Mount Si Weather Forecast

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 16°C on Wed night, min 0°C on Fri night). Winds decreasing (strong winds from the WSW on Fri morning, calm by Sat morning).

Mount Si Weather (Days 3-6):

Moderate rain (total 12mm), heaviest on Tue afternoon. Very mild (max 10°C on Mon afternoon, min 3°C on Sat night). Wind will be generally light.

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.