Observation Peak Trail, WA 7-Day Night Weather Forecast
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Observation Peak Trail, WA Weather Forecast


Observation Peak Trail, WA Weather Forecast Date: 1128 PM PDT Wed Aug 26 2026
The area/counties/county of: South Washington Cascades, including the cities of: Mt. St. Helens, Larch Mountain, and Indian Heaven Wilderness.or toggle through each period.
Overnight... Mostly cloudy. Free air freezing level 14000 feet. Winds light.
Thursday... Partly sunny in the morning, then clearing. Free air freezing level 13000 feet, Decreasing to free air freezing level 12000 feet in the afternoon. Southwest wind 10 to 15 mph.
Thursday Night... Partly cloudy. Free air freezing level 13000 feet, Decreasing to free air freezing level 12000 feet after midnight. Northwest wind 5 to 10 mph.
Friday... Partly sunny in the morning, then clearing. Free air freezing level 12000 feet. Northwest wind 5 to 10 mph.
Friday Night... Partly cloudy. Free air freezing level 12000 feet, Decreasing to free air freezing level 11000 feet after midnight. West wind 5 to 10 mph.
Saturday... Mostly cloudy in the morning, then becoming mostly sunny. A 50% chance of rain showers. Snow level 6500 feet.
Saturday Night... Partly cloudy. Free air freezing level 11000 feet.
Sunday... Mostly sunny. Free air freezing level 12000 feet.
Sunday Night... Partly cloudy in the evening, then becoming mostly cloudy. Free air freezing level 12000 feet.
Monday... Mostly sunny with a 20% chance of rain. Snow level above 8000 feet.
Monday Night... Partly cloudy in the evening, then becoming mostly cloudy. A 20% chance of rain. Snow level above 8000 feet.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. A 50% chance of rain. Snow level 8000 feet.
Tuesday Night... Mostly cloudy with a 50% chance of rain. Snow level 8000 feet.
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