It's going to get worse before it gets better.

The Fraser Valley is bracing for more wild weather following predictions a winter storm with snow and freezing rain will hit Friday afternoon and evening.

Environment Canada is forecasting an extended period of freezing rain to continue through most of the night, with an accumulation of up to 20 mm of ice.

Abbotsford Police are warning treacherous driving conditions are expected and that if possible, people should stay off the roads.

Although the conditions in Abbotsford and Mission were not severe Friday morning, public schools in both communities are closed in anticipation of the weather in the afternoon.

The University of the Fraser Valley has also closed all its campuses.

The Central Valley Transit System warns that Abbotsford and Mission HandyDart is running essential services only.

However, all other bus routes are running at regular service levels with the exception of Mission Routes 34 and 32.

Route 34 will not be travelling on James Street but west on 7th to Cedar and south on Cedar back to the exchange.

Mission Route 32 will not be travelling to the Superstore.

Mission RCMP is also advising drivers to use extra caution and to slow down on the slick highways and side roads that are still clogged with snow.

"The main roads are cleared, but the side roads are terrible. With the rain, they will become very slushy and icy underneath," said RCMP Sgt. Miriam Dickson.

However, freezing rain will bring its own hazards on all routes, she added.

"Slow down and drive carefully. Sometimes it appears it's not icy but when you try to stop you'll find yourself in trouble. We have seen a lot of people who thought they were invincible end up in the ditch," she said.

"As the rain progresses, it's only going to get worse."

The storm is expected to transition to milder, moister weather into Saturday as warmer, incoming Pacific air collides with the arctic system that has impacted the Valley all week.

Rain is predicted for Saturday with a high of 7 C.

As the snow piled up in Abbotsford melts, the city is requesting residents, especially those living at the bottom of hills, to monitor nearby storm drains and if possible, clear paths in the snow for the water to drain to prevent flooding.

For weather and road condition updates visit www.weatheroffice.gc.ca or www.drivebc.ca.

For transit updates visit www.bctransit.com/regions/cfv.

-with a file from Christina Toth