A bright start to the morning should transition to clouds and a chance of rain showers this afternoon, the National Weather Service said.
Snow showers are also possible at 2,400 feet and higher in elevation.
Highs today should reach 46 in Spokane and 44 in Coeur d’Alene. Both cities have a 60 percent chance of showers.
A broad low across the eastern Pacific and Gulf of Alaska continues to send a mix of moist ocean air and cold northern air into the region, keeping temperatures on the cool side for early March.
The pattern is expected to continue tonight and into the weekend, but precipitation chances should decline by Saturday night and through Monday.
Highs will be in the 40s and lows in the upper 20s to lower 30s.
The greatest chance of rain or snow arrives on Friday night and continues through the day on Saturday, forecasters said. Light snow accumulations are possible then.
At 7 a.m., it was 28 at Spokane International Airport, 30 in downtown Spokane, 25 in Coeur d’Alene, 26 in Deer Park and 28 in Pullman.