– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Thu 08 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Thu 08 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Thu 08 Jan 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 Thu morning. Freeze-thaw conditions (max 2°C on Fri night, min -5°C on Thu morning). Winds increasing (calm on Fri afternoon, strong winds from the S by Sat afternoon). | Days 4–6 Weather SummaryA moderate fall of snow heaviest on Sun night. Turning milder with heavy rain (total 21mm), heaviest during Mon morning. Very mild (max 10°C on Tue night, min 1°C on Sun morning). Winds decreasing (strong winds from the S on Sun afternoon, calm by Tue afternoon). | |||||||||||||||||
Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | | | |  | |  | | | |  |  | |
light snow | light snow | light snow | some clouds | some clouds | light rain | light rain | light snow | light snow | light snow | mod. snow | light snow | mod. rain | light rain | light rain | some clouds | rain shwrs | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
5 | 2 | 3 | — | — | — | — | 2 | 5 | 4 | 6 | 4 | — | — | — | — | — | — | |
— | — | — | — | — | 0.2 | 0.1 | — | — | — | — | 14 | 6 | 0.8 | 0.6 | — | 0.1 | — | |
max °C | -5 | -4 | -3 | -1 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 4 | 5 | 6 | 6 | 8 | 9 | 10 |
min °C | -5 | -4 | -3 | -2 | 0 | 2 | 2 | -2 | -1 | 1 | 1 | 2 | 4 | 5 | 5 | 6 | 9 | 9 |
-13 | -11 | -8 | -4 | 0 | -2 | -4 | -10 | -7 | -5 | -6 | -4 | -1 | 1 | 2 | 5 | 9 | 8 | |
600 | 750 | 950 | 1050 | 1400 | 1950 | 1800 | 1650 | 1650 | 1750 | 1750 | 2000 | 2400 | 2400 | 2700 | 2700 | 3250 | 3400 | |
Cloud base (m) | 650 | 600 | 650 | 650 | 650 | 2800 | 2350 | 600 | 650 | 600 | 600 | 600 | 750 | 700 | 650 | 750 | ||
 | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — | 7:56 | — | — | 7:56 | — | — | 7:56 | — | — |
 | — | 4:30 | — | — | 4:30 | — | — | 4:32 | — | — | 4:34 | — | — | 4:35 | — | — | 4:37 | — |
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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 Thu morning. Freeze-thaw conditions (max 2°C on Fri night, min -5°C on Thu morning). Winds increasing (calm on Fri afternoon, strong winds from the S by Sat afternoon).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow heaviest on Sun night. Turning milder with heavy rain (total 21mm), heaviest during Mon morning. Very mild (max 10°C on Tue night, min 1°C on Sun morning). Winds decreasing (strong winds from the S on Sun afternoon, calm by Tue 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.