The United States is experiencing an unusual March heatwave this week and into next, shattering previous monthly temperature records by wide margins. This extreme event, while acutely felt by individuals, is conveyed by stark graphics and charts.
Temperatures in the West remain significantly above typical March levels, indicating a persistent early-season heat. Parts of Oklahoma, Nebraska, northern Texas and South Dakota are registering highs at least 20 degrees Fahrenheit (11 degrees Celsius) above their 1991-2020 March averages.