As a significant winter storm approaches the Houston area, snow, sleet and ice are all becoming certainties as the temperatures decrease and conditions are forecasted to be more frosty than expected.

The potential for sleet or ice during next week’s freeze is becoming more certain as the weather forecasts for the coming days become clearer.

Temperatures are expected to dip below freezing on Sunday night, according to the National Weather Service. As of Friday, Houston's forecast also called for a likelihood of snow on Monday night and Tuesday morning.

Southeast Texas ' outlook for next week's winter storm continues to worsen, with a growing likelihood of a deep freeze and substantial wintry precipitation, snow and sleet in the Houston area.

Preparations are underway from Houston to Atlanta as a rare winter storm sets its sights on the southern U.S., where it's expected to bring a messy mix of heavy snow, sleet and freezing rain that could have a major impact on travel and daily life.

With freezing temperatures and icy conditions threatening Texas, many school districts are monitoring the forecast and deciding if they should cancel school.

The FOX Forecast Center is monitoring a rare winter storm that’s expected to bring heavy snow, sleet and freezing rain along the Gulf Coast and into the South. FOX Weather meteorologists Ari Sarsalari and Kendall Smith break down the forecast.