Forecasters say showers are brewing in the foothills west of Denver Friday afternoon and will roll through the city and Front Range as the day continues.

“Mostly, we’ll probably get some rain showers and a little lightning and thunder,” said Robert Koopmeiners, a meteorologist for the National Weather Service in Boulder.

The chance of precipitation in Denver is between 40 and 50 percent, he said.

Koopmeiners said while hail and gusty winds are possible, they aren’t likely to be damaging or strong because the summer’s strong convection season has passed.

Forecasters say some mountain areas could get up to three inches of snow as storm systems pass through the state. Most accumulations are expected above timberline.

The overnight low Friday is expected to be 49 degrees in Denver, the weather service says.

There is 30 percent chance of rain Saturday in the city with a high of 69 degrees expected. Forecasters are calling for a slight chance of thunderstorms.

On Sunday, the temperatures are expected to be ideal for an afternoon football game — topping out around 68 degrees — as the Broncos face the Vikings at home. Skies are forecast to be partly sunny.

Kirk Mitchell: 303-954-1206, kmitchell@denverpost.com or @kirkmitchell or denverpost.com/coldcases