Wednesday was the hottest March day ever in many cities across California, Nevada and Arizona. Phoenix recorded its earliest 100-degree day.

This isn't an ordinary heat wave. Many locations could set new all-time March, even April, record highs from the West Coast into the Plains. And this will have one other impact that could linger into summer.

Southern California faces a third day of record-breaking temperatures as an unusually strong March heat wave pushes the mercury up to 35 degrees above normal.

California’s massive heat wave is bringing out deadly creatures as snake wrangler says calls are up over prior year.

An early-season heat wave is impacting nearly 50 million people in the western U.S., while the Midwest and East Coast recover from severe winter storms and tornadoes.

The outage comes as Southern California broils under a multi-day heat wave that's sent temperatures climbing into the 80s and 90s across the Southland.

As a record-breaking mid-March heat wave grips California and much of the western United States, state legislators are renewing focus on wildfire prevention and insurance affordability. The Senate Republican Caucus on Tuesday introduced a legislative package aimed at reducing wildfire risk and easing the financial burden on homeowners,

Swaths of SoCal face heat-related advisories and forecasted record-breaking temperatures. It doesn't take much to dry out vegetation.