Go to Hardiness Zone Map.
Arizona, California, Nevada, Utah
Check the color of the section in your area of the map with the color key below.
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Zone |
Fahrenheit |
Celsius | Example Cities |
|---|---|---|---|
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 |
