U.S. Climate Regions
National Oceanic and Atmospheric Administration
National Climatic Data Center
Through climate analysis, National Climatic Data Center scientists have identified nine climatically consistent regions within the contiguous United States which are useful for putting current climate anomalies into a historical perspective (Karl and Koss, 1984). See map below.
All Regions
Central
East North Central
Northeast
Northwest
South
Southeast
Southwest
West
West North Central
Central
Kentucky (KY)
Illinois (IL)
Indiana (IN)
Missouri (MO)
Ohio (OH)
Tennessee (TN)
West Virginia (WV)
East North Central
Iowa (IA)
Michigan (MI)
Minnesota (MN)
Wisconsin (WI)
Northeast
Connecticut (CT)
Delaware (DE)
Maine (ME)
Maryland (MD)
Massachusetts (MA)
New Hampshire (NH)
New Jersey (NJ)
New York (NY)
Pennsylvania (PA)
Rhode Island (RI)
Vermont (VT)
Northwest
Idaho (ID)
Oregon (OR)
Washington (WA)
South
Arkansas (AR)
Louisiana (LA)
Kansas (KS)
Mississippi (MS)
Oklahoma (OK)
Texas (TX)
Southeast
Alabama (AL)
Florida (FL)
Georgia (GA)
North Carolina (NC)
South Carolina (SC)
Virginia (VA)
Southwest
Arizona (AZ)
Colorado (CO)
New Mexico (NM)
Utah (UT)
West
California (CA)
Nevada (NV)
West North Central
Montana (MT)
Nebraska (NE)
North Dakota (ND)
South Dakota (SD)
Wyoming (WY)
Reference
- Thomas R. Karl and Walter James Koss, 1984: "Regional and National Monthly, Seasonal, and Annual Temperature Weighted by Area, 1895-1983." Historical Climatology Series 4-3, National Climatic Data Center, Asheville, NC, 38 pp.
Questions?
For all climate questions, please contact the National Climatic Data Center's Climate Services and Monitoring Division:
Climate Services and Monitoring Division
NOAA/National Climatic Data center
151 Patton Avenue
Asheville, NC 28801-5001
fax: +1-828-271-4876
phone: +1-828-271-4800
email: ncdc.info@noaa.gov
To request climate data, please E-mail:ncdc.orders@noaa.gov
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