– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Mon 11 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Mon 11 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Mon 11 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMild with moderate rain (total 12mm) on Wed morning, Becoming colder with a light covering of snow, mostly falling on Wed afternoon. Very mild (max 17°C on Tue afternoon, min 1°C on Wed night). Winds increasing (calm on Mon afternoon, fresh winds from the W by Wed night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 2°C on Thu afternoon, min -3°C on Fri night). Wind will be generally light. | |||||||||||||||||
Monday 11 | Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  |  |  | |  |  |  |  | | |  | |
clear | some clouds | clear | some clouds | rain shwrs | rain shwrs | mod. rain | light snow | light snow | snow shwrs | rain shwrs | some clouds | cloudy | mod. snow | mod. snow | light snow | snow shwrs | snow shwrs | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | 4 | 3 | 1 | — | — | — | 9 | 7 | 2 | 2 | 1 | |
— | — | — | — | 0.2 | 2 | 10 | — | — | — | 0.1 | — | — | — | — | — | — | — | |
max °C | 6 | 10 | 14 | 14 | 17 | 14 | 6 | 2 | 1 | 0 | 2 | 2 | 0 | -1 | -2 | -2 | -1 | -1 |
min °C | 3 | 9 | 11 | 14 | 16 | 7 | 3 | 2 | 1 | 0 | 2 | 0 | 0 | -1 | -3 | -3 | -2 | -2 |
3 | 9 | 11 | 14 | 16 | 5 | 0 | -1 | -4 | -5 | -1 | -2 | -4 | -6 | -10 | -10 | -6 | -4 | |
2800 | 3150 | 3450 | 3700 | 3600 | 3150 | 2300 | 1900 | 1600 | 1550 | 1850 | 1750 | 1500 | 1300 | 1150 | 1150 | 1400 | 1150 | |
Cloud base (m) | 1800 | 7000 | 8500 | 6100 | 6550 | 3300 | 550 | 650 | 600 | 800 | 850 | 1550 | 600 | 600 | 600 | 600 | 650 | 900 |
 | 5:31 | — | — | 5:31 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:24 | — | — |
 | — | — | 8:36 | — | — | 8:37 | — | — | 8:38 | — | — | 8:39 | — | — | 8:42 | — | — | 8:43 |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mild with moderate rain (total 12mm) on Wed morning, Becoming colder with a light covering of snow, mostly falling on Wed afternoon. Very mild (max 17°C on Tue afternoon, min 1°C on Wed night). Winds increasing (calm on Mon afternoon, fresh winds from the W by Wed night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 2°C on Thu 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.