Plant Maps
Find the Plantmaps Heat Zone for Your Zipcode:

Interactive Heat Zones Map for Iowa

To assist Iowa gardeners, Plantmaps has derived zones indicating the average number of days each year that an area experiences temperatures over 86 degrees F. These zones are derived from the historical climate data from the National Weather Service.

Plantmaps Heat Zone 1

< 1 days > 86°F

Plantmaps Heat Zone 2

1 - 7 days > 86°F

Plantmaps Heat Zone 3

8 - 14 days > 86°F

Plantmaps Heat Zone 4

15 - 30 days > 86°F

Plantmaps Heat Zone 5

31 - 45 days > 86°F

Plantmaps Heat Zone 6

46 - 60 days > 86°F