– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Wed 04 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Wed 04 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Wed 04 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of new snow. Very mild (max 16°C on Thu afternoon, min 2°C on Fri night). Winds increasing (calm on Wed night, fresh winds from the SSE by Fri night). | Days 4–6 Weather SummaryHeavy rain (total 25mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Sat night. Freeze-thaw conditions (max 3°C on Sat morning, min -3°C on Sun night). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun morning). | |||||||||||||||||
Wednesday 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  |  |  |  | | | | | |  | |
some clouds | clear | clear | some clouds | clear | clear | some clouds | cloudy | snow shwrs | light snow | heavy rain | mod. snow | cloudy | cloudy | mod. snow | light snow | some clouds | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | 1 | 3 | — | 6 | — | — | 9 | 3 | — | — | |
— | — | — | — | — | — | — | — | 0.1 | 3 | 13 | 8 | — | — | — | — | — | — | |
max °C | 12 | 12 | 13 | 15 | 16 | 12 | 7 | 6 | 4 | 3 | 3 | 3 | -1 | -1 | -2 | -3 | -3 | 0 |
min °C | 12 | 11 | 11 | 14 | 13 | 8 | 7 | 5 | 2 | 2 | 3 | -1 | -1 | -1 | -3 | -3 | -3 | -3 |
10 | 10 | 10 | 14 | 12 | 6 | 4 | 1 | -4 | -4 | -3 | -4 | -4 | -4 | -6 | -9 | -6 | -8 | |
3350 | 3350 | 3500 | 3700 | 3750 | 3200 | 2750 | 2450 | 2000 | 2050 | 2200 | 1550 | 1350 | 1400 | 1100 | 1050 | 1000 | 750 | |
Cloud base (m) | 4650 | 7750 | 8400 | 9250 | 8800 | 6100 | 1900 | 700 | 600 | 600 | 1500 | 750 | 600 | 600 | 600 | 700 | ||
 | 7:33 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — |
 | — | 5:10 | — | — | 5:12 | — | — | 5:14 | — | — | 5:15 | — | — | 5:16 | — | — | 5:19 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Very mild (max 16°C on Thu afternoon, min 2°C on Fri night). Winds increasing (calm on Wed night, fresh winds from the SSE by Fri night).
South Twin Sister Weather (Days 3-6):
Heavy rain (total 25mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Sat night. Freeze-thaw conditions (max 3°C on Sat morning, min -3°C on Sun night). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun morning).
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.