– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Thu 20 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Thu 20 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Thu 20 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA moderate fall of snow, heaviest on Sat night. Temperatures will be below freezing (max 0°C on Fri night, min -4°C on Thu morning). Winds increasing (light winds from the SW on Thu afternoon, fresh winds from the SSW by Sat night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -3°C on Tue night, min -10°C on Mon night). Winds increasing (calm on Tue morning, strong winds from the SW by Tue night). | |||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | | |  |  |  |  | | | | | | | |
some clouds | clear | some clouds | cloudy | cloudy | some clouds | cloudy | cloudy | heavy snow | mod. snow | light snow | snow shwrs | light snow | some clouds | some clouds | cloudy | light snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | 18 | 6 | 2 | 6 | 4 | — | — | — | 1 | 16 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -4 | -2 | -1 | -1 | -1 | 0 | 0 | -1 | -1 | -4 | -9 | -9 | -9 | -9 | -9 | -8 | -7 | -3 |
min°C | -4 | -3 | -3 | -1 | -1 | 0 | 0 | -1 | -2 | -6 | -9 | -9 | -9 | -9 | -10 | -8 | -8 | -6 |
-10 | -8 | -8 | -7 | -7 | -6 | -5 | -7 | -10 | -14 | -18 | -18 | -16 | -15 | -15 | -11 | -13 | -13 | |
1400 | 1450 | 1450 | 1850 | 1800 | 2100 | 2150 | 1950 | 1850 | 1300 | 900 | 800 | 800 | 750 | 400 | 750 | 800 | 900 | |
Cloud base (m) | 1500 | 850 | 850 | 2150 | 850 | 1550 | 900 | 1550 | 550 | 550 | 600 | 600 | 600 | 600 | 750 | 600 | 2100 | 550 |
 | 7:24 | — | — | 7:24 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — |
 | — | 4:22 | — | — | 4:21 | — | — | 4:20 | — | — | 4:19 | — | — | 4:17 | — | — | 4:17 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Sat night. Temperatures will be below freezing (max 0°C on Fri night, min -4°C on Thu morning). Winds increasing (light winds from the SW on Thu afternoon, fresh winds from the SSW by Sat night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -3°C on Tue night, min -10°C on Mon night). Winds increasing (calm on Tue morning, strong winds from the SW 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.