– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Fri 08 Dec Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 3 pm Fri 08 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Fri 08 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Sat afternoon. Becoming milder with drizzle, on Sun afternoon. Freeze-thaw conditions (max 2°C on Sat night, min -5°C on Fri afternoon). Winds increasing (calm on Fri afternoon, fresh winds from the SSE by Sat morning). | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Wed night. Freeze-thaw conditions (max 7°C on Tue night, min -3°C on Wed night). Wind will be generally light. | ||||||||||||||||
Fri 8 | Saturday 9 | Sunday 10 | Monday 11 | Tuesday 12 | Wednesday 13 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  |  | |  | | | | |  | | |
clear | some clouds | light snow | mod. snow | light snow | light snow | light snow | snow shwrs | some clouds | some clouds | clear | clear | clear | clear | some clouds | light rain | light snow | |
km/h | |||||||||||||||||
Wave Height Map |  |  |  |  |  |  | |||||||||||
— | — | 3 | 10 | 4 | 1.0 | 1.0 | 1.0 | — | — | — | — | — | — | — | — | 5 | |
— | — | — | — | 0.1 | — | 1.8 | — | — | — | — | — | — | — | — | 0.1 | — | |
max°C | -5 | 0 | 1 | -2 | 2 | 2 | 2 | 1 | 0 | 0 | 0 | 3 | 5 | 7 | 6 | 3 | -1 |
min°C | -5 | -5 | -4 | -2 | -1 | 1 | 2 | 0 | 0 | 0 | -1 | 1 | 4 | 6 | 4 | 1 | -3 |
-7 | -5 | -11 | -9 | -7 | -3 | -1 | 0 | 0 | 0 | -1 | -1 | 2 | 4 | -1 | -5 | -6 | |
550 | 450 | 1600 | 950 | 1350 | 1900 | 1850 | 1650 | 1500 | 1400 | 1150 | 2000 | 2550 | 2850 | 2650 | 2050 | 1150 | |
Cloud base (m) | 700 | 600 | 2750 | 900 | 600 | 600 | 600 | 700 | 700 | 700 | 750 | 650 | 600 | 600 | 5950 | 1800 | 600 |
 | — | — | 7:48 | — | — | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — |
 | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Sat afternoon. Becoming milder with drizzle, on Sun afternoon. Freeze-thaw conditions (max 2\°C on Sat night, min -5\°C on Fri afternoon). Winds increasing (calm on Fri afternoon, fresh winds from the SSE by Sat morning).
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Wed night. Freeze-thaw conditions (max 7\°C on Tue night, min -3\°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. 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.
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