Frost dates for Hesperia 4 WNW, MI
At Hesperia 4 WNW, the median last spring frost (32°F) is May 17 and the median first fall frost is Oct 1, for a typical growing season of 137 days. For a 90% chance that the last frost has passed, wait until Jun 1. Nearby ZIP codes are in USDA hardiness zone 5b.
- May 17Last spring frost (median)50% chance of 32°F after this date
- Jun 1Safer planting date10% chance of 32°F after this date
- Oct 1First fall frost (median)50% chance of 32°F by this date
- 137 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 14 | May 30 | Jun 20 |
| 32°F | Apr 30 | May 17 | Jun 1 |
| 28°F | Apr 20 | May 4 | May 23 |
| 24°F | Apr 7 | Apr 23 | May 11 |
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 3 | Sep 19 | Oct 5 |
| 32°F | Sep 14 | Oct 1 | Oct 13 |
| 28°F | Sep 27 | Oct 12 | Oct 28 |
| 24°F | Oct 10 | Oct 28 | Nov 12 |
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 | 85 days | 113 days | 137 days |
| 32°F | 113 days | 137 days | 158 days |
| 28°F | 137 days | 161 days | 183 days |
| 24°F | 162 days | 186 days | 210 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 |
|---|---|---|---|
| 49421 | 5b | -15 to -10°F | 3 km |
| 49459 | 5b | -15 to -10°F | 16 km |
| 49309 | 5b | -15 to -10°F | 26 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 USC00203769, at 43.5908, -86.1056, elevation 238 m (780 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 166.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Fremont 4 WSW (17 km)
- Hart 3 WSW (27 km)
- Montague 4 NW (29 km)
- Ludington 4 SE (42 km)
- Muskegon Co Airport (48 km)
- Kent City 2 SW (51 km)
- Big Rapids Water Plant (52 km)
- Grand Haven Wastewater Plant (59 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.