– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Thu 11 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Thu 11 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Thu 11 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA light covering of new snow mostly falling on Sat night. Freeze-thaw conditions (max 4°C on Sat afternoon, min -1°C on Sat night). Winds increasing (moderate winds from the W on Fri night, near gales from the SSW by Sat night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Mon morning, min -11°C on Tue night). Winds increasing (moderate winds from the SW on Mon night, gales from the WSW by Tue night). | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | | |  | |  | |  | | |  |  | | | | |
light snow | cloudy | cloudy | some clouds | clear | cloudy | light snow | light snow | cloudy | mod. snow | light snow | mod. snow | mod. snow | mod. snow | heavy snow | heavy snow | light snow | mod. snow | heavy snow | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
1 | — | — | — | — | — | 3 | 3 | — | 9 | 5 | 8 | 10 | 6 | 12 | 19 | 3 | 8 | 24 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 1 | 1 | 1 | 2 | 3 | 4 | 3 | 0 | 0 | 1 | 2 | 1 | -4 | -3 | -2 | -9 | -9 | -7 | -8 |
min°C | 0 | 1 | 0 | 2 | 3 | 4 | -1 | -1 | 0 | 0 | 2 | -3 | -6 | -4 | -4 | -11 | -10 | -8 | -9 |
-7 | -6 | -7 | -4 | -3 | -1 | -8 | -8 | -7 | -8 | -6 | -11 | -14 | -14 | -14 | -24 | -19 | -17 | -20 | |
2200 | 2250 | 2150 | 2800 | 2750 | 2800 | 2400 | 1950 | 2100 | 2200 | 2600 | 2350 | 1150 | 1550 | 1750 | 750 | 700 | 800 | 850 | |
Cloud base (m) | 600 | 600 | 650 | 1800 | 650 | 6150 | 650 | 800 | 600 | 550 | 550 | 550 | 500 | 500 | 550 | 600 | 500 | 500 | |
 | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — | 7:54 | — | — | 7:54 | — | — | 7:54 | — | — |
 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A light covering of new snow mostly falling on Sat night. Freeze-thaw conditions (max 4°C on Sat afternoon, min -1°C on Sat night). Winds increasing (moderate winds from the W on Fri night, near gales from the SSW by Sat night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Mon morning, min -11°C on Tue night). Winds increasing (moderate winds from the SW on Mon night, gales from the WSW 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.