Those dreaming of a white Christmas might have to wait another year.

Forecasts for the Pittsburgh area show temperatures rising to seasonal averages for Wednesday through Friday, and then moving into unseasonably warm temperatures for the weekend.

High temperatures on Wednesday will reach 42 degrees in Pittsburgh and 41 degrees in Latrobe, said the weather service. By the weekend, high temperatures are expected to reach the 50s, with an expected high of 55 degrees for Christmas Day.

The Pittsburgh office of the National Weather Service said a high pressure system is moving over Southwest Pennsylvania, after snow showers and flurries hit the region the past couple of days.

Possibilities of precipitation remain very low until Saturday, with some slight chances of rain over the weekend, but still unlikely, according to the weather service.

The service said rain showers from a coastal system could move into the Pittsburgh area by Christmas evening, and precipitation probabilities for Tuesday are above 60%.

Forecasters said the coastal system is a bit unpredictable, but they expect the temperatures to stay too warm for snow for the next several days.

Ryan Deto is a Tribune-Review staff writer. You can contact Ryan by email at rdeto@triblive.com or via Twitter .