Mount Si Weather Forecast

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Sun morning, min 10°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 6mm), mostly falling on Fri afternoon. Very mild (max 16°C on Wed afternoon, min 4°C on Fri afternoon). Winds increasing (calm on Thu night, strong winds from the WSW by Fri afternoon).

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.