– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sat 13 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sat 13 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sat 13 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 8mm) on Sun night. Becoming colder with heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 4°C on Sat afternoon, min -7°C on Mon night). Mainly gales. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -2°C on Tue afternoon, min -11°C on Tue night). Winds increasing (fresh winds from the SW on Tue morning, severe gales from the W by Tue night). | |||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  |  |  |  |  | | | | | | | | | |
some clouds | cloudy | light snow | cloudy | cloudy | mod. snow | mod. snow | heavy snow | heavy snow | light snow | light snow | heavy snow | mod. snow | mod. snow | heavy snow | mod. snow | heavy snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | 1 | — | — | 9 | 6 | 11 | 11 | 4 | 5 | 31 | 9 | 9 | 13 | 6 | 18 | 17 | |
— | — | — | — | — | 8 | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 3 | 4 | 2 | -1 | 0 | 2 | 2 | -1 | -5 | -3 | -2 | -2 | -9 | -8 | -6 | -5 | -9 | -10 |
min°C | 3 | 4 | -1 | -1 | -1 | 1 | 1 | -5 | -7 | -4 | -3 | -11 | -10 | -9 | -8 | -6 | -11 | -11 |
-3 | -2 | -8 | -9 | -8 | -6 | -8 | -14 | -17 | -12 | -12 | -26 | -23 | -20 | -18 | -18 | -22 | -22 | |
2750 | 2800 | 2200 | 2000 | 2050 | 2600 | 2500 | 1950 | 1000 | 1400 | 1600 | 1000 | 750 | 850 | 1100 | 1100 | 700 | 550 | |
Cloud base (m) | 6800 | 1900 | 600 | 850 | 550 | 550 | 550 | 600 | 550 | 500 | 500 | 550 | 550 | 550 | 500 | 500 | 550 | |
 | 7:52 | — | — | 7:52 | — | — | 7:54 | — | — | 7:54 | — | — | 7:54 | — | — | 7:56 | — | — |
 | — | 4:10 | — | — | 4:10 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 8mm) on Sun night. Becoming colder with heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 4°C on Sat afternoon, min -7°C on Mon night). Mainly gales.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -2°C on Tue afternoon, min -11°C on Tue night). Winds increasing (fresh winds from the SW on Tue morning, severe gales from the W by Tue 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.