– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 16 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 16 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 16 May 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 Sat afternoon. Temperatures will be below freezing (max 0°C on Sun afternoon, min -6°C on Sat afternoon). Wind will be generally light. | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 6°C on Wed night, min -2°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | | |  | | | | |  | | | | |
snow shwrs | snow shwrs | clear | some clouds | some clouds | some clouds | clear | some clouds | light snow | light snow | some clouds | clear | some clouds | clear | clear | clear | clear | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
3 | 1 | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -5 | -4 | -2 | 0 | 0 | -1 | 0 | 0 | -2 | -1 | 0 | 2 | 5 | 6 | 5 | 6 | 6 |
min °C | -6 | -5 | -4 | -1 | -1 | -2 | -1 | -1 | -2 | -2 | 0 | 1 | 4 | 5 | 5 | 6 | 4 |
-12 | -11 | -10 | -3 | -4 | -5 | -4 | -6 | -7 | -7 | -4 | -2 | 4 | 4 | 3 | 3 | 2 | |
1350 | 1200 | 1550 | 2050 | 2050 | 1850 | 2100 | 2050 | 1800 | 1950 | 2150 | 2700 | 3050 | 3450 | 3200 | 3050 | 3050 | |
Cloud base (m) | 650 | 650 | 850 | 850 | 1900 | 1850 | 2100 | 600 | 700 | 1900 | 1800 | 2150 | 6450 | 8500 | |||
 | — | — | 5:24 | — | — | 5:22 | — | — | 5:22 | — | — | 5:20 | — | — | 5:18 | — | — |
 | — | 8:43 | — | — | 8:44 | — | — | 8:45 | — | — | 8:46 | — | — | 8:47 | — | — | 8:50 |
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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 Sat afternoon. Temperatures will be below freezing (max 0°C on Sun afternoon, min -6°C on Sat afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 6°C on Wed night, min -2°C on Tue afternoon). Wind will be generally light.
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.