North Cascades National Park, WA

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Johannesburg Mountain and Cascade Pass in North Cascades National Park
Johannesburg Mountain and Cascade Pass in North Cascades National Park. Photo by Jeffhollett, via Wikimedia Commons, licensed under CC BY-SA 4.0.

Today’s Forecast:

🌤
54°F
High: 54° | Low: 37°
Current Temperature
Station: HZCW1
Observed at: 8:23 pm CDT on 9/26/26
Wind: 1 mph | Humidity: 57%
Tonight:Partly cloudy, with a low around 37. East wind 3 to 14 mph.
Sunday:Mostly sunny. High near 54, with temperatures falling to around 52 in the afternoon. North northeast wind 2 to 13 mph.
Sunday Night:Partly cloudy, with a low around 38. Southwest wind around 8 mph.
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Today’s Report:

🥾 Hiking

Excellent
  94 /100

Excellent for hiking. High near 54°F. Light wind (12 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 90/100
Excellent for hiking. High near 52°F. Low rain risk (5%). Light wind (13 mph).

⛺ Camping

Excellent
  100 /100

Excellent for camping. High near 54°F. Light wind (12 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for camping. High near 52°F. Low rain risk (5%). Light wind (13 mph).

🎪 Outdoor Events / Activities

Good
  79 /100

Good for outdoor events / activities. High near 54°F. Light wind (12 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Good 74/100
Good for outdoor events / activities. High near 52°F. Low rain risk (5%). Light wind (13 mph).

About North Cascades National Park

North Cascades National Park is a Washington destination for rugged park interior, Cascade Pass approaches, remote camping, glaciated peaks, and Highway 20 access.

Make the Most of a North Cascades National Park Day

Check seasonal roads, trailheads, smoke, snow, and backcountry notices. Distances and limited services make conservative turnarounds especially important.

Weather Tips for North Cascades National Park

  • 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.
  • Check overnight lows, wet ground, fire rules, drainage, and the nearest substantial shelter before settling into camp.
  • 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:

  • Newhalem
  • Marblemount
  • Cascade Pass
  • Ross Lake National Recreation Area
  • Stehekin Valley
  • Skagit River
  • Washington Pass

Plan Around the Conditions

Use the forecast to choose the best version of a North Cascades National Park 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 North Cascades National Park

🌤
54°F
High: 54° | Low: 37°
Current Temperature
Station: HZCW1
Observed at: 8:23 pm CDT on 9/26/26
Wind: 1 mph | Humidity: 57%
Sun ⛅
54° 38°
0%
Mon ⛅
52° 44°
5%
Tue 🌧
48° 44°
88%
Wed 🌧
50° 43°
31%
Thu 🌧
53° 43°
25%
Fri 🌧
52° 42°
15%
Sat ☀
57° --°
1%

7-Day High Temperature Trend

54° Sun 52° Mon 48° Tue 50° Wed 53° Thu 52° Fri 57° Sat

7-Day Low Temperature Trend

38° Sun 44° Mon 44° Tue 43° Wed 43° Thu 42° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 90 Sun 80 Mon 18 Tue 65 Wed 85 Thu 80 Fri 100 Sat
Forecast data from the National Weather Service  |  Last Updated: September 26, 2026 10:37 pm CDT

North Cascades National Park Weather by Season

Winter

Winter at North Cascades National Park 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 North Cascades National Park 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 North Cascades National Park 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 North Cascades National Park 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: generally around the upper 30s to mid-40s depending on elevation, using the relevant local or regional elevation context.
  • Annual snowfall: commonly 150–400 inches in favored high 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 by total precipitation.
  • Driest season: July and August.
  • Best outdoor window: July through September for the broadest high-country access.