USDA Plant Hardiness Zone Map for North-Midwest US
2001 US National Arboretum "Web Version" of 1990 USDA version
Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota, Wisconsin, Wyoming
Compare the color of the section in your area of the map with the color key below.
| 1 |
Below
-50 F |
Below
-45.6 C |
Fairbanks,
Alaska; Resolute, Northwest Territories (Canada) |
| 2a |
-50
to -45 F |
-42.8
to -45.5 C |
Prudhoe
Bay, Alaska; Flin Flon, Manitoba (Canada) |
| 2b |
-45
to -40 F |
-40.0
to -42.7 C |
Unalakleet,
Alaska; Pinecreek, Minnesota |
| 3a |
-40
to -35 F |
-37.3
to -39.9 C |
International
Falls, Minnesota; St. Michael, Alaska |
| 3b |
-35
to -30 F |
-34.5
to -37.2 C |
Tomahawk,
Wisconsin; Sidney, Montana |
| 4a |
-30
to -25 F |
-31.7
to -34.4 C |
Minneapolis/St.Paul,
Minnesota; Lewistown, Montana |
| 4b |
-25
to -20 F |
-28.9
to -31.6 C |
Northwood,
Iowa; Nebraska |
| 5a |
-20
to -15 F |
-26.2
to -28.8 C |
Des
Moines, Iowa; Illinois |
| 5b |
-15
to -10 F |
-23.4
to -26.1 C |
Columbia,
Missouri; Mansfield, Pennsylvania |
| 6a |
-10
to -5 F |
-20.6
to -23.3 C |
St.
Louis, Missouri; Lebanon, Pennsylvania |
| 6b |
-5
to 0 F |
-17.8
to -20.5 C |
McMinnville,
Tennessee; Branson, Missouri |
| 7a |
0
to 5 F |
-15.0
to -17.7 C |
Oklahoma
City, Oklahoma; South Boston, Virginia |
| 7b |
5
to 10 F |
-12.3
to -14.9 C |
Little
Rock, Arkansas; Griffin, Georgia |
| 8a |
10
to 15 F |
-9.5
to -12.2 C |
Tifton,
Georgia; Dallas, Texas |
| 8b |
15
to 20 F |
-6.7
to -9.4 C |
Austin,
Texas; Gainesville, Florida |
| 9a |
20
to 25 F |
-3.9
to -6.6 C |
Houston,
Texas; St. Augustine, Florida |
| 9b |
25
to 30 F |
-1.2
to -3.8 C |
Brownsville,
Texas; Fort Pierce, Florida |
| 10a |
30
to 35 F |
1.6
to -1.1 C |
Naples,
Florida; Victorville, California |
| 10b |
35
to 40 F |
4.4
to 1.7 C |
Miami,
Florida; Coral Gables, Florida |
| 11 |
above
40 F |
above
4.5 C |
Honolulu,
Hawaii; Mazatlan, Mexico |
USDA
Plant Hardiness Zone Map Homepage
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