Minnesota Frost Dates
Minnesota has a distinctly short growing season in much of the state, with quick transitions and respect for frost. Southern and urban areas usually gain some breathing room, but northern locations and exposed country can face late spring frost and an early fall finish.
Look up your exact frost dates
Frost timing shifts across Minnesota with elevation and distance from water. Enter your ZIP code for dates from your nearest weather station.
Minnesota locations
| ZIP | Area | Hardiness zone |
|---|---|---|
| 55105 | St. Paul | 5a |
| 55108 | Falcon Heights | 5a |
| 55318 | Chaska | 4b |
| 55347 | Eden Prairie | 5a |
| 55415 | Minneapolis | 5a |
| 55427 | Golden Valley | 5a |
| 55429 | Crystal | 5a |
| 55454 | Minneapolis | 5a |
| 55455 | Minneapolis | 5a |
| 55802 | Duluth | 5a |
| 55811 | Hermantown | 4b |
| 55814 | Hermantown | 4b |
| 56093 | Waseca | 4b |
| 56201 | Willmar | 4b |
| 56219 | Browns Valley | 4b |
| 56308 | Alexandria | 4b |
| 56321 | St. John's University | 4b |
| 56442 | Crosslake | 4a |
| 56501 | Detroit Lakes | 4a |
| 56542 | Fosston | 3b |
| 55001 | Afton | 5a |
| 55003 | Bayport | 5a |
| 55005 | East Bethel | 4b |
| 55006 | Braham | 4b |
| 55007 | Brook Park | 4a |
| 55008 | Cambridge | 4b |
| 55009 | Cannon Falls | 4b |
| 55011 | East Bethel | 4b |
| 55012 | Center City | 4a |
| 55013 | Chisago City | 4b |
| 55014 | Lino Lakes | 5a |
| 55016 | Cottage Grove | 5a |
| 55017 | Princeton | 4b |
| 55018 | Dennison | 4b |
| 55019 | Dundas | 4b |
| 55020 | Elko New Market | 4b |
| 55021 | Faribault | 4b |
| 55024 | Farmington | 5a |
| 55025 | Forest Lake | 4b |
| 55026 | Frontenac | 4b |
| 55027 | Goodhue | 4b |
| 55029 | Stanchfield | - |
| 55030 | Henriette | 4a |
| 55031 | New Trier | 4b |
| 55032 | Harris | 4b |
| 55033 | Hastings | 5a |
| 55036 | Henriette | 4a |
| 55037 | Hinckley | 4a |
| 55038 | Hugo | 4b |
| 55040 | Isanti | 4b |
| 55041 | Lake City | 4b |
| 55042 | Lake Elmo | 5a |
| 55043 | Lakeland | 5a |
| 55044 | Lakeville | 4b |
| 55045 | Lindstrom | 4b |
| 55046 | Lonsdale | 4b |
| 55047 | Scandia | 4b |
| 55049 | Medford | 4b |
| 55051 | Mora | 4a |
| 55052 | Morristown | 4b |
Source: NOAA 1991–2020 U.S. Climate Normals (public domain) and USDA 2023 Plant Hardiness Zone Map. Page updated Aug 4, 2026.