There’s a temperature split in the upcoming winter months, with warmer-than-normal temperatures across the South and cooler in the Northern Plains and Pacific Northwest. Here’s how the months break down:

A slow-moving storm is soaking California, especially the L.A. Basin. Flooding, debris flows, rockslides and even a few thunderstorms are possible. Here's the latest:

A low pressure system has moved across the Northeast, bringing wintry weather to the area. Parts of New York and Vermont could see as much as a foot of lake-effect snow in isolated areas. Across portions of Maine, snowfall could potentially exceed 5 inches. Ice is also a big threat, which could lead to hazardous driving conditions and power outages. Strong, gusty winds will also threaten the Northeast, with wind advisories in place, areas could see 30 to 40 mph at times. Here’s the latest.

Temperatures will feel more like spring across much of the country’s mid-section this week, as highs soar into the 70s and 80s for the Southern Plains and South. Dozens of record highs could fall as the warm weather spreads eastward through the week. Watch to get the latest on the fall warm-up.

When you run in cold and dry conditions, the air strips moisture from the bronchial lining in your airways. When you run in hot, humid conditions your breathing often feels heavy because your body is straining itself trying to cool off.