OKLAHOMA CITY - Another round of winter weather moved across the state on Wednesday, causing slick and hazardous road conditions Thursday morning. School districts across the state have canceled classes for Thursday, and many flights at the Will Rogers World Airport have been canceled.

Slick and hazardous conditions are reported on highways and interstates in most areas of the state Thursday morning as precipitation has stopped, according to the Oklahoma Department of Transportation.

Crews report slick highways in western, eastern, southern and central Oklahoma including the Oklahoma City area. Slick areas are reported in Tulsa County, especially on bridges and highway ramps.

According to Meteorologist Lacey Swope, roads are snow/ice covered in much of Oklahoma Thursday morning, after another round of winter storm dumped two to six inches of snow across the state. Drivers are urged to slow down and drive safe.

Oklahoma City officials said they have 28 salt trucks and two one-ton trucks out Thursday morning salting and plowing.

Many schools districts, including Oklahoma City Public Schools, Edmond Public Schools, Moore Public Schools, and more, on Wednesday announced that they have already decided to cancel classes for Thursday. Many schools districts were closed on Wednesday as well due to the threat of winter weather.

Some colleges and universities will be open late Thursday morning. Rose State College and OSU-OKC will open at 10 a.m.. OCCC will start classes at 1 p.m..

Langston University, UCO, and OU will open at 10 a.m.. OCU opens at 11 a.m.. Oklahoma State University in Stillwater opens at normal time.

At the Will Rogers World Airport in Oklahoma City, many flights leaving Oklahoma City have been canceled, including American 3194 that was set to leave Oklahoma City for Chicago at 5:58 a.m., American 2363 that was set to leave Oklahoma City for Dallas, Fort Worth at 6 a.m., and more.

Several flights arriving in Oklahoma City Thursday morning have also been canceled, including American 2514, which was set to arrive from Dallas at 8:49 a.m., and American 3357 that was set to arrive from Chicago 10:56 a.m.

Here's a Thursday morning weather update from the News 9 Weather Team:

"It's very cold Thursday morning with most of the state in single digits and teens. There are a few 20s temps out there. Much of the state has had snowfall and overnight there was very little or limited road improvement, so expect snow packed roads to become icy on your morning travels.

It will be sunny and cold on Thursday. But we will climb above freezing at 39 degrees.

We recorded 4.2 inches of snow at the airport. Mid-day we do expect some melting to occur, but remember this will re-freeze tonight. It will be cold tonight with warmer weather starting Friday."

Send us your snow day photos at pics@news9.net.!