In the United States, the average heat wave has been about four days long in the 2010s. This is about a day longer than the average heat wave that was experienced in the 1960s. In the United States, the frequency has increased steadily, from an average of two heat waves per year to six per year between 1960s and the 2010s.
Profit from the additional features of your individual account
Currently, you are using a shared account. To use individual functions (e.g., mark statistics as favourites, set
statistic alerts) please log in with your personal account.
If you are an admin, please authenticate by logging in again.
Learn more about how ÌÇÐÄÆƽâ°æ can support your business.
Environmental Protection Agency. (April 1, 2021). Average number of individual heat waves in the United States between 1961 and 2019, by decade (in days) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 16, 2026, from /statistics/1293825/us-heat-wave-duration/
Environmental Protection Agency. "Average number of individual heat waves in the United States between 1961 and 2019, by decade (in days)." Chart. April 1, 2021. ÌÇÐÄÆƽâ°æ. Accessed July 16, 2026. /statistics/1293825/us-heat-wave-duration/
Environmental Protection Agency. (2021). Average number of individual heat waves in the United States between 1961 and 2019, by decade (in days). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 16, 2026. /statistics/1293825/us-heat-wave-duration/
Environmental Protection Agency. "Average Number of Individual Heat Waves in The United States between 1961 and 2019, by Decade (in Days)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Apr 2021, /statistics/1293825/us-heat-wave-duration/
Environmental Protection Agency, Average number of individual heat waves in the United States between 1961 and 2019, by decade (in days) ÌÇÐÄÆƽâ°æ, /statistics/1293825/us-heat-wave-duration/ (last visited July 16, 2026)
Average number of individual heat waves in the United States between 1961 and 2019, by decade (in days) [Graph], Environmental Protection Agency, April 1, 2021. [Online]. Available: /statistics/1293825/us-heat-wave-duration/
