U.S. Hardiness Zones
Renovators Place Columnist
Oct 08, 2009
Range
|
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 |
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