– Lat/Long: 47.51° N 121.74° W
Mount Si
Weather Forecast, United StatesIssued: 9 am Thu 05 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Thu 05 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Thu 05 Mar Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 45mm), heaviest during Sat night. Mild temperatures (max 8°C on Fri night, min 3°C on Thu morning). Wind will be generally light. | Days 4–6 Weather SummaryModerate rain (total 16mm), heaviest on Sun morning giving way to a moderate fall of snow, heaviest on Mon afternoon. Freeze-thaw conditions (max 8°C on Sun morning, min -1°C on Mon night). Wind will be generally light. | |||||||||||||||||
Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  |  | | |  | | |  | |  |  | | | | |
light rain | light rain | light rain | light rain | mod. rain | mod. rain | light rain | light rain | heavy rain | mod. rain | mod. rain | rain shwrs | light rain | light snow | light snow | light snow | light snow | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 5 | 2 | 2 | 3 | |
1.8 | 1.3 | 5 | 3 | 7 | 9 | 0.8 | 4 | 13 | 8 | 6 | 0.9 | 1.8 | — | — | — | — | — | |
max °C | 4 | 4 | 4 | 6 | 6 | 8 | 8 | 8 | 8 | 8 | 6 | 3 | 3 | 1 | -1 | 1 | 1 | 0 |
min °C | 3 | 4 | 4 | 5 | 6 | 7 | 8 | 8 | 8 | 7 | 4 | 0 | 2 | 0 | -1 | 0 | 0 | -1 |
1 | 3 | 3 | 5 | 5 | 6 | 7 | 6 | 6 | 3 | 1 | -4 | -3 | -5 | -6 | -4 | -3 | -4 | |
1000 | 1100 | 1150 | 1550 | 1750 | 2300 | 2900 | 2750 | 2300 | 1800 | 1400 | 750 | 700 | 650 | 400 | 450 | 600 | 400 | |
Cloud base (m) | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 400 | 400 | 400 | 500 | 450 | 400 | 400 | 450 | 450 | 500 |
 | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 7:33 | — | — | 6:31 | — | — | 6:28 | — | — |
 | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 7:01 | — | — | 6:02 | — | — | 6:05 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: Heavy rain (total 45mm), heaviest during Sat night. Mild temperatures (max 8°C on Fri night, min 3°C on Thu morning). Wind will be generally light.
Mount Si Weather (Days 3-6):
Moderate rain (total 16mm), heaviest on Sun morning giving way to a moderate fall of snow, heaviest on Mon afternoon. Freeze-thaw conditions (max 8°C on Sun morning, min -1°C on Mon night). Wind will be generally light.
This table gives the weather forecast for Mount Si at the specific elevation of 500 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 |
|---|---|---|---|---|---|
 | |||||
 | |||||
SHIP6522 | |||||
SHIP3902 | |||||
SHIP3316 | |||||
SHIP8522 | |||||
SHIP2877 |
* 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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