– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sat 11 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sat 11 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 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 heavy fall of snow, heaviest during Tue afternoon. Temperatures will be below freezing (max 0°C on Sat night, min -7°C on Mon night). Winds increasing (calm on Sat night, near gales from the SSW by Tue afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -4°C on Fri afternoon, min -12°C on Tue night). Winds decreasing (near gales from the SSW on Tue night, calm by Fri morning). | ||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | |  | |  |  |  |  | | | | | | | | |
some clouds | some clouds | some clouds | snow shwrs | light snow | light snow | light snow | light snow | heavy snow | heavy snow | mod. snow | snow shwrs | snow shwrs | some clouds | snow shwrs | some clouds | some clouds | some clouds | some clouds | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | 1 | 1 | 1 | 2 | 5 | 12 | 21 | 6 | 7 | 1 | — | 2 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 0 | -1 | -1 | -1 | -4 | -4 | -5 | -7 | -6 | -6 | -11 | -10 | -9 | -9 | -8 | -6 | -5 | -4 | -3 |
min °C | -1 | -1 | -1 | -3 | -4 | -4 | -7 | -7 | -7 | -12 | -12 | -11 | -10 | -9 | -8 | -8 | -6 | -4 | -4 |
-3 | -4 | -4 | -8 | -9 | -10 | -15 | -16 | -17 | -23 | -22 | -18 | -15 | -16 | -14 | -14 | -6 | -6 | -8 | |
2000 | 2050 | 2000 | 1700 | 1300 | 1350 | 1100 | 1000 | 1050 | 450 | 650 | 850 | 400 | 800 | 1000 | 450 | 900 | 1150 | 800 | |
Cloud base (m) | 600 | 1600 | 750 | 750 | 600 | 600 | 550 | 550 | 550 | 600 | 550 | 600 | 650 | 600 | 650 | 700 | 600 | 650 | 700 |
 | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — |
 | — | — | 7:53 | — | — | 7:55 | — | — | 7:57 | — | — | 7:59 | — | — | — | 8:00 | — | — | 8:01 |
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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 Tue afternoon. Temperatures will be below freezing (max 0°C on Sat night, min -7°C on Mon night). Winds increasing (calm on Sat night, near gales from the SSW by Tue afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -4°C on Fri afternoon, 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.