A heat wave will slowly ripple across the country during the next few days, spreading record highs to the mid-Atlantic by early next week.

Records So Far

On Mother's Day, Reno, Nevada, soared to its first 90s of the year, setting a daily record high of 92 degrees. Death Valley tied its daily record of 112 degrees on Sunday. Appropriately named Thermal, California, reached 108 degrees, tying its record set in 2025.

On Monday, Las Vegas set a new daily record after topping out at 104 degrees. Salt Lake City and Reno both set a daily record at 92 degrees. And Casper, Wyoming, even set a new daily record at 85 degrees.

Tuesday was the peak of the intense heat across the West, and even more daily records fell. Las Vegas' 104 degrees was a daily record, and so was Death Valley's 116 degrees. Other records include Safford, Arizona (102), Lancaster Fox Field, California (98), Boise, Idaho (96), Grand Junction, Colorado (94), Salt Lake City, Utah (93), Reno, Nevada ( 91) and Seattle (82), among others.

Wednesday brought some more daily records being tied or broken. Some notable ones were Amarillo, Texas (98), Billings, Montana (94), Rapid City, South Dakota (93), Elko, Nevada (93), Casper, Wyoming (92) and several others.

Thursday brought daily records for Childress, Texas (101), Dodge City, Kansas (98) and Clayton, New Mexico (91), among others.

Friday brought daily records for Childress, Texas (105), Lincoln, Nebraska (95), St. Joseph, Missouri (93), Wichita, Kansas (93), Hot Springs Memorial Field, Arkansas (91), among others.

Rob Shackelford is a meteorologist and climate scientist at weather.com. He received his undergraduate and master’s degrees from the University of Georgia studying meteorology and experimenting with alternative hurricane forecasting tools.