This heatmap visualizes average monthly temperatures for seven U.S. states in 2016, using a yellow-to-orange color scale where warmer temperatures appear brighter. The p5.js sketch loads CSV data via `loadTable`, processes it in `preload()` and `setup()`, and renders colored squares for each state–month combination on a Canvas. A legend explains the color range, and axis labels identify states and months. The code uses p5.js drawing functions like `fill()` and `square()` to construct the grid.