| NWS Forecast for: Mount St Helens WA Issued by: National Weather Service Portland, OR Last Update: 11:42 am PDT May 15, 2026 | |
| This Afternoon: Snow before 2pm, then snow showers, mainly after 2pm. Some thunder is also possible. High near -1. Breezy, with a west southwest wind 24 to 26 km/h, with gusts as high as 40 km/h. Chance of precipitation is 80%. Total daytime snow accumulation of 3 to 7 centimeters possible. Tonight: Snow showers before 11pm, then snow after 11pm. The snow could be heavy at times. Some thunder is also possible. Low around -3. Breezy, with a west wind 27 to 29 km/h, with gusts as high as 47 km/h. Chance of precipitation is 90%. New snow accumulation of 7 to 11 centimeters possible. Saturday: Snow showers, mainly before 5pm, then snow likely after 5pm. Some thunder is also possible. High near -2. Breezy, with a west wind 27 to 32 km/h, with gusts as high as 45 km/h. Chance of precipitation is 90%. New snow accumulation of 5 to 9 centimeters possible. Saturday Night: Snow likely, mainly before 9pm. Mostly cloudy, with a low around -3. Blustery, with a west northwest wind 23 to 29 km/h, with gusts as high as 47 km/h. Chance of precipitation is 60%. New snow accumulation of around a centimeter possible. Sunday: Partly sunny, with a high near 3. Northwest wind 21 to 23 km/h, with gusts as high as 35 km/h. Sunday Night: Mostly cloudy, with a low around -2. Blustery. Monday: Partly sunny, with a high near 6. Breezy. Monday Night: Partly cloudy, with a low around 0. Breezy. Tuesday: Mostly sunny, with a high near 9. Tuesday Night: Partly cloudy, with a low around 1. Breezy. Wednesday: Mostly sunny, with a high near 11. Wednesday Night: Partly cloudy, with a low around 3. Breezy. Thursday: Mostly sunny, with a high near 12. Breezy. | |
| Mount St Helens WA 46.18°N 122.18°W (Elev. 6204 m) | |
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