– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Fri 27 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Fri 27 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Fri 27 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. Freeze-thaw conditions (max 2°C on Fri afternoon, min -9°C on Sun night). Wind will be generally light. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Wed morning. Temperatures will be below freezing (max 0°C on Tue night, min -9°C on Mon morning). Wind will be generally light. | |||||||||||||||||
Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 1 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  |  |  |  |  |  |  | | |  | | | | |
cloudy | cloudy | cloudy | cloudy | cloudy | snow shwrs | some clouds | mod. snow | mod. snow | light snow | snow shwrs | some clouds | cloudy | cloudy | light snow | mod. snow | mod. snow | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | 3 | — | 6 | 8 | 2 | 1 | — | — | — | 1 | 9 | 8 | 2 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 1 | 2 | 2 | -1 | -2 | -2 | -5 | -5 | -7 | -8 | -7 | -5 | -5 | -3 | 0 | -2 | -2 | -4 |
min °C | 1 | 1 | 1 | -2 | -2 | -5 | -6 | -6 | -9 | -9 | -8 | -6 | -5 | -3 | -4 | -3 | -3 | -4 |
-2 | 0 | -2 | -5 | -5 | -9 | -9 | -11 | -17 | -15 | -13 | -9 | -5 | -7 | -11 | -9 | -10 | -10 | |
1750 | 1750 | 1650 | 1250 | 1200 | 650 | 800 | 600 | 0 | 500 | 650 | 0 | 900 | 1150 | 850 | 1050 | 1000 | 750 | |
Cloud base (m) | 3750 | 5550 | 2750 | 2200 | 850 | 600 | 900 | 550 | 600 | 600 | 700 | 600 | 2650 | 2350 | 1600 | 500 | 550 | 550 |
 | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:46 | — | — |
 | — | 7:30 | — | — | 7:31 | — | — | 7:32 | — | — | 7:35 | — | — | 7:36 | — | — | 7:37 | — |
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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. Freeze-thaw conditions (max 2°C on Fri afternoon, 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 morning. Temperatures will be below freezing (max 0°C on Tue night, min -9°C on Mon morning). 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.