NEW ORLEANS (WVUE) - Warmer air is settling in for a few days before we see the coldest air of winter arriving late weekend.

A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map makes clear which regions are most exposed. Forecast models show a sharp southward dip in the jet stream that will funnel frigid air from Canada into the central and eastern states,

When will the freezing temperatures arrive? And what comes with it?

Warming into the 70s today, a chance of showers show tomorrow and then we cool back down Saturday. A warm front arrives Sunday bringing a round of thunderstorms Sunday. The Arctic Blast arrives Monday with coldest air of the season/year.

The Arctic air mass is expected to arrive just ahead of this weekend, followed by an increasingly likely snowfall on Sunday into Monday.

Some plants, like avocado trees, grow stronger and more cold hardy as they mature. They also become more difficult to cover. Some people use PVC pipes to build structures they cover with heavy plastic to protect beloved citrus or olive trees. A thick layer of mulch on the ground also can help protect roots.

An Arctic blast is set to grip Iowa later this week, bringing some of the coldest temperatures of the season along with dangerous wind chills after a round of snow and gusty winds midweek.

Many Houstonians will be finding hills nearby to go sledding down due to the snow fall. Before heading to the hills, check road conditions in your area to ensure they're not icy. HOUSTON - Snow in Houston means,