– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Wed 30 Oct Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 10 am Wed 30 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Wed 30 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 1°C on Wed morning, min -3°C on Wed night). Wind will be generally light. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Mon night. Temperatures will be below freezing (max -1°C on Sat morning, min -3°C on Sat night). Winds increasing (calm on Sat morning, fresh winds from the S by Mon afternoon). | |||||||||||||||||
Wednesday 30 | Thursday 31 | Friday 1 | Saturday 2 | Sunday 3 | Monday 4 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | |  | | | | | |  | |
cloudy | light snow | mod. snow | some clouds | clear | some clouds | cloudy | light snow | light snow | light snow | light snow | snow shwrs | cloudy | cloudy | some clouds | cloudy | light snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 2.0 | 10 | — | — | — | — | 2.0 | 4 | 2.0 | 4 | 1.0 | — | — | — | — | 5 | 17 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 1 | 0 | -2 | -2 | -1 | 0 | 0 | -1 | 0 | -1 | -1 | -2 | -3 | -3 | -3 | -2 | -2 | -1 |
min°C | 0 | -1 | -3 | -3 | -2 | -1 | -2 | -1 | -1 | -1 | -2 | -3 | -3 | -3 | -3 | -2 | -2 | -2 |
-5 | -5 | -9 | -8 | -5 | -4 | -7 | -6 | -5 | -3 | -6 | -7 | -6 | -6 | -7 | -6 | -9 | -9 | |
1600 | 1300 | 1150 | 1200 | 1350 | 1450 | 1400 | 1400 | 1350 | 1300 | 1200 | 1000 | 1050 | 1100 | 1050 | 1200 | 1200 | 1200 | |
Cloud base (m) | 2500 | 1400 | 550 | 700 | 1450 | 2350 | 800 | 550 | 550 | 550 | 550 | 650 | 600 | 600 | 600 | 1950 | 700 | 550 |
 | 7:52 | — | — | 7:54 | — | — | 7:54 | — | — | 7:56 | — | — | 6:58 | — | — | 8:00 | — | — |
 | — | 5:50 | — | — | 5:47 | — | — | 5:45 | — | — | 5:45 | — | — | 4:43 | — | — | 5:42 | — |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 1°C on Wed morning, min -3°C on Wed night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Mon night. Temperatures will be below freezing (max -1°C on Sat morning, min -3°C on Sat night). Winds increasing (calm on Sat morning, fresh winds from the S by Mon afternoon).
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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