– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Sun 30 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sun 30 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sun 30 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA light covering of new snow mostly falling on Mon afternoon. Temperatures will be below freezing (max 0°C on Sun night, min -6°C on Mon night). Mainly fresh winds. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Fri morning. Temperatures will be below freezing (max 0°C on Thu night, min -7°C on Fri afternoon). Winds increasing (light winds from the NNW on Wed night, gales from the WSW by Thu night). | ||||||||||||||||
Sun 30 | Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | Friday 5 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  | | | |  |  | |  |  | | | |
some clouds | some clouds | cloudy | light snow | light snow | some clouds | clear | some clouds | cloudy | light snow | cloudy | mod. snow | mod. snow | heavy snow | heavy snow | light snow | heavy snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | 2 | 4 | — | — | — | — | 2 | — | 6 | 6 | 13 | 16 | 3 | 11 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -1 | 0 | -2 | -3 | -4 | -4 | -3 | -3 | -3 | -4 | -2 | -1 | -1 | 0 | -4 | -5 | -7 |
min°C | -2 | -2 | -3 | -3 | -6 | -5 | -4 | -3 | -4 | -4 | -2 | -2 | -1 | -2 | -6 | -7 | -7 |
-6 | -9 | -10 | -10 | -6 | -11 | -9 | -6 | -9 | -10 | -6 | -9 | -7 | -11 | -18 | -16 | -15 | |
1450 | 1500 | 1100 | 1200 | 1200 | 1100 | 1150 | 1150 | 1250 | 1100 | 1050 | 1450 | 1550 | 2100 | 1400 | 1250 | 1000 | |
Cloud base (m) | 5100 | 2400 | 1900 | 850 | 600 | 600 | 650 | 650 | 600 | 750 | 600 | 600 | 600 | 550 | 500 | 550 | 550 |
 | — | — | 7:39 | — | — | 7:39 | — | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — |
 | 4:14 | — | — | 4:14 | — | — | 4:13 | — | — | 4:13 | — | — | 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 0°C on Sun night, min -6°C on Mon night). Mainly fresh winds.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri morning. Temperatures will be below freezing (max 0°C on Thu night, min -7°C on Fri afternoon). Winds increasing (light winds from the NNW on Wed night, gales from the WSW by Thu 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.