Heat alerts are in effect from California to Montana.
Some 32 million people are under heat alerts as the West experiences another record-breaking heat wave during elevated drought and fire conditions.
Heat alerts are in effect from California to Montana, with excessive heat warnings for cities including Las Vegas, Salt Lake City and Sacramento, California.
Temperatures could reach as high as 130 degrees in Death Valley, California, on Saturday and Sunday, after hitting a high of 130 degrees on Friday, based on preliminary data. If Death Valley officially reaches that temperature again on Saturday, that could tie its record for most consecutive days at or above 130 degrees.
Las Vegas is forecast to be in the triple digits for the next three days, with a high of 117 degrees on Saturday. The National Weather Service office in Las Vegas predicted that some areas "may see all-time record highs challenged or exceeded" this weekend.
Salt Lake City could see triple-digit temperatures Sunday and Monday, after a forecasted high of 99 degrees on Saturday.
Sacramento is expected to reach 111 degrees Saturday, after hitting a daily high-temperature record of 109 on Friday. The National Weather Service office in Sacramento warned that the "dangerously hot temperatures" will "increase the threat for heat-related illnesses," and advised that people stay hydrated and limit outdoor activities.