– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Tue 10 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Tue 10 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Tue 10 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 Tue afternoon. Temperatures will be below freezing (max -3°C on Wed night, min -14°C on Tue morning). Winds increasing (light winds from the W on Tue morning, stormy winds from the WSW by Wed night). | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Fri morning. Temperatures will be below freezing (max 0°C on Sun night, min -14°C on Sat morning). Winds increasing (light winds from the W on Sun morning, strong winds from the W by Sun night). | |||||||||||||||||
Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  | | | |  |  | | |  |  | | | |
some clouds | heavy snow | heavy snow | light snow | light snow | heavy snow | mod. snow | heavy snow | heavy snow | light snow | snow shwrs | light snow | light snow | some clouds | some clouds | cloudy | light snow | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 11 | 15 | 2 | 5 | 12 | 6 | 15 | 17 | 4 | 2 | 4 | 2 | — | — | — | 2 | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -13 | -11 | -10 | -9 | -4 | -3 | -10 | -10 | -7 | -8 | -10 | -12 | -14 | -12 | -9 | -6 | -5 | 0 |
min °C | -14 | -12 | -11 | -11 | -6 | -12 | -11 | -10 | -9 | -9 | -11 | -13 | -14 | -13 | -12 | -7 | -5 | -3 |
-22 | -23 | -21 | -20 | -16 | -26 | -23 | -20 | -18 | -19 | -20 | -21 | -23 | -22 | -21 | -12 | -12 | -11 | |
500 | 600 | 550 | 700 | 1300 | 600 | 650 | 550 | 600 | 600 | 550 | 0 | 300 | 400 | 0 | 800 | 800 | 1900 | |
Cloud base (m) | 600 | 900 | 600 | 600 | 550 | 600 | 650 | 600 | 550 | 600 | 600 | 650 | 800 | 700 | 650 | 2200 | 800 | 900 |
 | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:26 | — | — | 7:22 | — | — | 7:20 | — | — |
 | — | 7:05 | — | — | 7:06 | — | — | 7:07 | — | — | 7:08 | — | — | 7:10 | — | — | 7:12 | — |
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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 afternoon. Temperatures will be below freezing (max -3°C on Wed night, min -14°C on Tue morning). Winds increasing (light winds from the W on Tue morning, stormy winds from the WSW by Wed night).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Fri morning. Temperatures will be below freezing (max 0°C on Sun night, min -14°C on Sat morning). Winds increasing (light winds from the W on Sun morning, strong winds from the W by Sun 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.