The waves of snow that fell across Denver Thursday were expected to diminish Friday morning, but the roads could be slick for commuters, a weather forecaster said.

The National Weather Service in Boulder said to expect a 40% chance of snow across Denver on Friday with a high temperature reaching about 34 degrees.

That’s about 10 degrees colder than the average high for Jan. 9 in Denver, according to weather service records.

Russell Danielson, a meteorologist with the National Weather Service in Boulder, said to expect snow to tail off around 8 a.m. across the metro area.

“Especially downtown and westward, those area might have some slick roadways,” Danielson said. “Just allow extra time for your commute. If you can delay it a little bit until after 8 or 9 a.m., you should be better off.”

Danielson said Denver motorists should drive with caution Friday morning and give the vehicle in front of them additional space.

The most significant travel impacts from this storm were likely to come from the winds, Danielson said, which were expected to pick up Friday morning and could blow snow and make visibility difficult.

“I-70 out east toward Limon could see some blowing snow and travel impacts,” Danielson said. He added that I-25 between Denver and Colorado Springs, and the Palmer Divide could also be trouble spots for travelers.

Winds could gust up to 45 mph on Friday, Danielson said.

Areas in the western part of the metro area saw about 4 to 6 inches of accumulation from this storm. That includes places such as Arvada, Rocky Flats and Golden. The southern part of the metro area, such as Castle Rock, saw 3 to 4 inches, according to weather service observations.

Denver officially saw 1.1 inch of accumulation at its monitoring station at Denver International Airport, the weather service said.

Winter weather advisories that were in effect across Colorado, including in the northern and central mountains, were set to expire at 11 a.m. Friday, Danielson said.

Once the snow moves out Friday morning, Denver is expected to see another stretch of unseasonably warm, dry weather, forecasters predict.

“We dry out for quite a few days after that,” Danielson said.

The sunny weather is expected to return, and the high is forecast to reach 44 degrees Saturday, 53 on Sunday, 57 on Monday and 55 on Tuesday.