– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Tue 21 Jan Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 9 pm Tue 21 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Tue 21 Jan 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. Freeze-thaw conditions (max 1°C on Wed night, min -6°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Freeze-thaw conditions (max 6°C on Mon afternoon, min -3°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
night | AM | 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 | light snow | snow shwrs | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | 1.0 | 2.0 | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -4 | -1 | 0 | 1 | -1 | -4 | -3 | -3 | -3 | -3 | -3 | -2 | 0 | 1 | 2 | 3 | 5 | 6 | 7 |
min°C | -6 | -3 | 0 | 0 | -2 | -4 | -5 | -3 | -3 | -3 | -3 | -3 | -1 | 0 | 1 | 2 | 5 | 6 | 5 |
-8 | -3 | 0 | -3 | -7 | -8 | -8 | -7 | -7 | -6 | -3 | -3 | -1 | 0 | 1 | 2 | 5 | 6 | 4 | |
400 | 950 | 1500 | 2100 | 1350 | 900 | 700 | 1000 | 1000 | 0 | 1000 | 1050 | 1150 | 3100 | 3350 | 3450 | 3350 | 3350 | 3550 | |
Cloud base (m) | 700 | 750 | 2800 | 8900 | 800 | 600 | 8850 | 8800 | 9850 | ||||||||||
 | — | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:46 | — | — | 7:43 | — | — | 7:43 | — | — |
 | — | — | 4:50 | — | — | 4:52 | — | — | 4:52 | — | — | 4:54 | — | — | 4:55 | — | — | 4:58 | — |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 1°C on Wed night, min -6°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 6°C on Mon afternoon, min -3°C on Fri night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.
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