An unseasonably warm weekend in Spokane is expected to give way to cooler temperatures throughout this week, with a slight chance of rain on Tuesday and Wednesday and some snow on mountain passes across the region.

Temperatures in early November usually hover in the upper 40s, but Saturday saw a high of 52 degrees and Sunday’s temperatures topped out at 57 degrees, said Greg Koch, a meteorologist with the National Weather Service in Spokane.

By Wednesday night, the temperatures in Spokane are forecast to drop into the mid-20s under mostly clear skies. That will be followed by more overnight lows in the mid- to upper-20s on Thursday and again on Friday.

The area also experienced a light rain on Saturday around sunset. Koch said there will be a roughly 20 percent chance of rain on Tuesday and Wednesday, but the end of the week should be dry across most of the region.

Drivers should be wary of snow on the Stevens, Sherman and Lookout mountain passes, though it probably won’t stick on the roadways for long, Koch said.

The weather “changes very quickly as we go from late October to early November,” Koch said. “It cools off very quickly this time of year.”