Nebraska climate

Nebraska Plant Hardiness Zones

Nebraska’s towns run from zone 5a to zone 6a: the average coldest winter night is -7.8°F at Elmwood and -19.7°F at Rushville.

Hardiness zones in Nebraska

In USDA’s colors, neighboring states washed out. Zones follow elevation, coasts and cities down to half a mile. Drawn by WeatherOverTime from the USDA-ARS and Oregon State University PRISM Climate Group 2023 GIS data; this is not the official USDA Plant Hardiness Zone Map.

Map of the 2023 plant hardiness zones across Nebraska, from zone 4b to zone 6a, with the state’s border drawn.
  • 4b
  • 5a
  • 5b
  • 6a

Open the live map with plant hardiness zones

Towns by zone

Each town’s 1991-2020 average annual extreme minimum at its center, read from the map’s 800 m grid. Warmest zone first.

6a Zone 6a, -10 to -5°F 50 towns

5b Zone 5b, -15 to -10°F 110 towns

5a Zone 5a, -20 to -15°F 58 towns

Counties

At the county’s center; a county with hills or a coast spans several zones.

CountyZone at the centerAverage coldest night
Adams County6a-9.8°F
Antelope County5a-15.1°F
Arthur County5a-15.1°F
Banner County5a-15.2°F
Blaine County5a-15.8°F
Boone County5b-14.3°F
Box Butte County5b-15°F
Boyd County5a-16.1°F
Brown County5b-14.3°F
Buffalo County5b-12°F
Burt County5b-13.4°F
Butler County5b-12.8°F
Cass County6a-9.6°F
Cedar County5b-14.7°F
Chase County5b-11.6°F
Cherry County5b-14.7°F
Cheyenne County5b-12.7°F
Clay County6a-8.8°F
Colfax County5b-13.2°F
Cuming County5b-14.6°F
Custer County5b-14.9°F
Dakota County5a-15.8°F
Dawes County5a-17.4°F
Dawson County5b-12.3°F
Deuel County5b-12.7°F
Dixon County5a-16.2°F
Dodge County5b-12.5°F
Douglas County6a-9.4°F
Dundy County5b-11.3°F
Fillmore County6a-8.5°F
Franklin County6a-8.7°F
Frontier County5b-11°F
Furnas County6a-9.7°F
Gage County6a-9.4°F
Garden County5b-14.9°F
Garfield County5a-15.6°F
Gosper County5b-10.4°F
Grant County5a-15.9°F
Greeley County5a-15.6°F
Hall County5b-11.5°F
Hamilton County6a-9.9°F
Harlan County6a-9°F
Hayes County6a-9.4°F
Hitchcock County6a-10°F
Holt County5a-15.1°F
Hooker County5b-14°F
Howard County5b-13°F
Jefferson County6a-8.6°F
Johnson County5b-11.2°F
Kearney County5b-10.7°F
Keith County6a-9.4°F
Keya Paha County5a-15.9°F
Kimball County5b-14.8°F
Knox County5a-15.4°F
Lancaster County6a-8.6°F
Lincoln County5b-12°F
Logan County5b-15°F
Loup County5a-15.8°F
Madison County5b-14.4°F
McPherson County5b-14°F
Merrick County5b-10.4°F
Morrill County5b-13.2°F
Nance County5b-12.2°F
Nemaha County5b-11°F
Nuckolls County6a-9.2°F
Otoe County5b-10.6°F
Pawnee County6a-9.3°F
Perkins County5b-12.2°F
Phelps County6a-9.7°F
Pierce County5a-15.2°F
Platte County5b-13.6°F
Polk County5b-11.7°F
Red Willow County6a-9.4°F
Richardson County6a-9.1°F
Rock County5a-15.3°F
Saline County6a-9.3°F
Sarpy County6a-9.6°F
Saunders County5b-11.1°F
Scotts Bluff County5a-16.2°F
Seward County5b-11.7°F
Sheridan County5a-18.4°F
Sherman County5b-14.1°F
Sioux County5a-19.9°F
Stanton County5b-14.8°F
Thayer County6a-8.4°F
Thomas County5b-13.8°F
Thurston County5a-15.7°F
Valley County5b-14.8°F
Washington County5b-10.2°F
Wayne County5a-15.1°F
Webster County5b-11.1°F
Wheeler County5a-15.1°F
York County5b-10.7°F

The zones

A plant hardiness zone is set by the average of each winter’s single coldest temperature, 1991 to 2020: zones are 10°F apart and each half zone, a and b, 5°F. It says how cold a winter night usually gets, not the coldest it has ever been, and nothing about summer heat, rain or soil. Plant labels give the coldest zone a perennial survives in.

ZoneAverage coldest nightIn Celsius
5a-20 to -15°F-28.9 to -26.1°C
5b-15 to -10°F-26.1 to -23.3°C
6a-10 to -5°F-23.3 to -20.6°C

Sources

Hardiness zones: USDA Plant Hardiness Zone Map, 2023, Agricultural Research Service, U.S. Department of Agriculture, from the GIS data of the PRISM Climate Group, Oregon State University, which may be freely reproduced and redistributed. Drawn by WeatherOverTime from the USDA-ARS and Oregon State University PRISM Climate Group 2023 GIS data; this is not the official USDA Plant Hardiness Zone Map.