– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Thu 20 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Thu 20 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Thu 20 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Sun morning. Temperatures will be below freezing (max 0°C on Thu night, min -5°C on Sun morning). Winds increasing (light winds from the SW on Thu afternoon, strong winds from the S by Sat night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Sun afternoon. Temperatures will be below freezing (max -3°C on Wed morning, min -10°C on Sun night). Winds decreasing (fresh winds from the W on Sun night, calm by Tue morning). | ||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | | |  |  | |  |  |  | | | |  | |
some clouds | some clouds | cloudy | cloudy | cloudy | cloudy | cloudy | heavy snow | heavy snow | heavy snow | snow shwrs | snow shwrs | clear | some clouds | cloudy | cloudy | mod. snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 13 | 22 | 11 | 6 | 2 | — | — | — | — | 10 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -1 | 0 | -1 | -1 | 0 | 0 | 0 | -1 | -3 | -8 | -9 | -10 | -9 | -10 | -9 | -6 | -4 |
min°C | -3 | -2 | -1 | -2 | 0 | 0 | -1 | -3 | -5 | -9 | -10 | -10 | -9 | -10 | -9 | -8 | -6 |
-7 | -8 | -8 | -8 | -6 | -5 | -8 | -12 | -14 | -19 | -20 | -19 | -17 | -17 | -9 | -13 | -12 | |
1500 | 1600 | 1800 | 1700 | 2100 | 2100 | 2000 | 1800 | 1450 | 950 | 750 | 850 | 700 | 0 | 700 | 850 | 600 | |
Cloud base (m) | 750 | 800 | 2550 | 850 | 800 | 750 | 850 | 550 | 550 | 600 | 600 | 700 | 750 | 700 | 650 | 2550 | 1000 |
 | — | — | 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 heavy fall of snow, heaviest during Sun morning. Temperatures will be below freezing (max 0°C on Thu night, min -5°C on Sun morning). Winds increasing (light winds from the SW on Thu afternoon, strong winds from the S by Sat night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun afternoon. Temperatures will be below freezing (max -3°C on Wed morning, min -10°C on Sun night). Winds decreasing (fresh winds from the W on Sun night, calm by Tue 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.