– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 10 am Sat 24 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sat 24 Oct Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 2mm), mostly falling on Mon morning. Mild temperatures (max 7°C on Sat night, min 2°C on Mon night). Wind will be generally light. | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 2°C on Tue morning, min -3°C on Thu night). Winds decreasing (strong winds from the SW on Tue night, calm by Thu night). | |||||||||||||||||
Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  | | | | |  |  | |  | | | | |
some clouds | cloudy | some clouds | light rain | light rain | some clouds | rain shwrs | rain shwrs | some clouds | some clouds | cloudy | snow shwrs | light snow | light snow | light snow | light snow | light snow | some clouds | |
Cloud base (m) | 2650 | 3000 | 2650 | 2450 | 7200 | 2300 | 600 | 900 | 400 | 700 | 550 | 450 | 400 | 400 | 400 | 450 | 400 | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | 4 | 1 | 3 | 4 | 3 | 2 | — |
mm | — | — | — | 0.6 | 0.6 | — | 0.6 | 0.3 | — | — | — | — | — | — | — | — | — | — |
max °C | 6 | 6 | 7 | 4 | 5 | 6 | 4 | 4 | 3 | 2 | 2 | 1 | 0 | 0 | 0 | -2 | -2 | -2 |
min °C | 5 | 6 | 5 | 3 | 5 | 5 | 4 | 3 | 2 | 1 | 1 | 0 | 0 | 0 | -1 | -2 | -2 | -3 |
chill °C | 3 | 5 | 2 | 0 | 2 | 3 | 4 | 1 | 0 | -4 | -5 | -7 | -5 | -5 | -7 | -8 | -8 | -3 |
Freezing level m | 2400 | 2400 | 2400 | 1950 | 2100 | 2250 | 2000 | 1750 | 1650 | 1450 | 1400 | 1300 | 1250 | 1250 | 1150 | 1000 | 1050 | 900 |
 | 7:37 | — | — | 7:39 | — | — | 7:41 | — | — | 7:41 | — | — | 7:43 | — | — | 7:45 | — | — |
 | — | 6:02 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:55 | — | — | 5:53 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Light rain (total 2mm), mostly falling on Mon morning. Mild temperatures (max 7°C on Sat night, min 2°C on Mon night). Wind will be generally light.
Mount Si Weather (Days 3-6):
A moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 2°C on Tue morning, min -3°C on Thu night). Winds decreasing (strong winds from the SW on Tue night, calm by Thu night).
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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
 | |||||
Seattl / oeing Airport |  | ||||
| |||||
BUOY-EBSW1 | |||||
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.
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