– Lat/Long: 47.51° N 121.74° W
Mount Si
Weather Forecast, United StatesIssued: 3 am Sun 23 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sun 23 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sun 23 Nov Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 11mm), heaviest on Sun morning giving way to a moderate fall of snow, heaviest on Tue afternoon. Freeze-thaw conditions (max 3°C on Sun morning, min -3°C on Sun night). Winds decreasing (fresh winds from the SW on Sun morning, calm by Mon night). | Days 4–6 Weather SummaryMild with moderate rain (total 16mm) on Wed night, Becoming colder with a light covering of snow, mostly falling on Thu afternoon. Freeze-thaw conditions (max 4°C on Wed morning, min -1°C on Fri night). Wind will be generally light. | |||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | |  |  |  | |  | | | | |  | | |
mod. rain | cloudy | snow shwrs | some clouds | light snow | cloudy | light snow | mod. snow | light snow | light rain | light rain | heavy rain | light rain | light snow | light snow | some clouds | clear | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | 5 | — | 1 | — | 1 | 6 | 4 | — | — | — | — | 2 | 1 | — | — | 2 | |
8 | — | — | — | — | — | — | — | 3 | 0.8 | 0.7 | 10 | 4 | — | — | — | — | — | |
max°C | 3 | 1 | -2 | -2 | -2 | -1 | 1 | 1 | 3 | 4 | 3 | 3 | 3 | 2 | 1 | 0 | 1 | -1 |
min°C | 2 | 0 | -3 | -3 | -3 | -3 | -2 | -1 | 1 | 4 | 3 | 2 | 2 | 1 | 1 | 0 | 0 | -1 |
-4 | -5 | -10 | -9 | -8 | -7 | -8 | -6 | -4 | -1 | -1 | -1 | 0 | 1 | 1 | 0 | -2 | -5 | |
1800 | 1400 | 950 | 900 | 950 | 850 | 1400 | 1100 | 1750 | 2050 | 2000 | 1750 | 1850 | 1650 | 1450 | 1300 | 1400 | 1050 | |
Cloud base (m) | 400 | 400 | 1750 | 550 | 750 | 600 | 2300 | 950 | 450 | 450 | 500 | 400 | 450 | 400 | 450 | 450 | 600 | 800 |
 | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — |
 | — | 4:22 | — | — | 4:22 | — | — | 4:21 | — | — | 4:20 | — | — | 4:20 | — | — | 4:19 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Moderate rain (total 11mm), heaviest on Sun morning giving way to a moderate fall of snow, heaviest on Tue afternoon. Freeze-thaw conditions (max 3°C on Sun morning, min -3°C on Sun night). Winds decreasing (fresh winds from the SW on Sun morning, calm by Mon night).
Mount Si Weather (Days 3-6):
Mild with moderate rain (total 16mm) on Wed night, Becoming colder with a light covering of snow, mostly falling on Thu afternoon. Freeze-thaw conditions (max 4°C on Wed morning, min -1°C on Fri 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
 | |||||
| |||||
SHIP6106 | |||||
SHIP3516 | |||||
SHIP8445 | |||||
SHIP3486 | |||||
SHIP5939 |
* 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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