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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scope Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
The Coquihala Highway (BC-5) passes through high mountain terrain between Hope and Kamloops, so its weather can shift rapidly from clear to snowy or foggy within minutes, especially from autumn through spring.
What makes Coquihala weather unique?
The Coquihala summit sits at 1,244 metres elevation, which means winter conditions often arrive earlier and linger longer than in the surrounding valleys. Snowfall is common from October through April, and sudden whiteouts can reduce visibility to near zero. Even in summer, afternoon thunderstorms and dense fog at higher elevations are possible. The highway has designated chain-up areas and electronic message boards; checking the live forecast above before departure is the most reliable way to prepare for current conditions.
How do I prepare for driving this route?
Winter tires are mandatory on the Coquihala from October 1 to April 30, and chains are recommended when snow or ice is present. Pack extra warm clothing, food, water, and a fully charged phone because cell coverage can be spotty in the higher sections. Speed limits are reduced in poor weather, and the highway is closed occasionally during severe storms. For broader context on mountain-pass travel, see our Canada weather hub or check Vancouver weather and Calgary weather for trip-planning at either end of the route.
Is the Coquihala open year-round?
Yes, the highway operates all year, but it can close temporarily during extreme winter storms or avalanche control work. Always check the live forecast and DriveBC alerts before heading out.
Why is the Coquihala often colder than Vancouver?
The route climbs from near sea level at Hope to over 1,200 metres, so temperatures drop roughly 6–8°C per 1,000 metres of elevation gain. Snow is common even when Vancouver sees only rain.
What should I do if I hit a whiteout?
Slow down gradually, turn on full headlights and hazard lights, and pull into a rest area or chain-up bay if safe. Do not stop on the travel lane. Wait until visibility improves before proceeding.