Here's a detailed 10-day weather forecast for Whistler Blackcomb, including temperature, precipitation, and avalanche risk assessments. This information is crucial for planning your trip and staying safe on the slopes.
Whistler Blackcomb. Source: snowbrains.com
General Weather Overview
The forecast indicates a mix of cloudy and partly cloudy days with chances of snow and rain-snow mix. Temperatures will generally range from the mid-20s to high 30s Fahrenheit. Winds will be light and variable.
Detailed Daily Forecast
Here's a breakdown of the weather forecast for each day:
- Sun, Dec 28: Mostly cloudy with a slight chance of rain-snow mix. High around 27F.
- Mon, Dec 29: Mostly cloudy. High around 35F.
- Tue, Dec 30: Partly cloudy. High around 38F.
- Wed, Dec 31: Mostly cloudy with a slight chance of rain-snow mix. High around 38F.
- Thu, Jan 1: Cloudy with a chance of rain-snow mix. High around 39F.
- Fri, Jan 2: Mostly cloudy with probable rain-snow mix. High around 37F.
- Sat, Jan 3: Partly cloudy with probable rain-snow mix. High around 35F.
- Sun, Jan 4: Cloudy with a chance of snow. High around 33F.
- Mon, Jan 5: Cloudy with probable snow. High around 33F.
- Tue, Jan 6: Cloudy with a chance of snow. High around 33F.
Nighttime temperatures will generally be in the 20s to low 30s Fahrenheit with similar precipitation chances.
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Avalanche Conditions
It is crucial to be aware of avalanche conditions, especially in alpine and treeline areas. Here's a summary of the avalanche risk for different regions:
Issued at: Sat Dec 27, 2025 16:00 PST Valid Until Sun Dec 28, 2025 16:00 PST
Whistler Area
Recent storm snow has buried various surfaces including a surface hoar layer in sheltered terrain features. Watch for signs of instability and approach steep slopes with caution.
Danger Ratings:
- Alpine: Moderate
- Treeline: Moderate
- Below Treeline: Low
Problems:
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- Storm Slab: Recent storm snow coupled with moderate to strong winds continue to keep storm slabs primed for human triggering. Recent avalanche activity suggest the new snow needs time to settle and bond to previous surfaces.
Terrain and Travel Advice:
- Be especially cautious as you transition into wind-affected terrain.
- Use small, low consequence slopes to test the bond of the new snow.
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
- Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
Sky Pilot Area
Cold conditions are keeping storm slabs reactive for longer, especially at upper elevations. Back off of steep terrain if you notice signs of instability like cracks in the snow surface.
Danger Ratings:
- Alpine: Moderate
- Treeline: Moderate
- Below Treeline: Low
Problems:
- Storm Slab: Recent storm snow and moderate to strong winds have formed storm slabs that remain possible to human trigger on Sunday. Danger will be greatest in open, higher elevation terrain.
Terrain and Travel Advice:
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- Start with conservative terrain and watch for signs of instability.
- Investigate the bond of the recent snow before committing to your line.
- Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
Duffey Area
Wind slabs may be found in atypical locations due to reverse loading from northerly winds. Monitor for signs of instability, and avoid committing to steep slopes if the snow feels dense.
Danger Ratings:
- Alpine: Moderate
- Treeline: Low
- Below Treeline: Low
Problems:
- Wind Slab: Recent storm snow and moderate to strong winds that have varied in direction have developed wind slabs on most aspects at treeline and above. Human-triggered wind slabs remain possible and are more likely in open terrain features.
Terrain and Travel Advice:
- Seek out sheltered terrain where new snow hasn't been affected by wind.
- Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
Additional Safety Tips
- Always check the latest avalanche forecast before heading out.
- Carry appropriate avalanche safety gear (beacon, shovel, probe) and know how to use it.
- Travel with a partner and communicate your plans.
- Be aware of changing weather conditions and adjust your plans accordingly.
Confidence: moderate
Uncertainty: is due to how quickly the snowpack will recover and gain strength.
Basic Avalanche Theory & Identifying Avalanche Terrain
Always be aware of avalanche conditions. Source: Vail.com
10-Day Weather Table
Here's a table summarizing the 10-day weather forecast for Whistler Blackcomb:
| Date | Day Temperature | Night Temperature | Conditions | Precipitation Chance |
|---|---|---|---|---|
| Sun, Dec 28 | 27°F | 25°F | Mostly cloudy, slight chance of rain-snow mix | 25% |
| Mon, Dec 29 | 35°F | 29°F | Mostly cloudy | - |
| Tue, Dec 30 | 38°F | 29°F | Partly cloudy | - |
| Wed, Dec 31 | 38°F | 31°F | Mostly cloudy, slight chance of rain-snow mix | 25% |
| Thu, Jan 1 | 39°F | 32°F | Cloudy, chance of rain-snow mix | 50% |
| Fri, Jan 2 | 37°F | 31°F | Mostly cloudy, probable rain-snow mix | 75% |
| Sat, Jan 3 | 35°F | 24°F | Partly cloudy, probable rain-snow mix | 80% |
| Sun, Jan 4 | 33°F | 26°F | Cloudy, chance of snow | 50% |
| Mon, Jan 5 | 33°F | 27°F | Cloudy, probable snow | 65% |
| Tue, Jan 6 | 33°F | 28°F | Cloudy, chance of snow | 60% |