– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Wed 08 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Wed 08 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 08 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 5mm), mostly falling on Sat afternoon. Mild temperatures (max 9°C on Thu night, min 3°C on Wed night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 6mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Tue afternoon. Freeze-thaw conditions (max 3°C on Sat night, min -3°C on Tue morning). Winds increasing (calm on Sat night, fresh winds from the WSW by Tue afternoon). | ||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  |  | |  | | |  |  | |  |  | |  | |
clear | clear | clear | clear | some clouds | cloudy | light rain | light rain | light rain | rain shwrs | some clouds | light rain | cloudy | light snow | light snow | light snow | mod. snow | mod. snow | heavy snow | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 7 | 7 | 16 | |
— | — | — | — | — | — | 0.1 | 0.4 | 4 | 6 | — | 0.6 | — | — | — | — | — | — | — | |
max °C | 4 | 5 | 8 | 9 | 8 | 8 | 8 | 5 | 3 | 3 | 2 | 2 | 1 | 0 | -1 | -1 | -2 | -3 | -3 |
min °C | 3 | 5 | 8 | 9 | 8 | 8 | 5 | 4 | 3 | 2 | 2 | 2 | 0 | 0 | -1 | -2 | -3 | -3 | -6 |
3 | 4 | 8 | 9 | 7 | 7 | 5 | 4 | 3 | 2 | 2 | 0 | -4 | -3 | -5 | -7 | -8 | -8 | -14 | |
2350 | 2400 | 2650 | 2700 | 2600 | 2500 | 2400 | 2200 | 2050 | 2050 | 1900 | 1900 | 1700 | 1450 | 1300 | 1200 | 1050 | 1000 | 600 | |
Cloud base (m) | 9100 | 9100 | 5200 | 2450 | 2300 | 750 | 550 | 700 | 700 | 650 | 550 | 600 | 600 | 600 | 600 | 550 | 600 | ||
 | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — |
 | — | — | 7:50 | — | — | 7:51 | — | — | 7:52 | — | — | 7:53 | — | — | 7:55 | — | — | 7:57 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 5mm), mostly falling on Sat afternoon. Mild temperatures (max 9°C on Thu night, min 3°C on Wed night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 6mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Tue afternoon. Freeze-thaw conditions (max 3°C on Sat night, min -3°C on Tue morning). Winds increasing (calm on Sat night, fresh winds from the WSW by Tue afternoon).
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.