– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sun 12 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sun 12 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sun 12 Apr 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 Wed afternoon. Freeze-thaw conditions (max 2°C on Sun night, min -7°C on Tue night). Winds increasing (light winds from the SW on Sun night, near gales from the S by Tue afternoon). | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 3°C on Sat afternoon, min -6°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  | |  |  |  | | | | |  | |  | | |
light snow | cloudy | cloudy | light snow | light snow | mod. snow | mod. snow | light snow | snow shwrs | some clouds | some clouds | snow shwrs | some clouds | some clouds | some clouds | cloudy | some clouds | light rain | cloudy | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
2 | — | — | 2 | 5 | 7 | 8 | 4 | 6 | — | — | 1 | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | — | |
max °C | 2 | -1 | -1 | -1 | -3 | -3 | -2 | -6 | -6 | -6 | -5 | -4 | -3 | -4 | -3 | -2 | 0 | 3 | 4 |
min °C | 0 | -1 | -1 | -3 | -3 | -3 | -7 | -7 | -6 | -6 | -6 | -5 | -4 | -4 | -3 | -3 | -1 | 1 | 3 |
-4 | -4 | -5 | -8 | -10 | -11 | -12 | -12 | -11 | -10 | -9 | -8 | -4 | -6 | -3 | -5 | -4 | -2 | 1 | |
1700 | 1350 | 1350 | 1100 | 1000 | 1100 | 150 | 650 | 750 | 0 | 800 | 1000 | 500 | 950 | 1150 | 1000 | 1450 | 1850 | 2000 | |
Cloud base (m) | 550 | 600 | 600 | 550 | 600 | 550 | 550 | 550 | 550 | 700 | 600 | 650 | 700 | 600 | 700 | 750 | 2000 | 1950 | 2500 |
 | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — |
 | — | — | 7:55 | — | — | 7:57 | — | — | 7:59 | — | — | — | 8:00 | — | — | 8:01 | — | — | 8:02 |
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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 Wed afternoon. Freeze-thaw conditions (max 2°C on Sun night, min -7°C on Tue night). Winds increasing (light winds from the SW on Sun night, near gales from the S by Tue afternoon).
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 3°C on Sat afternoon, min -6°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.