This tool presents historical temperature averages for each of the states in the contiguous United States, which can be displayed as maps and time-series graphs. Users can select a state of interest and one of three variables: minimum, mean, or maximum temperature. The tool graphs that state’s trend from 1895 to present. Users can also specify whether they want to display annual averages, or averages for any of the four seasons.

This tool allows users to determine whether and how much a given state has warmed or cooled since 1895.