Mount Si
Weather Forecast, United States

Issued: 3 am Sat 06 Dec Local Time

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Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A moderate fall of snow heaviest on Sun night. Turning milder with heavy rain (total 36mm), heaviest during Mon morning. Freeze-thaw conditions (max 6°C on Mon afternoon, min -1°C on Mon night). Winds increasing (light winds from the SW on Sat night, severe gales from the WSW by Mon afternoon).

Mount Si Weather (Days 3-6):

Mild with moderate rain (total 15mm) on Tue afternoon, Becoming colder with a light covering of snow, mostly falling on Thu night. Freeze-thaw conditions (max 6°C on Thu night, min -4°C on Wed afternoon). Winds decreasing (severe gales from the SW on Tue afternoon, calm by Thu morning).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Si. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.