– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Tue 27 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Tue 27 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Tue 27 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 Tue night. Freeze-thaw conditions (max 1°C on Tue morning, min -5°C on Tue night). Winds decreasing (strong winds from the S on Tue night, light winds from the SSW by Thu afternoon). | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 4°C on Sat afternoon, min -3°C on Fri morning). Winds decreasing (strong winds from the S on Fri morning, calm by Fri night). | |||||||||||||||||
Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | Sunday 1 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | | | | |  | |  | |  | | | | |
cloudy | cloudy | light snow | light snow | light snow | mod. snow | light snow | light snow | mod. snow | light snow | heavy snow | light snow | some clouds | cloudy | cloudy | cloudy | cloudy | cloudy | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | 5 | 5 | 1 | 9 | 4 | 1 | 7 | 2 | 11 | 4 | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 1 | 1 | -3 | -5 | -4 | -3 | -2 | -1 | 1 | -1 | -2 | -1 | 2 | 4 | 4 | 4 | 2 | 1 |
min °C | 0 | 1 | -5 | -5 | -4 | -3 | -3 | -2 | -1 | -3 | -2 | -2 | 1 | 3 | 4 | 3 | 2 | -3 |
-5 | -4 | -12 | -12 | -12 | -9 | -9 | -8 | -7 | -12 | -10 | -7 | -1 | 0 | 0 | -2 | -3 | -9 | |
2100 | 2300 | 1300 | 1200 | 1400 | 1550 | 1550 | 1800 | 1900 | 2000 | 1600 | 1750 | 2650 | 3100 | 2650 | 2650 | 2500 | 2150 | |
Cloud base (m) | 2850 | 4950 | 2150 | 600 | 650 | 600 | 600 | 600 | 600 | 2400 | 850 | 600 | 650 | 1750 | 2900 | 5350 | 2950 | |
 | 7:43 | — | — | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — |
 | — | 4:58 | — | — | 4:59 | — | — | 5:00 | — | — | 5:02 | — | — | 5:04 | — | — | 5:06 | — |
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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 Tue night. Freeze-thaw conditions (max 1°C on Tue morning, min -5°C on Tue night). Winds decreasing (strong winds from the S on Tue night, light winds from the SSW by Thu afternoon).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 4°C on Sat afternoon, min -3°C on Fri morning). Winds decreasing (strong winds from the S on Fri morning, calm by Fri 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.