– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Tue 19 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Tue 19 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Tue 19 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 2mm), mostly falling on Tue afternoon. Very mild (max 11°C on Thu afternoon, min 3°C on Tue afternoon). Wind will be generally light. | Days 5–7 Weather SummaryMild with moderate rain (total 14mm) on Sun night, Becoming colder with a light covering of snow, mostly falling on Sun night. Freeze-thaw conditions (max 11°C on Fri afternoon, min 0°C on Mon morning). Winds increasing (calm on Fri night, fresh winds from the S by Sun night). | ||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  | | | | | | |  | |  | |
rain shwrs | rain shwrs | some clouds | some clouds | some clouds | clear | clear | clear | clear | clear | some clouds | some clouds | rain shwrs | some clouds | cloudy | rain shwrs | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | |
1.6 | 0.7 | — | — | — | — | — | — | — | — | — | — | 0.1 | — | — | 1.8 | 12 | |
max °C | 4 | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 8 | 11 | 10 | 8 | 9 | 8 | 6 | 7 | 4 |
min °C | 3 | 3 | 3 | 7 | 8 | 9 | 11 | 9 | 8 | 10 | 8 | 7 | 9 | 6 | 5 | 5 | 1 |
1 | 1 | 3 | 6 | 8 | 9 | 10 | 8 | 7 | 9 | 7 | 6 | 7 | 4 | 3 | 3 | -4 | |
2050 | 2500 | 2550 | 2800 | 3000 | 2950 | 3050 | 2850 | 3000 | 3200 | 3200 | 2850 | 3000 | 2700 | 2600 | 2500 | 1900 | |
Cloud base (m) | 750 | 1600 | 900 | 1950 | 7050 | 5750 | 4900 | 8900 | 6650 | 2300 | 8250 | 2400 | 1800 | 550 | |||
 | — | — | 5:20 | — | — | 5:18 | — | — | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — |
 | — | 8:46 | — | — | 8:47 | — | — | 8:50 | — | — | 8:51 | — | — | 8:52 | — | — | 8:52 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 2mm), mostly falling on Tue afternoon. Very mild (max 11°C on Thu afternoon, min 3°C on Tue afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mild with moderate rain (total 14mm) on Sun night, Becoming colder with a light covering of snow, mostly falling on Sun night. Freeze-thaw conditions (max 11°C on Fri afternoon, min 0°C on Mon morning). Winds increasing (calm on Fri night, fresh winds from the S by Sun night).
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.