A gradual warm-up today and Sunday will give way to the possibility of more wintry weather next week, the National Weather Service says.

After bitter cold and ice canceled school and closed businesses Thursday and Friday, temperatures were expected to rise to the mid-40s today with clouds, and climb to near 60 with sunshine on Super Bowl Sunday, before an evening drop-off to the mid-30s.

“On Sunday, things will change,” NWS meteorologist Chad Entremont said Friday evening. “There’s about a 30 percent chance of rain after midnight going into Monday morning. There’s also a chance of light, dusty snow early Monday morning.”

As the week continues, a 40 percent chance of snow is in the forecast for Wednesday night. Highs next week are expected to be in the 40s, and lows in the 20s.

Road crews were to be on standby Friday night and into the wee hours of today in case ice accumulates on roadways. At about 10 p.m. temperatures hovered just above freezing, and a few snow flurries could be seen.

Most bridges and Interstate 20 overpasses had been covered with sand.

“We’re constantly monitoring the situation,” city Public Works Director Bubba Rainer said Friday evening.

Four weather-related wrecks were reported during the day on Friday, said Vicksburg Warren E-911 shift supervisor Bobby Rufus, down from 29 earlier in the day, reported from midnight to 8 a.m.

Five customers on Scott Road, off Mississippi 27, were without electricity for about an hour Friday after ice weighed down a tree and limbs fell on a line, Entergy spokesman Don Arnold said.

The Mississippi Department of Transportation reported ice on bridges and roads in more than half of the state’s 82 counties. The winter storm is blamed for killing three motorists across the state.

In Louisiana, two people were killed in wrecks, and nearly 28,000 were without electricity.