– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Sat 28 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Sat 28 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sat 28 Mar 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 Sun afternoon. Temperatures will be below freezing (max 0°C on Sat morning, min -9°C on Sun night). Wind will be generally light. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -1°C on Tue night, min -5°C on Wed night). Wind will be generally light. | |||||||||||||||||
Saturday 28 | Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 1 | Thursday 2 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  | |  | | |  | |  | | | | | |
cloudy | light snow | cloudy | some clouds | heavy snow | snow shwrs | snow shwrs | some clouds | some clouds | cloudy | cloudy | light snow | light snow | mod. snow | snow shwrs | snow shwrs | snow shwrs | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 1 | — | — | 13 | 3 | 2 | — | — | — | — | 1 | 2 | 9 | 16 | 1 | 2 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 0 | -2 | -2 | -5 | -4 | -7 | -8 | -6 | -3 | -2 | -2 | -1 | -3 | -3 | -5 | -5 | -4 | -3 |
min °C | -2 | -2 | -5 | -5 | -6 | -9 | -9 | -7 | -5 | -2 | -2 | -3 | -3 | -4 | -5 | -5 | -4 | -4 |
-5 | -6 | -8 | -10 | -12 | -16 | -15 | -10 | -8 | -4 | -5 | -7 | -8 | -11 | -9 | -9 | -7 | -6 | |
1300 | 1200 | 850 | 900 | 650 | 0 | 500 | 750 | 300 | 1200 | 1300 | 1300 | 1000 | 950 | 350 | 800 | 1000 | 0 | |
Cloud base (m) | 2250 | 700 | 1600 | 600 | 550 | 650 | 600 | 750 | 600 | 2450 | 2600 | 650 | 500 | 550 | 550 | 600 | 600 | 600 |
 | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:46 | — | — | 6:43 | — | — |
 | — | 7:31 | — | — | 7:32 | — | — | 7:35 | — | — | 7:36 | — | — | 7:37 | — | — | 7:38 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Sun afternoon. Temperatures will be below freezing (max 0°C on Sat morning, min -9°C on Sun night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -1°C on Tue night, min -5°C on Wed night). Wind will be generally light.
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.