– Lat/Long: 47.51° N 121.74° W
Mount Si
Weather Forecast, United StatesIssued: 3 pm Tue 02 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Tue 02 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Tue 02 Dec Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryA dusting of snow giving way to moderate rain (total 18mm) heaviest on Fri morning. Freeze-thaw conditions (max 4°C on Fri morning, min -1°C on Tue afternoon). Mainly near gales. | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Sat morning will be washed away by heavy rain (total 27mm) on Sun morning. Freeze-thaw conditions (max 5°C on Sun morning, min 0°C on Sat morning). Winds increasing (light winds from the SW on Sat afternoon, gales from the WSW by Sun morning). | ||||||||||||||||
Tue 2 | Wednesday 3 | Thursday 4 | Friday 5 | Saturday 6 | Sunday 7 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  | |  |  |  |  | | | | |  | | |
some clouds | some clouds | some clouds | cloudy | cloudy | light snow | light snow | mod. rain | mod. rain | heavy rain | light snow | light snow | light snow | light snow | heavy rain | light rain | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | 3 | 1 | — | — | — | 2 | 3 | 1 | 2 | — | — | — | |
— | — | — | — | — | — | 3 | 8 | 7 | 10 | — | — | — | — | 12 | 5 | — | |
max°C | -1 | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 4 | 4 | 1 | 1 | 1 | 2 | 5 | 4 | 2 |
min°C | -1 | -1 | 0 | -1 | 0 | 1 | 2 | 3 | 4 | 3 | 1 | 0 | 1 | 1 | 4 | 3 | 1 |
-4 | -4 | -3 | -5 | -3 | -3 | -3 | -2 | -3 | -3 | -6 | -7 | -2 | -2 | -2 | -3 | -5 | |
1150 | 1300 | 1200 | 1150 | 1350 | 1450 | 1700 | 2000 | 2200 | 1900 | 1400 | 1300 | 1450 | 1550 | 2100 | 2000 | 1450 | |
Cloud base (m) | 550 | 550 | 2100 | 1700 | 450 | 500 | 400 | 400 | 400 | 400 | 450 | 400 | 400 | 550 | 450 | 400 | 650 |
 | — | — | 7:35 | — | — | 7:37 | — | — | 7:37 | — | — | 7:39 | — | — | 7:39 | — | — |
 | 4:16 | — | — | 4:16 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: A dusting of snow giving way to moderate rain (total 18mm) heaviest on Fri morning. Freeze-thaw conditions (max 4°C on Fri morning, min -1°C on Tue afternoon). Mainly near gales.
Mount Si Weather (Days 3-6):
A light covering of new snow mostly falling on Sat morning will be washed away by heavy rain (total 27mm) on Sun morning. Freeze-thaw conditions (max 5°C on Sun morning, min 0°C on Sat morning). Winds increasing (light winds from the SW on Sat afternoon, gales from the WSW by Sun morning).
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 |  | ||||
| |||||
SHIP1365 | |||||
SHIP8600 |
* 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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