U.S. Climate Regions
Through climate analysis, National Centers for Environmental Information 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).
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All RegionsCentral
East North Central
Northeast
Northwest
South
Southeast
Southwest
West
West North Central -
CentralIllinois (IL)
Indiana (IN)
Kentucky (KY)
Missouri (MO)
Ohio (OH)
Tennessee (TN)
West Virginia (WV) -
East North CentralIowa (IA)
Michigan (MI)
Minnesota (MN)
Wisconsin (WI) -
NortheastConnecticut (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) -
NorthwestIdaho (ID)
Oregon (OR)
Washington (WA) -
SouthArkansas (AR)
Kansas (KS)
Louisiana (LA)
Mississippi (MS)
Oklahoma (OK)
Texas (TX) -
SoutheastAlabama (AL)
Florida (FL)
Georgia (GA)
North Carolina (NC)
South Carolina (SC)
Virginia (VA) -
SouthwestArizona (AZ)
Colorado (CO)
New Mexico (NM)
Utah (UT) -
WestCalifornia (CA)
Nevada (NV) -
West North CentralMontana (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.