– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Fri 06 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Fri 06 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Fri 06 Feb 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 Sat night. Freeze-thaw conditions (max 2°C on Fri afternoon, min -8°C on Sun night). Winds decreasing (near gales from the S on Fri night, light winds from the WNW by Sat night). | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -4°C on Tue afternoon, min -8°C on Wed morning). Wind will be generally light. | ||||||||||||||||
Fri 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | |  |  | |  | |  | | | | |
some clouds | some clouds | mod. snow | mod. snow | snow shwrs | cloudy | cloudy | some clouds | light snow | snow shwrs | some clouds | clear | some clouds | light snow | light snow | some clouds | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | 9 | 9 | 12 | — | — | — | 2 | 1 | — | — | — | 3 | 5 | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 2 | 0 | -1 | -2 | -3 | -4 | -4 | -6 | -7 | -7 | -5 | -5 | -4 | -5 | -7 | -8 | -7 |
min °C | 1 | -1 | -1 | -2 | -5 | -5 | -5 | -8 | -8 | -7 | -7 | -5 | -4 | -7 | -8 | -8 | -8 |
-6 | -10 | -9 | -9 | -12 | -8 | -10 | -15 | -15 | -13 | -11 | -10 | -9 | -12 | -14 | -14 | -14 | |
2500 | 2150 | 1750 | 1800 | 1400 | 1300 | 1400 | 1050 | 1000 | 1050 | 850 | 1450 | 1500 | 1250 | 1000 | 1000 | 750 | |
Cloud base (m) | 6100 | 1950 | 750 | 600 | 600 | 6550 | 600 | 750 | 600 | 750 | 850 | 2700 | 2550 | 700 | 600 | 600 | |
 | — | — | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — |
 | 5:14 | — | — | 5:15 | — | — | 5:16 | — | — | 5:19 | — | — | 5:21 | — | — | 5:22 | — |
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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 Sat night. Freeze-thaw conditions (max 2°C on Fri afternoon, min -8°C on Sun night). Winds decreasing (near gales from the S on Fri night, light winds from the WNW by Sat night).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -4°C on Tue afternoon, min -8°C on Wed morning). Wind will be generally light.
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.