Frost dates for Bloomingdale, MI
At Bloomingdale, the median last spring frost (32°F) is May 7 and the median first fall frost is Oct 11, for a typical growing season of 156 days. For a 90% chance that the last frost has passed, wait until May 22. Nearby ZIP codes are in USDA hardiness zone 6a.
- May 7Last spring frost (median)50% chance of 32°F after this date
- May 22Safer planting date10% chance of 32°F after this date
- Oct 11First fall frost (median)50% chance of 32°F by this date
- 156 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 1 |
| 32°F | Apr 23 | May 7 | May 22 |
| 28°F | Apr 13 | Apr 26 | May 13 |
| 24°F | Apr 1 | Apr 15 | Apr 27 |
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 | Sep 30 | Oct 12 |
| 32°F | Sep 28 | Oct 11 | Oct 26 |
| 28°F | Oct 10 | Oct 26 | Nov 10 |
| 24°F | Oct 28 | Nov 9 | Nov 25 |
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 | 134 days | 154 days |
| 32°F | 135 days | 156 days | 177 days |
| 28°F | 160 days | 182 days | 201 days |
| 24°F | 188 days | 207 days | 228 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 |
|---|---|---|---|
| 49026 | 6a | -10 to -5°F | 1 km |
| 49056 | 6a | -10 to -5°F | 9 km |
| 49055 | 6a | -10 to -5°F | 9 km |
| 49027 | 6a | -10 to -5°F | 9 km |
| 49450 | 6a | -10 to -5°F | 14 km |
| 49013 | 6a | -10 to -5°F | 15 km |
| 49079 | 6a | -10 to -5°F | 17 km |
| 49064 | 6a | -10 to -5°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 USC00200864, at 42.3839, -85.9625, elevation 224 m (736 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 153.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Allegan 5ne (26 km)
- S Haven (26 km)
- Kalamazoo Battle Ck Intl Airport (38 km)
- Holland Tulip City Airport (42 km)
- Dowagiac 1 W (46 km)
- Eau Claire 4 NE (47 km)
- Gull Lake Biological Station (47 km)
- Benton Harbor Airport (48 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.