– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Thu 11 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Thu 11 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Thu 11 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of snow turning to light rain (total 5mm) on Sat night. Freeze-thaw conditions (max 7°C on Sat morning, min -1°C on Thu morning). Winds increasing (calm on Thu afternoon, fresh winds from the S by Sat night). | Days 4–6 Weather SummaryHeavy rain (total 48mm) on Sun night. Becoming colder with heavy fall of snow, heaviest during Tue afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min -5°C on Tue night). Mainly near gales. | |||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | | | | |  |  |  |  | |  |  | |
cloudy | light snow | light snow | light rain | light rain | rain shwrs | clear | cloudy | light snow | light rain | cloudy | heavy rain | heavy rain | mod. rain | mod. snow | light snow | heavy snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 2 | 1 | — | — | — | — | — | 1 | — | — | — | — | — | 8 | 5 | 13 | 24 | |
— | — | 1.5 | 1 | 0.4 | 0.3 | — | — | 2 | 0.1 | — | 21 | 11 | 7 | 9 | — | — | — | |
max°C | 0 | 0 | 4 | 4 | 4 | 4 | 7 | 7 | 6 | 3 | 3 | 4 | 5 | 6 | 5 | -1 | 0 | -5 |
min°C | -1 | -1 | 1 | 4 | 4 | 4 | 6 | 7 | 2 | 3 | 3 | 2 | 4 | 5 | -3 | -3 | -4 | -5 |
-5 | -1 | -1 | 0 | 1 | 1 | 3 | 3 | -4 | -3 | -3 | -5 | -3 | -2 | -10 | -11 | -12 | -13 | |
1350 | 1350 | 2300 | 2150 | 2200 | 2750 | 2950 | 2750 | 2250 | 2150 | 2150 | 2200 | 2500 | 2450 | 1500 | 1100 | 1450 | 800 | |
Cloud base (m) | 950 | 1500 | 600 | 600 | 600 | 600 | 750 | 6750 | 2450 | 650 | 900 | 550 | 550 | 550 | 550 | 750 | 500 | 500 |
 | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — | 7:54 | — | — | 7:54 | — | — |
 | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:12 | — | — | 4:12 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of snow turning to light rain (total 5mm) on Sat night. Freeze-thaw conditions (max 7°C on Sat morning, min -1°C on Thu morning). Winds increasing (calm on Thu afternoon, fresh winds from the S by Sat night).
South Twin Sister Weather (Days 3-6):
Heavy rain (total 48mm) on Sun night. Becoming colder with heavy fall of snow, heaviest during Tue afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min -5°C on Tue night). Mainly near gales.
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.