Snoqualmie Pass, WA
Today’s Forecast:
Today’s Report:
Hiking
Use Caution for hiking. High near 46°F. Risk of rain later today (58%). Light wind (9 mph).
- Temp: Marginal weather factor
- Rain: Marginal weather factor
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Biking
Use Caution for biking. High near 46°F. Rain forecast later today (58%). Light wind (9 mph).
- Temp: Marginal weather factor
- Rain: Marginal weather factor
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Outdoor Events / Activities
Not Recommended for outdoor events / activities. High near 46°F. Rain forecast later today (58%). Light wind (9 mph). Temperatures outside comfort limits (46°F).
- Temp: Unfavorable weather factor
- Rain: Marginal weather factor
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
About Snoqualmie Pass
Snoqualmie Pass is a Washington destination for an Interstate 90 pass with lakes, trailheads, bike access, and a major winter recreation corridor.
Make the Most of a Snoqualmie Pass Day
Pass conditions can change quickly during storms. Check snow, chain requirements, trailhead access, fog, and avalanche-adjacent closures before departure.
Weather Tips for Snoqualmie Pass
- Compare valley and high-elevation forecasts because snow, wind, clouds, smoke, and temperature can change sharply with elevation.
- If thunder is possible, finish exposed viewpoints, ridges, golf, or event grounds early and keep substantial shelter close.
- After steady rain, favor paved or well-drained surfaces until natural trails recover.
- Summer smoke, winter access, shoulder-season closures, and shorter fall daylight can matter even during an otherwise mild forecast.
Nearby Towns and Areas
This page can also be useful when planning outdoor time near:
- Summit at Snoqualmie
- Hyak
- Gold Creek Pond
- Pacific Crest Trail
- Keechelus Lake
- Franklin Falls
- Alpental
Plan Around the Conditions
Use the forecast to choose the best version of a Snoqualmie Pass day. Match wind, precipitation, smoke, water conditions, trail surfaces, road access, temperature, and daylight to the activity that gives your group the safest and most comfortable plan.
7-Day Forecast for Snoqualmie Pass
Snoqualmie Pass Weather by Season
Winter
Winter at Snoqualmie Pass brings mountain snow, ice, short daylight, and changing road or trailhead access. Higher routes may close while lower valleys remain rainy, so check current transportation notices.
Spring
Spring around Snoqualmie Pass brings changing conditions, rising rivers, wet trails, and lingering mountain snow. Give muddy natural surfaces time to drain and avoid widening trails. Mountain and eastern thunderstorms become increasingly possible later in the season.
Summer
Summer at Snoqualmie Pass is usually the driest and most dependable season, but wildfire smoke, fire restrictions, heat, and afternoon thunderstorms can interrupt plans. Start exposed routes early and carry enough water. Dry vegetation makes local fire rules especially important.
Fall
Fall at Snoqualmie Pass brings cooler temperatures, shorter daylight, changing color, and the return of wetter weather west of the Cascades. Early snow or ice may reach upper roads before lower elevations. Check seasonal facility hours and allow extra time on busy event or salmon-viewing weekends.
Key Climate Data Points
- Annual average temperature: around 40–44°F at pass elevation, using the relevant local or regional elevation context.
- Annual snowfall: often 250–450 inches in favored pass terrain, with substantial year-to-year and elevation variation.
- Warmest months: July and August are normally warmest.
- Coolest months: December through February are typically coolest.
- Wettest season: November through January.
- Driest season: July and August.
- Best outdoor window: July through September for trails and biking; winter travel depends on pass conditions.