Excessive Heat in District of Columbia
Every excessive heat event the National Weather Service has filed in District of Columbia, year by year, with the most significant episodes. Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
The most significant on the map
The most significant excessive heat episodes in District of Columbia.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 16
- Deaths
- 0
- Injuries
- 0
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Excessive Heat in District of Columbia, January 2 to 4, 2000High pressure off the coast of the southeast U.S. turned winds southerly over the Mid-Atlantic region on the 2nd, starting a conveyer belt of warm air that would remain over the region through the 4th. With ample sunshine, high temperatures reached the upper 60s to lower 70s.
- Excessive Heat in District of Columbia, July 21, 2011Upper-level high pressure provided enough subsidence to cause hot conditions on the 21st. Surface high pressure over the Atlantic caused moist air to move into the region from the south.
- Excessive Heat in District of Columbia, June 29, 2012Plenty of moisture from the Gulf of Mexico caused high humidity during the 29th. Upper-level high pressure along with sunshine caused extremely hot conditions. The combination of the heat and humidity caused heat indices to be near or above 105 degrees.
- Excessive Heat in District of Columbia, July 19, 2013High pressure was located over much of the eastern United States for a consecutive day and light southerly flow persisted all week which led to above normal temperatures and dew points in the mid 70s.
- Excessive Heat in District of Columbia, July 25, 2016A southwesterly flow around high pressure over the Atlantic pumped in plenty of moisture while hot conditions persisted due to an upper-level ridge of high pressure. The heat and humidity caused dangerous heat indices.
- Excessive Heat in District of Columbia, August 13, 2016A southerly flow around high pressure to the east cause hot and humid conditions over the area.
- Excessive Heat in District of Columbia, July 3, 2018An upper-level high along with surface high over the western Atlantic led to hot and humid conditions.
- Excessive Heat in District of Columbia, July 21, 2019Temperatures from the mid 90s to around 100 degrees combined with dew points in the 70s to create dangerously high heat index values.
- Excessive Heat in District of Columbia, July 20, 2019Temperatures from the mid 90s to the lower 100s combined with dew points near 70 degrees to create dangerously high heat index values.
- Excessive Heat in District of Columbia, July 28, 2023The combination of a strong upper-level high pressure over the central United States and moist southwest winds resulted in hot and humid conditions across the Mid-Atlantic that produced excessive heat conditions.
- Excessive Heat in District of Columbia, July 15, 2024Hot and humid conditions overspread much of the region on July 15 and July 16, resulting in the hottest temperatures of the Summer in 2024. Heat index values reached and exceeded 100 to 110, with daily record high temperatures tied and set.
- Excessive Heat in District of Columbia, July 9, 2024This is.
- Excessive Heat in District of Columbia, July 10, 2024Hot and humid conditions overspread the area on July 10, producing heat indices above 100 to 110.
- Excessive Heat in District of Columbia, July 16, 2024Hot and humid conditions overspread much of the region on July 15 and July 16, resulting in the hottest temperatures of the Summer in 2024. Heat index values reached and exceeded 100 to 110, with daily record high temperatures tied and set.
- Excessive Heat in District of Columbia, June 24, 2025A large area of high pressure across the region brought extreme heat and humidity to the Mid-Atlantic.
- Excessive Heat in District of Columbia, June 23, 2025A large area of high pressure across the region brought extreme heat and humidity to the Mid-Atlantic.
More
Excessive Heat everywhereEvery kind of event in District of Columbia
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.