Denver, Colorado – Drivers crossing Colorado’s high-elevation passes could face slick roads and reduced visibility late Monday into early Wednesday as the season’s first impactful mountain snow moves in. The National Weather Service in Boulder warns that snow levels may dip as low as 9,000 feet overnight Monday, especially in northern mountain zones.
According to NWS Boulder, the heaviest precipitation is expected between late Monday night and midday Tuesday. Accumulations will primarily stick above 10,500 feet, but even areas near 9,000 feet — like portions of Trail Ridge Road and the Eisenhower Tunnel on I-70 — could see light coverage. Travel on Berthoud Pass, Loveland Pass, and high alpine roads will be most affected.
Hazardous alpine conditions are likely for backcountry users as well. Avalanche risk remains low this early in the season, but visibility and traction could make hiking and overnight camping dangerous above tree line. Drivers should carry traction devices and check real-time road updates at COTrip.org.
Snow levels will rise briefly Tuesday afternoon before dropping again early Wednesday. A second round of lighter snow could hit Tuesday night.
More alerts are possible as confidence grows in storm tracks and totals.
