– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Sun 01 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sun 01 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sun 01 Mar 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 Tue night. Freeze-thaw conditions (max 4°C on Mon afternoon, min -2°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the SSW by Tue morning). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Thu afternoon. Freeze-thaw conditions (max 1°C on Fri night, min -4°C on Wed night). Wind will be generally light. | ||||||||||||||||
Sun 1 | Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | Friday 6 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  | | |  | |  | |  | | | |
clear | clear | some clouds | clear | some clouds | light snow | light snow | heavy snow | light snow | light snow | light snow | light snow | mod. snow | light snow | cloudy | light snow | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | 1 | 4 | 20 | 3 | 2 | 2 | 4 | 6 | 2 | — | 2 | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 3 | 3 | 3 | 4 | 3 | 2 | 1 | 0 | -2 | -1 | -3 | -4 | -2 | -1 | -1 | -1 | 1 |
min °C | 3 | 3 | 2 | 3 | 2 | 1 | 1 | -2 | -2 | -2 | -4 | -4 | -3 | -1 | -1 | -2 | 0 |
2 | 2 | 1 | 1 | -3 | -6 | -5 | -7 | -6 | -7 | -10 | -8 | -8 | -6 | -5 | -6 | -4 | |
2250 | 2250 | 2100 | 2100 | 2100 | 1800 | 1650 | 1450 | 1200 | 1250 | 1000 | 900 | 1000 | 1300 | 1300 | 1250 | 1600 | |
Cloud base (m) | 5150 | 6100 | 750 | 550 | 550 | 600 | 600 | 600 | 700 | 600 | 600 | 600 | 700 | 600 | |||
 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — |
 | 5:51 | — | — | 5:52 | — | — | 5:54 | — | — | 5:55 | — | — | 5:58 | — | — | 5:59 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Mon afternoon, min -2°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the SSW by Tue morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu afternoon. Freeze-thaw conditions (max 1°C on Fri night, min -4°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.