Mount Si
Weather Forecast, United States

Issued: 4 pm Mon 23 Mar Local Time

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Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 29mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Wed afternoon. Freeze-thaw conditions (max 9°C on Mon afternoon, min -1°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the SSW by Tue afternoon).

Mount Si Weather (Days 3-6):

Light rain (total 2mm), mostly falling on Thu afternoon. Freeze-thaw conditions (max 14°C on Sun morning, min -1°C on Thu night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 500 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.