Atmospheric conditions from valley to peak
Mount Saint Helens stands in southwestern Washington in the Cascade Range, and its dramatic volcanic shape makes it one of the most memorable peaks in the United States. Hikers come for the stark, changing landscape and the wide views across the surrounding forests and valleys, with the mountain’s 1980 eruption still visible in the terrain. The best time to hike is usually late summer into early fall, when most snow has melted, trails are steadier, and the weather is generally drier and clearer.
Summit temperature from 42° to 54°, but feels colder because of the wind. Foggy in the early morning, clearing up by evening.
Easily find peaks on the map and by GPS

Plan your mountain trip with maximum precision

Forecast for up to 5 different elevations of each peak

Plan ahead and see how the forecast affects your plans

Mountain weather can be unpredictable. Always pay attention to conditions around you and be prepared for sudden weather changes.