– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Thu 08 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Thu 08 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Thu 08 Jan 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 -1°C on Fri afternoon, min -9°C on Thu afternoon). Mainly near gales. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 7°C on Tue night, min -1°C on Sun afternoon). Winds decreasing (strong winds from the SW on Sun night, light winds from the W by Tue morning). | ||||||||||||||||
Thu 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | |  |  | | |  | |  |  |  | |  | |
light snow | light snow | some clouds | some clouds | cloudy | light snow | mod. snow | mod. snow | mod. snow | mod. snow | heavy snow | mod. snow | snow shwrs | rain shwrs | rain shwrs | rain shwrs | clear | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
4 | 4 | — | — | — | 1 | 6 | 7 | 7 | 7 | 16 | 6 | 1 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | 0.1 | 0.1 | — | |
max °C | -8 | -6 | -5 | -1 | -1 | -2 | -3 | -1 | -1 | -1 | 0 | 1 | 2 | 2 | 3 | 6 | 7 |
min °C | -9 | -7 | -6 | -4 | -2 | -2 | -4 | -3 | -2 | -1 | -1 | 1 | 2 | 2 | 2 | 5 | 4 |
-19 | -15 | -13 | -10 | -10 | -11 | -11 | -9 | -11 | -9 | -9 | -5 | -4 | -4 | -2 | 2 | -1 | |
700 | 950 | 1100 | 1350 | 2000 | 1750 | 1200 | 1700 | 1650 | 1800 | 2050 | 2300 | 2400 | 2550 | 2600 | 3200 | 3450 | |
Cloud base (m) | 600 | 800 | 650 | 650 | 650 | 2800 | 1750 | 750 | 600 | 600 | 600 | 600 | 650 | 800 | 700 | 700 | |
 | — | — | 7:58 | — | — | 7:58 | — | — | 7:56 | — | — | 7:56 | — | — | 7:56 | — | — |
 | 4:30 | — | — | 4:30 | — | — | 4:32 | — | — | 4:34 | — | — | 4:35 | — | — | 4:37 | — |
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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 -1°C on Fri afternoon, min -9°C on Thu afternoon). Mainly near gales.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 7°C on Tue night, min -1°C on Sun afternoon). Winds decreasing (strong winds from the SW on Sun night, light winds from the W 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.