– Lat/Long: 47.51° N 121.74° W
Mount Si
Weather Forecast, United StatesIssued: 3 am Sat 29 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sat 29 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sat 29 Nov Local Time
Updates in:
Update imminent hr min s
2 Mount Si Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 4°C on Sat morning, min -1°C on Sat afternoon). Wind will be generally light. | Days 4–6 Weather SummaryA dusting of snow giving way to moderate rain (total 11mm) heaviest on Thu night. Freeze-thaw conditions (max 5°C on Thu afternoon, min -2°C on Tue afternoon). Winds increasing (calm on Tue night, severe gales from the WSW by Thu night). | |||||||||||||||||
Saturday 29 | Sunday 30 | Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | | |  | | | | | | |  |  | | |
cloudy | some clouds | clear | some clouds | some clouds | some clouds | some clouds | cloudy | light snow | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | light snow | light rain | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | 3 | — | 1 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 8 | |
max°C | 4 | 1 | 0 | 1 | 1 | 2 | 2 | 2 | 0 | 0 | -1 | 0 | 0 | 0 | 2 | 1 | 5 | 5 |
min°C | 3 | -1 | -1 | 1 | 1 | 1 | 1 | 1 | 0 | -1 | -2 | -1 | -1 | -1 | -1 | 1 | 3 | 1 |
1 | -1 | -3 | 1 | -1 | -2 | -2 | -2 | -4 | -5 | -4 | -3 | -1 | -4 | -3 | -4 | -3 | -8 | |
2050 | 1500 | 950 | 1400 | 1650 | 3150 | 3300 | 2200 | 1250 | 1250 | 1050 | 1100 | 1150 | 1200 | 1450 | 1850 | 2150 | 2100 | |
Cloud base (m) | 5900 | 2650 | 550 | 6400 | 6300 | 2300 | 1950 | 700 | 450 | 500 | 550 | 450 | 650 | 1700 | 550 | 400 | 400 | |
 | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — |
 | — | 4:17 | — | — | 4:17 | — | — | 4:16 | — | — | 4:16 | — | — | 4:16 | — | — | 4:15 | — |
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Mount Si Weather (Days 0-3):
The weather forecast for Mount Si is: A dusting of new snow. Freeze-thaw conditions (max 4°C on Sat morning, min -1°C on Sat afternoon). Wind will be generally light.
Mount Si Weather (Days 3-6):
A dusting of snow giving way to moderate rain (total 11mm) heaviest on Thu night. Freeze-thaw conditions (max 5°C on Thu afternoon, min -2°C on Tue afternoon). Winds increasing (calm on Tue night, severe gales from the WSW 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 |  | ||||
 | |||||
SHIP8913 |
* 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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