March's frustrating reputation will be on full display with a strong weekend Midwest winter storm, followed by a blast of cold air into the Southeast. Here's the latest forecast.

A super El Niño is possible by the end of the year. Here's what warming waters in the Pacific could mean for this summer and the rest of the year.

Some of the most active weather in the country is expected to be in Hawaii over the next few days.

Warmth will shift back to the Southwest by late-week, with historic temperatures forecast for days.

In California's high mountain lakes, male frogs are in a race against time with only three weeks to find a mate before the water refreezes. Their croak speed is a precise thermometer that tells females whether conditions are warm enough for eggs to survive. But climate change is shifting when these lakes thaw and freeze, throwing off timing fine tuned over millennia.