– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Tue 18 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Tue 18 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Tue 18 Nov 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. Freeze-thaw conditions (max 2°C on Wed afternoon, min -6°C on Tue morning). Winds increasing (light winds from the NE on Tue afternoon, fresh winds from the S by Wed night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max 0°C on Sun afternoon, min -9°C on Sun night). Winds increasing (moderate winds from the WSW on Sun morning, stormy winds from the SSW by Sun night). | |||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  |  | | | |  |  | | |  | | | | |
cloudy | some clouds | clear | some clouds | cloudy | cloudy | snow shwrs | some clouds | cloudy | cloudy | light snow | mod. snow | light snow | light snow | heavy snow | light snow | light snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | 1 | — | — | — | 2 | 6 | 2 | 3 | 16 | 2 | 4 | 19 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -5 | -5 | 1 | 1 | 2 | 0 | -4 | -4 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | 0 | -1 |
min°C | -6 | -5 | -4 | 1 | 0 | -4 | -5 | -5 | -3 | -1 | -1 | -1 | -1 | -1 | -2 | -2 | -1 | -9 |
-12 | -9 | -9 | -3 | -5 | -11 | -12 | -11 | -8 | -8 | -8 | -8 | -8 | -8 | -8 | -8 | -9 | -22 | |
1050 | 1100 | 1300 | 2450 | 2450 | 1800 | 1400 | 1350 | 1500 | 1850 | 2050 | 2000 | 2050 | 2000 | 2000 | 1750 | 1950 | 1850 | |
Cloud base (m) | 600 | 650 | 700 | 6450 | 6400 | 650 | 750 | 700 | 850 | 600 | 600 | 600 | 600 | 550 | 600 | 600 | 550 | 550 |
 | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — | 7:26 | — | — | 7:28 | — | — |
 | — | 4:23 | — | — | 4:22 | — | — | 4:22 | — | — | 4:21 | — | — | 4:20 | — | — | 4:19 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 2°C on Wed afternoon, min -6°C on Tue morning). Winds increasing (light winds from the NE on Tue afternoon, fresh winds from the S by Wed night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max 0°C on Sun afternoon, min -9°C on Sun night). Winds increasing (moderate winds from the WSW on Sun morning, stormy winds from the SSW by Sun night).
This table gives the weather forecast for South Twin Sister at the specific elevation of 2134 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.