Climate Data Sources

Climate Offices and Centers

Earth System Research Laboratory (formerly the Climate Diagnostics Center) National Oceanic and Atmospheric Administration (NOAA)
Develops tools to analyze, interpret, and forecast important climate variations on time scales ranging from a few weeks to centuries.

Climate Prediction Center, National Oceanic and Atmospheric Administration (NOAA), National Weather Service
Climate highlights, assessments, outlooks, monitoring.

Midwestern Regional Climate Center (MRCC), National Climatic Data Center and Illinois State Water Survey
Serves the nine-state Midwest region (Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Ohio, and Wisconsin) with research to explain climate and its impacts on the Midwest.

Regional Climate Centers: Midwest, Highplains, Northeast, Southeast, Southern and Western Regional Climate Centers

National Climatic Data Center (NCDC), National Oceanic and Atmospheric Administration (NOAA)
World's largest active archive of weather data. NCDC produces numerous climate publications. Most popular products include: Climatological Data, Local Climatological Data, Monthly Climatic Data for the World, Hourly Precipitation Data, annual temperature/precipitation/degree day maps, freeze/frost data, snow normals, extreme weather events, etc.

Wisconsin State Climatology Office, Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison
Wisconsin climate resources including: Wisconsin Climate Watch, Wisconsin Seasons and Climate History.

American Association of State Climatologists (AASC): To find other state climatology offices.