Zone a being. The climate of the united states varies due to changes in latitude and a range of geographic features including mountains and deserts.
A listing of counties comprising each climate zone is provided below beginning on page 5.
America climate zones map. Climate zone boundaries follow county boundary lines. Select a climate zone from the map above and view a listing of climate regions by county in the guide to determining climate regions. Generally on the mainland the climate of the u s.
Featuring the work of noaa scientists each snapshot is a public friendly version of an existing data product. We have provided 2 differing climate zone maps of the us with varying levels of detail. Climatezone maps of united states.
Using information gathered from 4 775 us weather sites in the early 2000s the u s. Becomes warmer the further south one travels and drier the further west until one reaches the west coast. It was then divided into three moisture categories designated a b and c.
The building america and iecc climate maps are shown in figures 1 and 2. Department of energy s pacific northwest national laboratory created a simplified map separating north america into 8 general climate zones based primarily on temperature. Each growing zone is 10 f warmer or colder in an average winter than the adjacent zone.
Each growing zone is 10 f warmer or colder in an average winter than the adjacent zone. The usda hardiness zone map divides north america into 11 separate planting zones. Code establishing a baseline for energy efficiency by setting performance standards for the building envelope defined as the boundary that separates heated cooled air from unconditioned outside air mechanical systems lighting systems and service water heating systems in homes and commercial businesses.
If you see a hardiness zone in a gardening catalog or plant description chances are it refers to this usda map. Africa asia europe middle east north america oceania south america. Volume 7 1 to view climates by county.
The usda hardiness zone map divides north america into 11 separate planting zones. This type of climate am most common in north america results from the monsoon winds which change direction according to the seasons. This climate has a driest month which nearly always occurs at or soon after the winter solstice for that side of the equator with rainfall less than 60 mm but more than 1 25 the total annual precipitation.
Portions of this site are based on the cia world fact book a public domain work. Explore a range of easy to understand climate maps in a single interface. The climate regions are described below.
The climate region definitions are based on heating degree days.