– Lat/Long: 47.51° N 121.74° W
Mount Si Weather Forecast
Cascade Range · United StatesIssued: 9 pm Tue 03 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Tue 03 Nov Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Mild temperatures (max 7°C on Wed morning, min 2°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the SW by Wed night). | Days 5–7 Weather SummaryModerate rain (total 15mm) heaviest on Sat night, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 12°C on Sat morning, min 0°C on Sun afternoon). Winds decreasing (near gales from the SW on Sat night, calm by Sun night). | |||||||||||||||
Wednesday 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  | | |  |  | |  |  | | | |
clear | clear | light rain | rain shwrs | light rain | light rain | some clouds | light rain | light rain | mod. rain | some clouds | some clouds | snow shwrs | snow shwrs | some clouds | some clouds | |
Cloud base (m) | 9250 | 2750 | 450 | 500 | 550 | 3500 | 2650 | 1550 | 450 | 700 | 1550 | 650 | 850 | |||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — |
mm | — | — | 0.1 | 6 | 1.4 | 0.4 | — | 0.6 | 0.3 | 6 | — | — | 9 | — | — | — |
max °C | 6 | 7 | 6 | 4 | 3 | 3 | 5 | 6 | 7 | 8 | 12 | 12 | 10 | 1 | 0 | 4 |
min °C | 6 | 7 | 4 | 2 | 3 | 3 | 3 | 5 | 7 | 6 | 10 | 12 | 1 | 1 | 0 | 1 |
chill °C | 6 | 6 | 0 | -4 | -3 | 0 | 1 | 1 | 3 | 2 | 9 | 10 | -6 | -6 | -6 | 1 |
Freezing level m | 2800 | 2700 | 2250 | 1700 | 1650 | 1700 | 2550 | 2500 | 2900 | 2800 | 3200 | 3150 | 1800 | 1350 | 1300 | 1850 |
 | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | — | 4:44 | — | — | 4:43 | — | — | 4:42 | — | — | 4:39 | — | — | 4:38 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Light rain (total 9mm), mostly falling on Wed night. Mild temperatures (max 7°C on Wed morning, min 2°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the SW by Wed night).
Mount Si Weather (Days 3-6):
Moderate rain (total 15mm) heaviest on Sat night, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 12°C on Sat morning, min 0°C on Sun afternoon). Winds decreasing (near gales from the SW on Sat night, calm by Sun 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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