– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 11 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 11 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 11 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Tue morning. Temperatures will be below freezing (max 0°C on Sat night, min -7°C on Mon night). Winds increasing (calm on Sat night, fresh winds from the S by Tue morning). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -5°C on Fri morning, min -12°C on Tue night). Winds decreasing (near gales from the SSW on Tue night, calm by Fri morning). | ||||||||||||||||
Sat 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  |  |  |  | |  | | | | | |
light snow | some clouds | some clouds | cloudy | snow shwrs | cloudy | light snow | light snow | mod. snow | heavy snow | heavy snow | mod. snow | snow shwrs | some clouds | some clouds | snow shwrs | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
2 | — | — | — | 1 | — | 1 | 3 | 8 | 12 | 20 | 8 | 10 | — | — | 2 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -1 | 0 | -1 | -1 | -1 | -4 | -4 | -5 | -7 | -7 | -6 | -11 | -10 | -9 | -9 | -8 | -6 |
min °C | -1 | -1 | -1 | -1 | -3 | -4 | -4 | -7 | -7 | -7 | -12 | -12 | -10 | -10 | -9 | -8 | -8 |
-1 | -1 | -4 | -3 | -8 | -10 | -10 | -14 | -16 | -17 | -24 | -21 | -16 | -16 | -15 | -13 | -14 | |
1850 | 1950 | 2000 | 2000 | 1700 | 1300 | 1350 | 1100 | 950 | 1000 | 400 | 700 | 800 | 350 | 800 | 1000 | 300 | |
Cloud base (m) | 550 | 550 | 1600 | 600 | 650 | 600 | 600 | 550 | 550 | 550 | 550 | 600 | 600 | 700 | 600 | 600 | 900 |
 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — |
 | 7:52 | — | — | 7:53 | — | — | 7:55 | — | — | 7:57 | — | — | 7:59 | — | — | — | 8:00 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Tue morning. Temperatures will be below freezing (max 0°C on Sat night, min -7°C on Mon night). Winds increasing (calm on Sat night, fresh winds from the S by Tue morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -5°C on Fri morning, min -12°C on Tue night). Winds decreasing (near gales from the SSW on Tue night, calm by Fri 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.