– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Sat 29 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sat 29 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sat 29 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 0°C on Sun night, min -6°C on Sat afternoon). Winds increasing (light winds from the NNE on Sat afternoon, fresh winds from the NW by Sun night). | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Thu morning. Temperatures will be below freezing (max -1°C on Thu morning, min -4°C on Tue afternoon). Winds increasing (light winds from the N on Tue night, strong winds from the W by Thu afternoon). | ||||||||||||||||
Sat 29 | Sunday 30 | Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | |  |  | | | | | | |  |  | | |
some clouds | clear | some clouds | clear | some clouds | some clouds | cloudy | light snow | some clouds | clear | some clouds | some clouds | cloudy | light snow | mod. snow | light snow | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 4 | — | — | — | — | — | 2 | 8 | 5 | 2 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -5 | -3 | -3 | -1 | 0 | -1 | -2 | -3 | -4 | -4 | -3 | -3 | -3 | -2 | -1 | -1 | -2 |
min°C | -6 | -5 | -3 | -3 | -2 | -1 | -3 | -6 | -5 | -4 | -3 | -4 | -4 | -3 | -2 | -1 | -3 |
-9 | -10 | -7 | -8 | -9 | -6 | -10 | -10 | -8 | -10 | -7 | -10 | -10 | -10 | -9 | -9 | -10 | |
1300 | 1200 | 1350 | 1450 | 1400 | 1300 | 1300 | 1200 | 1000 | 1100 | 1150 | 1200 | 1200 | 1250 | 1550 | 1700 | 1600 | |
Cloud base (m) | 2900 | 8850 | 6550 | 5150 | 1750 | 950 | 600 | 600 | 650 | 650 | 650 | 1550 | 700 | 600 | 550 | 550 | |
 | — | — | 7:37 | — | — | 7:39 | — | — | 7:39 | — | — | 7:41 | — | — | 7:43 | — | — |
 | 4:15 | — | — | 4:14 | — | — | 4:14 | — | — | 4:13 | — | — | 4:13 | — | — | 4:12 | — |
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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 0°C on Sun night, min -6°C on Sat afternoon). Winds increasing (light winds from the NNE on Sat afternoon, fresh winds from the NW by Sun night).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Thu morning. Temperatures will be below freezing (max -1°C on Thu morning, min -4°C on Tue afternoon). Winds increasing (light winds from the N on Tue night, strong winds from the W by Thu 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.