– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Mon 01 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Mon 01 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Mon 01 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA light covering of new snow mostly falling on Mon afternoon. Temperatures will be below freezing (max -1°C on Mon morning, min -5°C on Mon night). Winds decreasing (fresh winds from the NW on Mon morning, calm by Mon night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Sat night. Temperatures will be below freezing (max 0°C on Thu night, min -5°C on Fri night). Mainly near gales. | |||||||||||||||||
Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | Friday 5 | Saturday 6 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | |  | | |  | | | |  | |  | |
cloudy | light snow | light snow | some clouds | some clouds | some clouds | cloudy | some clouds | cloudy | light snow | light snow | mod. snow | light snow | light snow | mod. snow | snow shwrs | some clouds | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 3 | 5 | — | — | — | — | — | — | 3 | 3 | 9 | 5 | 4 | 6 | 5 | — | 12 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -1 | -2 | -4 | -5 | -4 | -3 | -4 | -2 | -2 | -2 | -2 | 0 | -1 | -3 | -5 | -5 | -4 | -2 |
min°C | -3 | -4 | -5 | -5 | -4 | -3 | -4 | -4 | -2 | -2 | -2 | -2 | -2 | -4 | -5 | -5 | -4 | -4 |
-10 | -11 | -12 | -10 | -9 | -6 | -10 | -9 | -6 | -8 | -8 | -9 | -11 | -13 | -14 | -13 | -11 | -10 | |
1100 | 1450 | 1200 | 1000 | 1100 | 900 | 1150 | 1150 | 1200 | 1350 | 1400 | 1700 | 1900 | 1750 | 1350 | 1350 | 1350 | 1350 | |
Cloud base (m) | 1850 | 700 | 600 | 600 | 600 | 650 | 650 | 850 | 600 | 600 | 600 | 600 | 550 | 550 | 600 | 600 | 700 | 750 |
 | 7:39 | — | — | 7:39 | — | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — | 7:45 | — | — |
 | — | 4:14 | — | — | 4:13 | — | — | 4:13 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A light covering of new snow mostly falling on Mon afternoon. Temperatures will be below freezing (max -1°C on Mon morning, min -5°C on Mon night). Winds decreasing (fresh winds from the NW on Mon morning, calm by Mon night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sat night. Temperatures will be below freezing (max 0°C on Thu night, min -5°C on Fri night). Mainly near gales.
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.