– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Thu 05 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Thu 05 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Thu 05 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA heavy fall of snow, heaviest during Sat afternoon. Freeze-thaw conditions (max 12°C on Thu morning, min -7°C on Sat night). Winds increasing (calm on Thu morning, near gales from the SSW by Sat night). | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Sun night. Temperatures will be below freezing (max -4°C on Tue night, min -7°C on Sun night). Wind will be generally light. | |||||||||||||||||
Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  |  | |  |  | |  |  | |  | | | | |
clear | some clouds | clear | some clouds | some clouds | some clouds | mod. snow | mod. snow | snow shwrs | cloudy | some clouds | mod. snow | light snow | light snow | light snow | light snow | some clouds | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | 7 | 10 | 9 | — | — | 6 | 1 | 1 | 2 | 2 | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 12 | 12 | 8 | 4 | 3 | 1 | -1 | -1 | -1 | -5 | -6 | -7 | -7 | -7 | -6 | -6 | -5 | -4 |
min °C | 11 | 9 | 5 | 4 | 2 | 0 | -1 | -1 | -7 | -6 | -6 | -7 | -7 | -7 | -7 | -6 | -5 | -5 |
11 | 6 | 1 | 0 | -3 | -8 | -9 | -8 | -16 | -12 | -9 | -11 | -13 | -14 | -14 | -12 | -11 | -9 | |
3700 | 3750 | 3200 | 2800 | 2650 | 2250 | 1850 | 1850 | 1250 | 1200 | 1300 | 1050 | 1050 | 1100 | 1100 | 1150 | 1400 | 1500 | |
Cloud base (m) | 8350 | 6350 | 6350 | 3200 | 1900 | 600 | 600 | 800 | 950 | 600 | 600 | 600 | 750 | 650 | 1900 | |||
 | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — | 7:22 | — | — |
 | — | 5:12 | — | — | 5:14 | — | — | 5:15 | — | — | 5:16 | — | — | 5:19 | — | — | 5:21 | — |
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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 afternoon. Freeze-thaw conditions (max 12°C on Thu morning, min -7°C on Sat night). Winds increasing (calm on Thu morning, near gales from the SSW by Sat night).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Sun night. Temperatures will be below freezing (max -4°C on Tue night, min -7°C on Sun night). 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.