– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Fri 03 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Fri 03 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 03 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Freeze-thaw conditions (max 6°C on Sun afternoon, min -4°C on Fri afternoon). Wind will be generally light. | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 3°C on Mon afternoon, min -10°C on Tue morning). Winds decreasing (strong winds from the SW on Mon night, calm by Wed morning). | ||||||||||||||||
Fri 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | | | | |  |  |  |  |  | | | | |
some clouds | some clouds | some clouds | clear | some clouds | some clouds | some clouds | some clouds | some clouds | rain shwrs | snow shwrs | snow shwrs | light snow | clear | clear | some clouds | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | 0.2 | — | — | — | — | — | — | — | |
max °C | -3 | -2 | -1 | 1 | 4 | 5 | 6 | 6 | 4 | 3 | 0 | -10 | -8 | -7 | -6 | -4 | -4 |
min °C | -4 | -3 | -2 | 1 | 2 | 5 | 6 | 5 | 3 | 2 | -9 | -10 | -9 | -7 | -7 | -4 | -4 |
-9 | -8 | -7 | -2 | 0 | 4 | 5 | 2 | -2 | -4 | -18 | -21 | -18 | -13 | -10 | -4 | -4 | |
1550 | 1650 | 1800 | 2400 | 2800 | 2950 | 2950 | 2850 | 2600 | 2400 | 800 | 850 | 1100 | 800 | 1300 | 1600 | 1600 | |
Cloud base (m) | 1600 | 950 | 950 | 1850 | 6150 | 6100 | 6450 | 6500 | 5950 | 850 | 700 | 700 | 700 | 600 | 750 | 1950 | 2400 |
 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — |
 | 7:40 | — | — | 7:42 | — | — | 7:44 | — | — | 7:45 | — | — | 7:46 | — | — | 7:47 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Freeze-thaw conditions (max 6°C on Sun afternoon, min -4°C on Fri afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 3°C on Mon afternoon, min -10°C on Tue morning). Winds decreasing (strong winds from the SW on Mon night, calm by Wed morning).
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.