A dry, mild winter in the Colorado high country tricks drivers into a false sense of security. With bare valleys and mostly dry pavement, it is easy to assume winter driving hazards are gone. They aren’t.
Historically, March and April are Colorado’s snowiest months. A lack of early-season snow simply means drivers are less prepared when the big spring storms finally hit.
Why Dry Roads Build False Confidence
As we discussed in our recent post on dry winter pavement leads to dangerous speeding, weeks of clear weather drastically change driving habits. Drivers push the speed limit, tailgate, and stop anticipating ice.
When a heavy spring squall hits, road conditions deteriorate in minutes. Drivers stuck in a “dry pavement” mindset get caught off guard, causing a massive spike in slide-offs and collisions.
I-70 Microclimates: The Vail Pass to Glenwood Canyon Trap
Spring storms in Eagle County are rarely uniform. You can easily leave a perfectly dry, sunny driveway in Eagle or Gypsum, only to hit a total whiteout 30 minutes later.
Elevation dictates the weather here. Pockets of heavy, accumulating snow frequently isolate specific stretches of I-70—like the summit of Vail Pass or the shaded, twisting curves of Glenwood Canyon—while the valley floor remains completely dry. This localized weather traps drivers who assume the clear skies at lower elevations extend through the entire I-70 corridor. Always check CDOT cameras before heading up the pass.
The Freeze-Thaw Black Ice Danger
You don’t need a fresh snowstorm to hit ice. Mild spring weather creates a unique daily hazard.
Warm afternoon sun melts the remaining roadside snowbanks. This water trickles across the highway. The moment the sun dips behind the peaks, temperatures crash. That runoff instantly turns into invisible sheets of black ice. This is especially dangerous in deep stretches like Glenwood Canyon, where the sun disappears early in the afternoon.
Commercial Drivers: The I-70 Chain Law is Still Active
Passenger cars aren’t the only vehicles getting caught unprepared. Commercial drivers must follow strict legal obligations well into the spring.
Even if the sky is blue and the asphalt is dry, the Colorado Chain Law requires all commercial vehicles traveling the I-70 mountain corridor to carry sufficient chains from September 1st through May 31st. Because late-season storms drop heavy snow with zero warning, the state does not lift this requirement early during a low-snow year. Failing to carry chains can result in hefty fines and dangerous delays.
When Should I Remove My Snow Tires in Colorado?
Do not schedule your seasonal tire changeover just because February was warm. Wait until late May.
Spring snow in the Rockies is incredibly heavy, wet, and slick. Hitting a sudden April whiteout with summer tires or worn all-season tread puts you in the ditch and endangers the plow crews trying to clear the road.
Stranded? What to Do Next
Mountain weather changes fast. Whether you hit an unexpected patch of black ice in Glenwood Canyon, slid off Vail Pass, or need a commercial chain-up assist, help is available.
If your vehicle slides off the road or becomes disabled:
- Stay in your vehicle. (Walking on an icy highway is deadly).
- Keep your seatbelt on.
- Call for professional recovery.
Call West Vail Towing at (970) 476-3394. We are based out of the West Vail Shell (yes, we are one and the same business!), and our team has been helping mountain drivers safely navigate these roads since 1970. When you call, look out for our distinctive white or bright yellow tow trucks featuring the Shell logo on the doors. Our local Eagle County recovery experts are available 24/7 to get you back on safe pavement.
