A very warm August wrapped up an extremely hot summer across the U.S., with many cities breaking all-time heat records.

The first eight months of 2024 also ranked as the second-warmest year to date, according to NOAA's National Centers for Environmental Information. A detailed report is available.

Climate by the numbers

August 2024

The average temperature for August across the contiguous U.S. was 74.0 degrees F—1.9 degrees above average—tying with August 1998 as the 15th-warmest August in the 130-year record. Florida had its second-warmest August on record, while Texas and New Mexico both saw their third-warmest August on record.

The average precipitation for the contiguous U.S. in August was 2.46 inches (0.16 of an inch below average), ranking in the driest third of the climate record. Precipitation was below average across much of the South, with Alabama and Mississippi seeing their driest August on record, and Tennessee seeing its second-driest August. In contrast, New York saw its fourth-wettest August on record.

Meteorological summer (June through August 2024)

For the meteorological summer, the average temperature for the contiguous U.S. was 73.8 degrees F—2.5 degrees above average—ranking as the nation's fourth-hottest summer on record. Arizona, California, Florida, Maine and New Hampshire all sizzled through their warmest summer on record.

The summer precipitation total across the contiguous U.S. was 8.30 inches—near average—ranking in the middle third of the historical summer record. Michigan saw its fifth-wettest summer on record while West Virginia had its fifth-driest summer.

Year to date (YTD, January through August 2024)

The average U.S. temperature for the first eight months of 2024 was 56.9 degrees F—3.0 degrees above the 20th-century average—ranking as the second-warmest such YTD in the climate record. New Hampshire, Vermont and West Virginia each saw their warmest January–August period on record.

The nation had 22.93 inches of precipitation for the YTD, 2.23 inches above average, ranking as the 10th-wettest such YTD on record. Rhode Island and Connecticut saw their second-wettest January–August on record.

Other notable highlights

Blistering summer heat roasted many locations. A number of cities across the West, South and East had their warmest summer on record, based on their average temperature for June–August. Of note:

• Phoenix, Arizona: 98.9 degrees F.
• Fort Lauderdale, Florida: 84.6 degrees F.
• Grand Junction, Colorado: 80.1 degrees F.
• Dulles, Virginia: 78.1 degrees F.
• Hartford, Connecticut: 75.5 degrees F.
• Caribou, Maine: 67.3 degrees F.

Tropical cyclones made their mark. Three tropical systems impacted the U.S. in August.

• Debby made landfall as a Category 1 Hurricane on August 5 near Steinhatchee, Florida, and a second landfall as a tropical storm near Bulls Bay, South Carolina, on August 8. The storm brought heavy rains, flooding and strong winds to the Southeast.
• From August 13-14, wind and rain from Tropical Storm Ernesto battered Puerto Rico, causing significant flooding and power outages for nearly half of the island.
• Rain bands and strong winds from Hurricane Hone impacted Hawaii from August 24-25, causing flooding and power outages.

One new billion-dollar weather and climate disaster was confirmed in August 2024—a severe weather event that impacted the central and eastern U.S. in mid-June. There have been 20 separate billion-dollar weather and climate disasters so far this year. The total cost of these events exceeds $53.0 billion, and they have resulted in at least 149 fatalities.