More than half of Monday morning's flights out of Colorado Springs Airport were canceled after a dense fog advisory was in effect until 8 a.m., according to the National Weather Service.
With visibility conditions limited to one mile, the airport's website showed canceled departures to Chicago, Seattle, San Francisco, Houston and Denver.
"There may still be some patches of thick fog throughout the morning," meteorologist Larry Walrod said. "But it will gradually improve."
Cloudy conditions could last last through the day, with 50 percent chance of snow, Walrod said. Up to half-an-inch could fall during the day, with a second half-inch possibly falling mainly before 1 a.m.
Temperatures will be in the mid-to-upper 20s, dropping to the mid-teens Monday night, according to the weather service.
Daytime temperatures are expected to rise starting Tuesday through the rest of the week, possibly reaching as high as 55 degrees on Wednesday with clear conditions and sunny skies, Walrod said.
A hazardous weather outlook was issued for higher elevations in El Paso, Fremont and Teller counties, with up to seven inches of snow predicted for the central mountains with strong winds up to 60 mph, the weather service announced.