Minnesota Hardiness Zones

Minnesota covers USDA plant hardiness zones 3a to 5a on the 2023 map, so its coldest areas average −40 to −35 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.

Minnesota hardiness zone map

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This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.

Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.

Zones and daylight by city

City	Zone	Coldest night	Longest day	Shortest day
Minneapolis	5a	−20 to −15 °F	15h 37m	8h 46m
St. Paul	5a	−20 to −15 °F	15h 37m	8h 46m
Rochester	4b	−25 to −20 °F	15h 29m	8h 53m
Duluth	4b	−25 to −20 °F	15h 52m	8h 32m
Bloomington	5a	−20 to −15 °F	15h 36m	8h 47m
St. Cloud	4b	−25 to −20 °F	15h 41m	8h 42m
Mankato	5a	−20 to −15 °F	15h 31m	8h 52m

Gardening in Minnesota?

Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.

Questions

What hardiness zones are in Minnesota?

Minnesota spans USDA zones 3a to 5a on the 2023 map. Among its larger cities, Rochester is coldest (zone 4b) and Minneapolis is warmest (zone 5a).

How do I find my exact zone in Minnesota?

Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.

How much sun do gardens in Minnesota get?

In Minneapolis, an open spot gets up to 15.6 hours of daylight in June but only 8.8 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.