 28°F | Apr 30 | May 19 | Jun 2 |
| 24°F | Apr 21 | May 4 | May 22 |
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 | Sep 2 | Sep 18 | Oct 3 |
| 28°F | Sep 17 | Oct 1 | Oct 17 |
| 24°F | Sep 30 | Oct 15 | Nov 3 |
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 | 47 days | 77 days | 104 days |
| 32°F | 79 days | 108 days | 131 days |
| 28°F | 114 days | 136 days | 159 days |
| 24°F | 141 days | 163 days | 187 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 |
|---|---|---|---|
| 49769 | 5a | -20 to -15°F | 5 km |
| 49716 | 4b | -25 to -20°F | 7 km |
| 49706 | 5a | -20 to -15°F | 14 km |
| 49717 | 5a | -20 to -15°F | 17 km |
| 49749 | 4b | -25 to -20°F | 23 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 USW00014841, at 45.5644, -84.7928, elevation 215 m (705 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 180.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Pellston Airport #2 (1 km)
- Cross Village 1e (19 km)
- Petoskey (26 km)
- Petoskey Ncmc (26 km)
- Cheboygan (27 km)
- St. Ignace Mackinac Br (32 km)
- St. Ignace (33 km)
- Boyne Falls (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.