A map shows areas in California where temperatures are expected to surpass 100 this week. There has been an early-season heat ...

The heat will start rolling in today, and the high temperatures are getting higher in the latest forecast. Here's how hot it ...

The heat will start rolling in today, and the high temperatures are getting higher in the latest forecast. Here's how hot it will get.

Dozens of cities are expected to meet or surpass record high temperatures for this time of year as part of a heat wave that ...

The weather later this week will give Ohioans the chance to test out their air conditioners. Here's how hot it will get when ...

Texas cities that could see temperatures climb within a few degrees of highest May temperatures ever recorded include San ...

Texas faces dangerous heat through the weekend as forecasters warn of above-average temperatures and release risk maps for ...

The heat coming to Ohio before the weekend could be a little worse that earlier forecasts predicted. These maps show where it will be the hottest. The hot weather approaching Ohio is looking hotter.

At its most basic: the heat index is what the temperature feels like when you're outside. The chart above shows the combination of air temperature with humidity. It's very important to note the chart ...

A heat dome is bringing extreme temperatures and humidity to southern states and warming the Gulf of Mexico. Here are six ...

More than 14 million people in Florida, 51% of the state, are suffering from drought conditions ranging from abnormally dry ...

Map: NOAA warns that a dangerous heat risk is set to encompass Texas this week, with mid-May temperatures set to soar and feel like mid-August.