– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Thu 13 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Thu 13 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Thu 13 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 6mm) on Thu morning. Becoming colder with heavy fall of snow, heaviest during Thu afternoon. Freeze-thaw conditions (max 2°C on Thu morning, min -3°C on Thu night). Winds decreasing (near gales from the WSW on Thu afternoon, light winds from the S by Sat afternoon). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 2°C on Sun morning, min -9°C on Tue morning). Winds decreasing (fresh winds from the S on Mon morning, light winds from the N by Tue night). | |||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | |  |  | |  | | | | | |  | |
mod. rain | mod. snow | heavy snow | light snow | light snow | mod. snow | light snow | light snow | some clouds | cloudy | light snow | light snow | light snow | light snow | mod. snow | light snow | light snow | snow shwrs | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 7 | 13 | 5 | 3 | 9 | 2 | 2 | — | — | 1 | 3 | 3 | 5 | 6 | 2 | 2 | 2 | |
6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 2 | 1 | 0 | -3 | -1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | -1 | -3 | -6 | -9 | -9 | -8 |
min°C | 2 | 0 | -3 | -3 | -2 | -1 | 1 | 1 | 1 | 2 | 1 | 0 | -1 | -5 | -8 | -9 | -9 | -9 |
-5 | -7 | -9 | -9 | -9 | -9 | -4 | -3 | -3 | -3 | -4 | -5 | -7 | -12 | -14 | -15 | -15 | -15 | |
2550 | 2250 | 1750 | 1550 | 1800 | 1900 | 2350 | 2350 | 2300 | 2350 | 2350 | 2250 | 2050 | 1500 | 1000 | 900 | 850 | 800 | |
Cloud base (m) | 500 | 550 | 550 | 600 | 550 | 550 | 550 | 550 | 550 | 1450 | 1550 | 550 | 550 | 550 | 550 | 650 | 1500 | 600 |
 | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — |
 | — | 4:30 | — | — | 4:29 | — | — | 4:27 | — | — | 4:25 | — | — | 4:24 | — | — | 4:23 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 6mm) on Thu morning. Becoming colder with heavy fall of snow, heaviest during Thu afternoon. Freeze-thaw conditions (max 2°C on Thu morning, min -3°C on Thu night). Winds decreasing (near gales from the WSW on Thu afternoon, light winds from the S by Sat afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 2°C on Sun morning, min -9°C on Tue morning). Winds decreasing (fresh winds from the S on Mon morning, light winds from the N by Tue 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.