– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sun 08 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sun 08 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sun 08 Mar 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 Mon afternoon. Temperatures will be below freezing (max -4°C on Wed afternoon, min -14°C on Mon night). Winds increasing (light winds from the SW on Tue morning, gales from the SW by Wed afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Thu afternoon. Temperatures will be below freezing (max -4°C on Wed night, min -12°C on Sat morning). Winds decreasing (severe gales from the WSW on Wed night, light winds from the WNW by Sat morning). | ||||||||||||||||||
Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  | | | | |  | | |  | | | | |
mod. snow | light snow | heavy snow | snow shwrs | snow shwrs | light snow | mod. snow | mod. snow | mod. snow | mod. snow | light snow | heavy snow | heavy snow | heavy snow | light snow | some clouds | snow shwrs | light snow | some clouds | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
10 | 2 | 15 | 7 | 2 | 4 | 9 | 8 | 7 | 7 | 5 | 18 | 16 | 12 | 3 | — | 2 | 1 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -11 | -13 | -12 | -13 | -13 | -11 | -9 | -7 | -4 | -4 | -9 | -9 | -5 | -5 | -6 | -8 | -12 | -11 | -7 |
min °C | -13 | -13 | -12 | -14 | -14 | -12 | -11 | -7 | -6 | -10 | -11 | -9 | -8 | -5 | -7 | -11 | -12 | -11 | -10 |
-24 | -23 | -23 | -25 | -23 | -22 | -20 | -16 | -16 | -23 | -23 | -20 | -17 | -14 | -17 | -21 | -20 | -19 | -18 | |
450 | 500 | 450 | 0 | 450 | 600 | 700 | 850 | 1350 | 800 | 700 | 600 | 750 | 1050 | 900 | 150 | 500 | 600 | 0 | |
Cloud base (m) | 600 | 800 | 600 | 600 | 600 | 800 | 600 | 600 | 550 | 600 | 650 | 600 | 550 | 550 | 550 | 600 | 600 | 650 | 600 |
 | — | 7:33 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:26 | — | — | 7:22 | — | — |
 | — | — | 7:02 | — | — | 7:05 | — | — | 7:06 | — | — | 7:07 | — | — | 7:08 | — | — | 7:10 | — |
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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 Mon afternoon. Temperatures will be below freezing (max -4°C on Wed afternoon, min -14°C on Mon night). Winds increasing (light winds from the SW on Tue morning, gales from the SW by Wed afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu afternoon. Temperatures will be below freezing (max -4°C on Wed night, min -12°C on Sat morning). Winds decreasing (severe gales from the WSW on Wed night, light winds from the WNW by Sat 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.