– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sat 03 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sat 03 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sat 03 Jan 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 Sat morning. Temperatures will be below freezing (max -3°C on Sat morning, min -10°C on Mon afternoon). Winds decreasing (strong winds from the SSW on Sun morning, light winds from the SW by Mon morning). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue afternoon. Temperatures will be well below freezing (max -7°C on Tue morning, min -14°C on Thu morning). Winds decreasing (strong winds from the SW on Tue morning, light winds from the W by Wed morning). | |||||||||||||||||
Saturday 3 | Sunday 4 | Monday 5 | Tuesday 6 | Wednesday 7 | Thursday 8 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | |  | | | | | | | | | |  | |
heavy snow | light snow | light snow | heavy snow | light snow | heavy snow | heavy snow | snow shwrs | heavy snow | heavy snow | heavy snow | heavy snow | light snow | light snow | heavy snow | light snow | light snow | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
12 | 1 | 2 | 11 | 4 | 12 | 11 | 2 | 11 | 16 | 17 | 19 | 3 | 2 | 16 | 5 | 2 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -3 | -4 | -3 | -4 | -7 | -7 | -8 | -10 | -9 | -7 | -8 | -10 | -11 | -11 | -11 | -13 | -13 | -9 |
min °C | -3 | -4 | -4 | -6 | -7 | -8 | -9 | -10 | -10 | -8 | -9 | -11 | -11 | -11 | -13 | -14 | -13 | -13 |
-12 | -13 | -13 | -15 | -15 | -18 | -18 | -19 | -18 | -18 | -19 | -22 | -16 | -18 | -25 | -26 | -24 | -22 | |
1450 | 1600 | 1700 | 1400 | 1050 | 950 | 850 | 700 | 550 | 650 | 750 | 500 | 600 | 550 | 500 | 350 | 150 | 0 | |
Cloud base (m) | 550 | 500 | 1400 | 500 | 550 | 550 | 550 | 600 | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 600 | 700 | 650 |
 | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — |
 | — | 4:23 | — | — | 4:24 | — | — | 4:27 | — | — | 4:28 | — | — | 4:29 | — | — | 4:30 | — |
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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 Sat morning. Temperatures will be below freezing (max -3°C on Sat morning, min -10°C on Mon afternoon). Winds decreasing (strong winds from the SSW on Sun morning, light winds from the SW by Mon morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue afternoon. Temperatures will be well below freezing (max -7°C on Tue morning, min -14°C on Thu morning). Winds decreasing (strong winds from the SW on Tue morning, light winds from the W by Wed morning).
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.