– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Sun 12 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Sun 12 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sun 12 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryDrizzle on Sun night followed by colder weather and a heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 3°C on Sun morning, min -7°C on Tue night). Winds increasing (calm on Sun morning, near gales from the S by Tue night). | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -1°C on Fri night, min -7°C on Wed morning). Wind will be generally light. | |||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  |  |  | |  |  | | | | | | | |
some clouds | rain shwrs | rain shwrs | cloudy | cloudy | light snow | light snow | mod. snow | heavy snow | mod. snow | snow shwrs | some clouds | some clouds | snow shwrs | some clouds | some clouds | some clouds | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | 2 | 3 | 8 | 20 | 7 | 6 | — | — | 1 | — | — | — | — | |
— | 0.6 | 0.6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 3 | 3 | 3 | -1 | -1 | -1 | -3 | -3 | -2 | -7 | -6 | -6 | -5 | -4 | -3 | -4 | -2 | -1 |
min °C | 3 | 3 | 0 | -1 | -1 | -3 | -4 | -3 | -7 | -7 | -6 | -6 | -6 | -4 | -4 | -4 | -3 | -2 |
3 | 2 | -4 | -5 | -5 | -8 | -12 | -12 | -16 | -13 | -12 | -10 | -9 | -7 | -6 | -6 | -3 | -2 | |
2000 | 2050 | 1700 | 1300 | 1300 | 1100 | 950 | 1050 | 500 | 550 | 800 | 0 | 800 | 1000 | 0 | 1000 | 1200 | 1050 | |
Cloud base (m) | 1500 | 800 | 650 | 600 | 600 | 550 | 550 | 550 | 550 | 550 | 550 | 650 | 600 | 600 | 900 | 600 | 700 | 700 |
 | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — |
 | — | 7:53 | — | — | 7:55 | — | — | 7:57 | — | — | 7:59 | — | — | — | 8:00 | — | — | 8:01 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Drizzle on Sun night followed by colder weather and a heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 3°C on Sun morning, min -7°C on Tue night). Winds increasing (calm on Sun morning, near gales from the S by Tue night).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -1°C on Fri night, min -7°C on Wed morning). 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.