– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Fri 06 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Fri 06 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Fri 06 Mar 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 night. Freeze-thaw conditions (max 1°C on Fri night, min -13°C on Sun night). Winds increasing (light winds from the W on Fri morning, near gales from the W by Sun morning). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Wed morning. Temperatures will be well below freezing (max -7°C on Tue night, min -13°C on Mon morning). Winds increasing (moderate winds from the WSW on Tue afternoon, gales from the SW by Tue night). | |||||||||||||||||
Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | |  | |  | |  | | | | | | |
light snow | light snow | light snow | cloudy | cloudy | heavy snow | snow shwrs | light snow | mod. snow | light snow | mod. snow | mod. snow | heavy snow | snow shwrs | heavy snow | heavy snow | heavy snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
2 | 3 | 1 | — | — | 30 | 2 | 1 | 8 | 5 | 7 | 10 | 12 | 1 | 15 | 26 | 22 | 18 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -1 | 1 | 1 | 1 | 0 | -7 | -10 | -12 | -12 | -12 | -13 | -12 | -11 | -7 | -7 | -7 | -9 |
min °C | -3 | -1 | 0 | 1 | 0 | -3 | -8 | -11 | -13 | -13 | -12 | -13 | -13 | -12 | -11 | -7 | -8 | -11 |
-8 | -7 | -7 | -6 | -8 | -12 | -19 | -22 | -24 | -23 | -22 | -24 | -24 | -20 | -22 | -18 | -19 | -20 | |
1400 | 1750 | 2400 | 2300 | 2150 | 1750 | 1150 | 800 | 450 | 500 | 500 | 250 | 400 | 600 | 300 | 600 | 800 | 600 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 800 | 600 | 700 | 600 | 600 | 600 | 600 | 600 | 550 | 600 | 600 |
 | 6:39 | — | — | 6:37 | — | — | 7:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:28 | — | — |
 | — | 5:59 | — | — | 6:00 | — | — | 7:01 | — | — | 6:04 | — | — | 6:05 | — | — | 6:07 | — |
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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 1°C on Fri night, min -13°C on Sun night). Winds increasing (light winds from the W on Fri morning, near gales from the W by Sun morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed morning. Temperatures will be well below freezing (max -7°C on Tue night, min -13°C on Mon morning). Winds increasing (moderate winds from the WSW on Tue afternoon, gales from the SW by Tue night).
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.