|
USDA Zone
|
Temperature
Range |
Example
Cities |
|
1 |
Below
-50 F (below
-45.6C) |
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
Barstow, 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 |
