NORTH TEXAS (CBSDFW.COM) - Overnight lows Sunday should reach the 40s after an afternoon that saw wide disparities in temperatures throughout the region.

At one point during the day, Wichita Falls logged temperatures in the 40s while areas east of Dallas enjoyed a fair day in the 70s. This cold air, which was about halfway through North Texas during the afternoon, will push back up north by Monday.

Expect a mild Monday afternoon with lots of cloud cover. After the sun sets, areas from Wichita Falls to Gainsville and south – Graham, Mineral Wells – will likely see rain or sleet begin in the late evening.

About three inches to six inches of rain, sleet or ice is going to fall in our northwest corner, thus having a significant impact on travel.

Look for very windy and cold weather overnight in these areas. Meanwhile, heavy rain will likely move into the Dallas-Fort Worth Area; about an inch of rain could fall during the night. Expect temperatures to stay in the 50s until daybreak.

From about 6 a.m. to 9 a.m. Tuesday, heavy sleet with ice pellets is likely. Temperatures will drop from the 40s to near-freezing.

From 9 a.m. to 2 p.m., light sleet may change over to snow. Winds will pick up during midday to 30 to 35 miles per hour. Temperatures will be below freezing by lunchtime.

From 2 p.m. to 7 p.m., light snow, strong winds and temperatures in the to upper 20s will round out the daylight.

The worst-case scenario for the area is an icing event in the afternoon. Any water from the morning rain is likely to freeze. Meaning, residents will drive through heavy rain to get to work, and deal with icing, bitter cold and wind chills driving home.

Counties along the Red River will be hit hardest with this system.

Temperatures Wednesday will be locked in the 20s during the day. The winds will lessen as the afternoon creeps in. There might be some flurries this day, which will likely be the coldest of 2011.

Lows Thursday morning will be close to single numbers, and highs will stick around the 30s. But it ought to be a dry Super Bowl weekend, with temperatures in the 40s on Saturday and around 50 Sunday.