Daily U.S. Snow Monitoring

This is meteorological data from the U.S. Cooperative Observer Network (COOP), which consists of stations operated by state universities, state or federal agencies, and also private individuals whose stations are managed and maintained by the National Weather Service (NWS). The network includes regular NWS offices, and airports with weather stations operated by the NWS or the Federal Aviation Administration (FAA).

The Network also includes U.S. military bases. There are typically about 8,000 stations operating in any one year. The earliest data, organized by month, from DSI-3220 begins in 1886.