– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Sat 11 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Sat 11 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sat 11 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of snow on Sat afternoon. Freezing level rising with drizzle on Sun afternoon. Freeze-thaw conditions (max 4°C on Sat morning, min -3°C on Mon night). Wind will be generally light. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -3°C on Tue morning, min -7°C on Tue night). Winds decreasing (strong winds from the S on Tue night, light winds from the WNW by Wed night). | |||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | | |  | |  |  | |  |  |  | |  | |
cloudy | light snow | rain shwrs | rain shwrs | rain shwrs | rain shwrs | cloudy | cloudy | light snow | light snow | mod. snow | heavy snow | mod. snow | snow shwrs | some clouds | some clouds | snow shwrs | cloudy | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 1 | — | — | — | — | — | — | 1 | 3 | 7 | 19 | 7 | 7 | — | — | 2 | — | |
— | — | 0.1 | 0.1 | 0.9 | 0.7 | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 4 | 2 | 3 | 3 | 3 | 3 | -1 | -1 | -2 | -3 | -3 | -3 | -7 | -6 | -5 | -5 | -4 | -4 |
min °C | 2 | 2 | 2 | 3 | 3 | 0 | -1 | -1 | -3 | -4 | -3 | -7 | -7 | -6 | -6 | -6 | -4 | -4 |
2 | 0 | 2 | 3 | 2 | -4 | -5 | -5 | -8 | -11 | -11 | -15 | -14 | -11 | -9 | -10 | -8 | -9 | |
1950 | 1850 | 2000 | 2100 | 2050 | 1750 | 1300 | 1350 | 1100 | 1000 | 1050 | 500 | 600 | 750 | 0 | 850 | 1050 | 700 | |
Cloud base (m) | 2150 | 550 | 550 | 1700 | 700 | 650 | 600 | 600 | 600 | 550 | 550 | 550 | 550 | 600 | 800 | 600 | 600 | 650 |
 | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — |
 | — | 7:52 | — | — | 7:53 | — | — | 7:55 | — | — | 7:57 | — | — | 7:59 | — | — | — | 8:00 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of snow on Sat afternoon. Freezing level rising with drizzle on Sun afternoon. Freeze-thaw conditions (max 4°C on Sat morning, min -3°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -3°C on Tue morning, min -7°C on Tue night). Winds decreasing (strong winds from the S on Tue night, light winds from the WNW by Wed 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.