Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

"Dangerous heat will intensify across much of the Northeast and Mid-Atlantic early this week," meteorologist Jacob Hinson said.

New York City also felt the heat, tying its longstanding daily record of 96 degrees for the date, set in 1888 in Central Park ...

As severe thunderstorms and rain hit much of the central part of the United States, flash flooding threatened parts of Texas and Oklahoma and areas along the Mississippi River. Flood warnings ...

The Central US is gearing up for yet another bout of severe weather following a tumultuous month, as meteorologists warn of significant thunderstorm activity. The northern Plains and Upper Midwest ...

A heat dome has begun to blanket the US and is expected to bake more than 30 states with high temperatures that could shatter ...

The High Plains states affected by the extreme fire risk include Montana, Wyoming, South Dakota, Nebraska Colorado, Kansas, New Mexico, Oklahoma and Texas ...