NWS Forecast for: Mount St Helens WA
Issued by: National Weather Service Portland, OR
Last Update: 6:01 am PDT May 18, 2021


Today: Snow showers. High near -2. Breezy, with a west wind 24 to 26 km/h, with gusts as high as 39 km/h. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 7 centimeters possible.

Tonight: Snow showers likely before 11pm. Mostly cloudy, with a low around -5. Breezy, with a west northwest wind 21 to 26 km/h decreasing to 14 to 19 km/h in the evening. Winds could gust as high as 39 km/h. Chance of precipitation is 60%. New snow accumulation of 1 to 2 centimeters possible.

Wednesday: Snow showers, mainly after 11am. High near -1. West northwest wind 11 to 21 km/h, with gusts as high as 32 km/h. Chance of precipitation is 80%. New snow accumulation of around a centimeter possible.

Wednesday Night: A 40 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around -3. Blustery, with a north northwest wind 22 to 27 km/h decreasing to 16 to 21 km/h after midnight. Winds could gust as high as 47 km/h. New snow accumulation of less than a half centimeter possible.

Thursday: Snow showers likely, mainly after 11am. Some thunder is also possible. Mostly cloudy, with a high near 2. West northwest wind 18 to 21 km/h, with gusts as high as 32 km/h. Chance of precipitation is 60%. New snow accumulation of less than a half centimeter possible.

Thursday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around -1. Blustery. New snow accumulation of less than a half centimeter possible.

Friday: Snow showers likely before 2pm, then rain showers likely. Partly sunny, with a high near 6. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday Night: A slight chance of rain showers before 8pm, then a slight chance of snow showers between 8pm and 11pm. Partly cloudy, with a low around 1.

Saturday: A slight chance of snow showers before 11am, then a slight chance of rain and snow showers between 11am and 2pm, then a slight chance of rain showers after 2pm. Mostly sunny, with a high near 9.

Saturday Night: A slight chance of showers. Partly cloudy, with a low around 3.

Sunday: A chance of showers. Partly sunny, with a high near 7.

Sunday Night: A slight chance of rain and snow showers. Mostly cloudy, with a low around 2.

Monday: A chance of rain and snow showers. Partly sunny, with a high near 8.



Mount St Helens WA
 46.18°N 122.18°W (Elev. 1891 m)

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