– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Sun 22 Dec Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 9 am Sun 22 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 9 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 6°C on Mon afternoon, min -4°C on Tue afternoon). Mainly strong winds. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Thu morning. Temperatures will be below freezing (max 0°C on Fri night, min -3°C on Wed morning). Mainly strong winds. | |||||||||||||||||
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 | mod. snow | mod. snow | light snow | light snow | cloudy | mod. snow | heavy snow | heavy snow | light snow | light snow | light snow | cloudy | mod. snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
1.0 | 3 | 13 | — | — | 6 | 6 | 1.0 | 1.0 | — | 8 | 22 | 20 | 5 | 5 | 2.0 | — | 7 | |
— | — | — | — | — | 0.2 | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 0 | 2 | 1 | 1 | 6 | 4 | -2 | -2 | -3 | -3 | -2 | -1 | -3 | -2 | -2 | -2 | -2 | 0 |
min°C | 0 | 1 | -1 | -1 | 2 | -1 | -2 | -4 | -4 | -3 | -3 | -2 | -3 | -2 | -2 | -2 | -2 | -1 |
-5 | -5 | -6 | -5 | -1 | -6 | -6 | -9 | -8 | -10 | -10 | -10 | -12 | -8 | -6 | -6 | -9 | -7 | |
1450 | 1750 | 1550 | 1400 | 2100 | 1900 | 1100 | 1150 | 1000 | 950 | 1000 | 1250 | 950 | 1150 | 1150 | 1100 | 1150 | 1350 | |
Cloud base (m) | 800 | 600 | 550 | 750 | 650 | 2250 | 550 | 550 | 600 | 600 | 550 | 500 | 500 | 550 | 550 | 550 | 550 | 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 6°C on Mon afternoon, min -4°C on Tue afternoon). Mainly strong winds.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu morning. Temperatures will be below freezing (max 0°C on Fri night, min -3°C on Wed morning). Mainly strong winds.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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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