– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sun 12 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sun 12 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sun 12 Apr 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. Temperatures will be below freezing (max -1°C on Sun afternoon, min -12°C on Tue night). Winds increasing (light winds from the W on Sun night, near gales from the SW by Tue night). | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Wed afternoon. Temperatures will be below freezing (max -3°C on Fri night, min -11°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  | |  | | | |  |  | | | |
cloudy | snow shwrs | light snow | light snow | light snow | mod. snow | heavy snow | heavy snow | light snow | snow shwrs | snow shwrs | snow shwrs | snow shwrs | some clouds | some clouds | some clouds | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | 2 | 1 | 1 | 2 | 6 | 13 | 18 | 4 | 5 | 2 | 1 | 2 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -1 | -1 | -4 | -4 | -4 | -7 | -6 | -6 | -11 | -10 | -9 | -8 | -8 | -6 | -5 | -4 | -3 |
min °C | -1 | -3 | -4 | -4 | -7 | -7 | -7 | -12 | -12 | -11 | -10 | -9 | -8 | -7 | -6 | -4 | -4 |
-4 | -8 | -9 | -10 | -15 | -16 | -17 | -23 | -21 | -18 | -16 | -15 | -14 | -14 | -10 | -4 | -7 | |
1950 | 1750 | 1350 | 1350 | 1100 | 950 | 1100 | 400 | 650 | 800 | 0 | 800 | 1000 | 300 | 950 | 1150 | 900 | |
Cloud base (m) | 750 | 550 | 600 | 600 | 550 | 550 | 550 | 750 | 550 | 650 | 650 | 600 | 650 | 650 | 600 | 750 | 700 |
 | — | — | 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: A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -1°C on Sun afternoon, min -12°C on Tue night). Winds increasing (light winds from the W on Sun night, near gales from the SW by Tue night).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed afternoon. Temperatures will be below freezing (max -3°C on Fri night, min -11°C on Wed afternoon). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 2134 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.