The Current Temperature map shows the current temperatures color ... In most of the world (except for the United States, Jamaica, and a few other countries), the degree Celsius scale is used ...

A cold snap sweeping across large portions of the United States on Tuesday has prompted freeze warnings in at least 10 states, as sub-freezing temperatures threaten to damage crops and delay recovery ...

Across parts of the Midwest, mid-Atlantic and Southeast, 55 million people remained under frost and freeze alerts.

This weekend's forecasts show possible triple digits in Texas this weekend. On average, most of the state reaches its first 100-degree day in June.

Heat islands can run 17 degrees F hotter than a city’s cooler areas. Studying them now may yield ideas for mitigating future warming. ByRyan Morris and Ryan Williams This story appears in the ...