– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Wed 28 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Wed 28 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Wed 28 Jan 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 Fri afternoon. Freeze-thaw conditions (max 1°C on Fri night, min -5°C on Wed morning). Mainly strong winds. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -6°C on Sun night). Winds decreasing (near gales from the S on Sun morning, light winds from the WNW by Mon morning). | |||||||||||||||||
Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  |  | |  |  | |  |  | |  |  |  | |  | |
light snow | light snow | heavy snow | light snow | cloudy | mod. snow | light snow | mod. snow | some clouds | cloudy | light rain | cloudy | light snow | heavy snow | snow shwrs | some clouds | cloudy | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
1 | 2 | 12 | 5 | — | 6 | 3 | 7 | — | — | — | — | 5 | 11 | 9 | — | — | — | |
— | — | — | — | — | — | — | — | — | — | 0.5 | — | — | — | — | — | — | — | |
max °C | -5 | -3 | -2 | -2 | -1 | -1 | -2 | -1 | 1 | 3 | 3 | 3 | -1 | -4 | -4 | -6 | -4 | -3 |
min °C | -5 | -4 | -3 | -3 | -2 | -1 | -2 | -2 | 0 | 1 | 2 | 0 | -3 | -4 | -6 | -6 | -5 | -4 |
-12 | -12 | -10 | -10 | -8 | -8 | -11 | -8 | -3 | -5 | -3 | -8 | -11 | -11 | -12 | -10 | -10 | -9 | |
1300 | 1450 | 1700 | 1500 | 1800 | 1850 | 1750 | 1600 | 2200 | 2550 | 2450 | 2450 | 1950 | 1550 | 1350 | 1200 | 1300 | 1350 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 600 | 600 | 1600 | 600 | 900 | 6350 | 950 | 4500 | 2550 | 650 | 600 | 850 | 850 | 1650 |
 | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — |
 | — | 4:59 | — | — | 5:00 | — | — | 5:02 | — | — | 5:04 | — | — | 5:06 | — | — | 5:07 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 1°C on Fri night, min -5°C on Wed morning). Mainly strong winds.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -6°C on Sun night). Winds decreasing (near gales from the S on Sun morning, light winds from the WNW by Mon morning).
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.