Welcome to the climate and weather data research guide!
If you're not sure where to start, one of the best sites to consult is NOAA's Frequently Asked Questions page. This page explains how to find climate and weather data and provides links to most of the major databases.
The next best place to start is the National Climate Data Center (NCDC), a major data repository for climate data in the U.S.
National Climate Data CenterYou can get yearly and monthly averages, search for data at particular locations, as well as get Global and U.S. Annual Climate reports. Data is sorted by method collected (i.e. weather balloon, marine and ocean, satellite, radar, etc.). My preference is to use the "Quick Links" feature to access data by category.
If you're looking for more specific regional datasets in the United States the best place to start is the NOAA Regional Climate Centers web site.
NOAA Regional Climate Centers- This link opens in a new window
There are six total regions in the U.S. and this resource is more likely to have specific data than the NCDC.
Alternatively, if you're looking specifically at water data (groundwater, aquifers, etc.) try the U.S. Geological Service's (USGS) National Water Information System (NWIS).
U.S. Geological Survey: National Water Information Service- This link opens in a new window
This web site allows you to search for datasets by data type, update time, state/territory, altitude and numerous other criteria.You can also narrow your search to groundwater, water quality,surface water, or water use.
If your climate or weather data needs are Northfield specific, try the Carleton College Weather Database.
Carleton College Weather Database- This link opens in a new window
Includes temperature, heat index, wind chill, barometric pressure, rainfall, wind speed, humidity and wind chill. Plot any variable by minute, month or year.