– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Fri 16 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Fri 16 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Fri 16 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Mild temperatures (max 9°C on Fri night, min 6°C on Sun night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Freeze-thaw conditions (max 8°C on Mon afternoon, min -3°C on Wed night). Winds decreasing (fresh winds from the WNW on Mon night, calm by Wed afternoon). | ||||||||||||||||
Fri 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | | | | | | |  |  |  | | | | | |
clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | cloudy | some clouds | clear | some clouds | cloudy | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 8 | 9 | 8 | 8 | 8 | 7 | 7 | 6 | 7 | 8 | 8 | 4 | 2 | 0 | -1 | 0 | -2 |
min °C | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 6 | 7 | 8 | 5 | 3 | 1 | -1 | -1 | 0 | -3 |
5 | 5 | 7 | 7 | 6 | 5 | 5 | 5 | 5 | 6 | 0 | -2 | -3 | -6 | -7 | 0 | -10 | |
3550 | 3650 | 3550 | 3600 | 3500 | 3450 | 3550 | 3400 | 3500 | 3650 | 3600 | 3300 | 2750 | 2100 | 1950 | 2050 | 1650 | |
Cloud base (m) | 8650 | 9500 | 6550 | 5250 | 8300 | 5750 | |||||||||||
 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — |
 | 4:40 | — | — | 4:42 | — | — | 4:44 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Mild temperatures (max 9°C on Fri night, min 6°C on Sun night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 8°C on Mon afternoon, min -3°C on Wed night). Winds decreasing (fresh winds from the WNW on Mon night, calm by Wed 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.