– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Tue 17 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Tue 17 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Tue 17 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA heavy fall of snow, heaviest during Tue night. Becoming milder with moderate rain (total 19mm) on Tue night. Temperatures will be slightly above freezing (max 2°C on Tue morning, min 1°C on Wed morning). Winds increasing (moderate winds from the WSW on Wed morning, strong winds from the SSW by Thu night). | Days 4–6 Weather SummaryLight rain (total 2mm) on Fri morning. Becoming colder with heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 2°C on Fri morning, min -11°C on Sat morning). Winds decreasing (near gales from the SW on Fri morning, light winds from the WSW by Sun night). | |||||||||||||||||
Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  | | | |  | | |  | |  |  |  |  |  | |
light rain | light rain | mod. snow | mod. snow | light snow | mod. snow | light snow | mod. snow | light snow | light snow | light snow | heavy snow | light snow | snow shwrs | clear | clear | some clouds | cloudy | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | 8 | 6 | 3 | 10 | 4 | 6 | 5 | 3 | 4 | 24 | 3 | 4 | — | — | — | — | |
5 | 4 | 7 | — | — | — | — | — | 3 | 2 | — | — | — | — | — | — | — | — | |
max °C | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | -1 | -11 | -10 | -8 | -7 | -5 | -2 |
min °C | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | -10 | -11 | -10 | -9 | -8 | -6 | -4 |
-4 | -4 | -4 | -5 | -5 | -5 | -6 | -6 | -6 | -6 | -8 | -20 | -22 | -18 | -16 | -15 | -13 | -9 | |
2500 | 2550 | 2550 | 2350 | 2450 | 2300 | 2400 | 2450 | 2550 | 2450 | 2150 | 850 | 600 | 850 | 0 | 1100 | 1250 | 1550 | |
Cloud base (m) | 600 | 550 | 550 | 600 | 600 | 600 | 600 | 600 | 550 | 550 | 550 | 600 | 600 | 600 | 600 | 900 | 950 | 600 |
 | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — |
 | — | 7:15 | — | — | 7:16 | — | — | 7:17 | — | — | 7:20 | — | — | 7:21 | — | — | 7:22 | — |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Tue night. Becoming milder with moderate rain (total 19mm) on Tue night. Temperatures will be slightly above freezing (max 2°C on Tue morning, min 1°C on Wed morning). Winds increasing (moderate winds from the WSW on Wed morning, strong winds from the SSW by Thu night).
South Twin Sister Weather (Days 3-6):
Light rain (total 2mm) on Fri morning. Becoming colder with heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 2°C on Fri morning, min -11°C on Sat morning). Winds decreasing (near gales from the SW on Fri morning, light winds from the WSW by Sun night).
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.