– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Sun 23 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Sun 23 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Sun 23 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of new snow. Temperatures will be below freezing (max -1°C on Wed morning, min -9°C on Sun night). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Wed night, min -8°C on Fri night). Winds decreasing (near gales from the S on Thu afternoon, calm by Fri afternoon). | ||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | | | |  | | |  | | |  |  | |  | |
snow shwrs | light snow | some clouds | some clouds | cloudy | cloudy | some clouds | cloudy | cloudy | light snow | light snow | light snow | heavy snow | cloudy | cloudy | mod. snow | clear | clear | clear | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
1 | 1 | — | — | — | — | — | — | — | 5 | 2 | 3 | 14 | — | — | 8 | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -7 | -9 | -8 | -6 | -5 | -5 | -2 | -1 | -1 | -1 | -1 | -4 | -4 | -6 | -6 | -6 | -8 | -7 | -4 |
min°C | -9 | -9 | -9 | -8 | -6 | -5 | -4 | -2 | -1 | -2 | -2 | -4 | -6 | -6 | -6 | -8 | -8 | -8 | -6 |
-16 | -16 | -14 | -12 | -11 | -9 | -10 | -6 | -5 | -7 | -11 | -14 | -14 | -11 | -6 | -15 | -14 | -14 | -10 | |
800 | 900 | 900 | 750 | 1150 | 1050 | 1350 | 1650 | 1900 | 1750 | 1950 | 1500 | 1400 | 1200 | 1200 | 1050 | 650 | 250 | 0 | |
Cloud base (m) | 1750 | 800 | 850 | 1750 | 2500 | 1650 | 600 | 850 | 1500 | 600 | 600 | 550 | 600 | 600 | 750 | 550 | 3650 | ||
 | — | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:37 | — | — |
 | — | — | 4:17 | — | — | 4:17 | — | — | 4:16 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Temperatures will be below freezing (max -1°C on Wed morning, 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 Thu night. Temperatures will be below freezing (max -1°C on Wed night, min -8°C on Fri night). Winds decreasing (near gales from the S on Thu afternoon, calm by Fri afternoon).
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.