Winter's back - at least for a day or so.

Forecasters say temperatures will sink to a brisk minus 8C overnight Thursday, but an emerging cold front will make Friday — and the start of the weekend — feel much colder, a harsh minus 20C.

Throughout the day, the Friday sunshine will be deceiving so remember to wear layers, meteorologists warn, especially since Friday night’s temperature is expected to dip to a significant low of minus 5C. Winds will make it feel even colder.

Temperatures will remain about 7 degrees below seasonal norms — meaning no patio weather, especially with rain forecast for Sunday, along with 4C temperatures.

“It's still March, so you have to remember, we're normally not that warm. We might have had warm weather lately, but it wasn't here to stay,” said Desjanelle Matthews, a meteorologist with Environment Canada.

The good news is temperatures should rise back to double digits by Monday and a high of 13C predicted for next Wednesday, said Dave Phillips, Environment Canada meteorologist.