– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Fri 27 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Fri 27 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Fri 27 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA heavy fall of snow, heaviest during Sun afternoon. Temperatures will be below freezing (max -2°C on Fri morning, min -14°C on Sun night). Mainly fresh winds. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Wed morning. Temperatures will be well below freezing (max -6°C on Tue night, min -14°C on Mon morning). Winds decreasing (strong winds from the S on Wed morning, calm by Wed night). | |||||||||||||||||
Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 1 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  |  | |  |  | |  |  | | | |  | | | |
cloudy | cloudy | cloudy | cloudy | light snow | light snow | light snow | mod. snow | heavy snow | light snow | snow shwrs | some clouds | cloudy | cloudy | light snow | heavy snow | mod. snow | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | 1 | 2 | 1 | 10 | 16 | 3 | 1 | — | — | — | 2 | 13 | 7 | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -2 | -2 | -4 | -6 | -6 | -8 | -8 | -11 | -13 | -11 | -9 | -9 | -8 | -6 | -6 | -8 | -9 |
min °C | -3 | -3 | -4 | -5 | -6 | -8 | -9 | -9 | -14 | -14 | -12 | -10 | -9 | -8 | -8 | -7 | -8 | -9 |
-9 | -9 | -10 | -11 | -13 | -15 | -16 | -19 | -23 | -25 | -19 | -16 | -14 | -15 | -17 | -17 | -17 | -17 | |
1750 | 1750 | 1700 | 1250 | 1150 | 950 | 900 | 700 | 0 | 450 | 650 | 0 | 900 | 1100 | 850 | 950 | 950 | 700 | |
Cloud base (m) | 3900 | 5950 | 2800 | 1750 | 700 | 850 | 550 | 550 | 700 | 600 | 750 | 600 | 2500 | 2150 | 800 | 550 | 550 | 550 |
 | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:46 | — | — |
 | — | 7:30 | — | — | 7:31 | — | — | 7:32 | — | — | 7:35 | — | — | 7:36 | — | — | 7:37 | — |
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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 Sun afternoon. Temperatures will be below freezing (max -2°C on Fri morning, min -14°C on Sun night). Mainly fresh winds.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed morning. Temperatures will be well below freezing (max -6°C on Tue night, min -14°C on Mon morning). Winds decreasing (strong winds from the S on Wed morning, calm by Wed night).
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.