Climate Central recently created an interactive tool to track temperature records across the United States – weather station by weather station:
"The U.S. just experienced an epic heat wave, and it's hard to process the raw numbers — more than 7,000 daily high temperatures broken or tied, and a nearly equal number of warm overnight low temperature records set or tied."
"This interactive map draws on the National Climatic Data Center's database. You can explore the records state-by-state, weather station-by-weather station. For the most impressive view, zoom out to see the U.S. as a whole, and click "play month" for the month of March. You'll note a surge of warm temperature records start moving across the country, starting on aboutMarch 12 and lasting for more than a week in some spots."
See the tool for yourself by clicking here.