Up to 10 inches of snow could fall over western Colorado Tuesday and Wednesday nights, with heaviest accumulations expected in Grand Junction and Wolf Creek Pass, according to the National Weather Service.
In El Paso County, Pikes Peak may see lighter snowfall Tuesday and Wednesday nights, meteorologist John Kalina said.
Freezing drizzle and thick fog made driving difficult on the Front Range for morning commuters, from Fort Collins to Castle Rock and in most of El Paso County, including Colorado Springs.
"A frontal boundary passed through last night and the wake of that brought cooler moisture and low clouds formed," Kalina said. "It should start dissipating by the afternoon, but the clous will likely return Tuesday night."
Looking ahead in the week, Kalina predicted dry but chilly conditions for Thursday's Halloween activities. Temperatures will reach a high at mid 50s in the afternoon, beginning to drop by 6 p.m. to the lower 50s. By 8 p.m. temperatures will have dipped into the mid 40s, then a solid 40 degrees or upper 30s by 10 p.m.