A scatterplot displays daily average temperatures in San Francisco for December 2020, with each circle representing a day's reading. The chart uses a time-scaled x-axis for dates and a linear y-axis for temperature in Fahrenheit, with gridlines and labeled axes. Built with D3 v5, the visualization loads data from a CSV file, parses dates via `new Date()`, and renders circles using `scaleTime`, `scaleLinear`, `axisBottom`, and `axisLeft`. The SVG output includes a title, semi-transparent purple points, and styled tick marks.