– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sun 22 Dec Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 3 am Sun 22 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sun 22 Dec 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 Sun night. Freeze-thaw conditions (max 2°C on Mon afternoon, min -8°C on Tue afternoon). Winds decreasing (strong winds from the SSW on Sun afternoon, calm by Mon morning). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -3°C on Fri afternoon, min -7°C on Wed morning). Mainly near gales. | |||||||||||||||||
Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  |  |  |  | |  |  | | |  | | | | |
light snow | light snow | snow shwrs | some clouds | cloudy | light snow | heavy snow | snow shwrs | some clouds | cloudy | mod. snow | heavy snow | light snow | light snow | cloudy | mod. snow | mod. snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
2.0 | 4 | 20 | — | — | 5 | 13 | 2.0 | — | — | 6 | 33 | 2.0 | 2.0 | — | 10 | 10 | 21 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -2 | -2 | -2 | -2 | 2 | 1 | -5 | -6 | -8 | -7 | -4 | -5 | -6 | -6 | -5 | -4 | -3 | -4 |
min°C | -4 | -2 | -5 | -5 | 0 | -3 | -6 | -8 | -8 | -7 | -6 | -5 | -6 | -7 | -7 | -4 | -4 | -4 |
-12 | -11 | -14 | -7 | -4 | -9 | -14 | -16 | -15 | -15 | -16 | -15 | -12 | -14 | -13 | -13 | -13 | -12 | |
1450 | 1750 | 1550 | 1350 | 2000 | 1800 | 1150 | 1150 | 800 | 900 | 1000 | 1200 | 900 | 1050 | 1050 | 1150 | 1250 | 1550 | |
Cloud base (m) | 750 | 550 | 550 | 700 | 700 | 2300 | 550 | 550 | 600 | 600 | 550 | 500 | 550 | 550 | 550 | 650 | 500 | 550 |
 | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — |
 | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — | — | 4:16 | — | — | 4:17 | — | — | 4:17 | — |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 2°C on Mon afternoon, min -8°C on Tue afternoon). Winds decreasing (strong winds from the SSW on Sun afternoon, calm by Mon morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -3°C on Fri afternoon, min -7°C on Wed morning). Mainly near gales.
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.
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