| NWS Forecast for: Mount St Helens WA Issued by: National Weather Service Portland, OR Last Update: 5:41 pm PDT Oct 6, 2026 | |
| Tonight: Clear, with a low around 49. Calm wind becoming northwest 5 to 9 mph in the evening. Wednesday: Sunny, with a high near 63. North wind 5 to 8 mph becoming calm in the morning. Wednesday Night: Clear, with a low around 51. Light north wind increasing to 5 to 10 mph in the evening. Thursday: Sunny, with a high near 63. North wind 5 to 10 mph becoming light and variable in the morning. Thursday Night: Mostly clear, with a low around 45. Calm wind becoming northwest around 6 mph after midnight. Friday: A 50 percent chance of showers, mainly after 11am. Partly sunny, with a high near 46. Friday Night: A chance of rain and snow before 2am, then a slight chance of snow. Mostly cloudy, with a low around 35. Chance of precipitation is 40%. Little or no snow accumulation expected. Saturday: A chance of rain and snow after 11am. Partly sunny, with a high near 38. Saturday Night: Mostly cloudy, with a low around 33. Sunday: Mostly sunny, with a high near 43. Sunday Night: Mostly clear, with a low around 33. Columbus Day: Sunny, with a high near 45. Monday Night: Mostly clear, with a low around 35. Tuesday: A chance of rain. Snow level 6100 feet rising to 6900 feet in the afternoon. Mostly sunny, with a high near 46. | |
| Mount St Helens WA 46.21°N 122.15°W (Elev. 5259 ft) | |
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