– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Fri 30 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Fri 30 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Fri 30 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 Sun afternoon. Freeze-thaw conditions (max 1°C on Fri night, min -5°C on Sun night). Winds decreasing (near gales from the S on Fri morning, light winds from the SSW by Fri night). | Days 4–6 Weather SummaryA light covering of new snow mostly falling on Mon morning. Freeze-thaw conditions (max 6°C on Wed night, min -4°C on Mon morning). Winds decreasing (fresh winds from the SSW on Tue night, light winds from the WSW by Wed night). | |||||||||||||||||
Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  | | | |  |  |  |  | |  | | |
mod. snow | light snow | snow shwrs | light snow | snow shwrs | light snow | mod. snow | heavy snow | light snow | light snow | light snow | cloudy | some clouds | light rain | some clouds | some clouds | rain shwrs | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
7 | 4 | 1 | 2 | 1 | 2 | 10 | 12 | 1 | 4 | 3 | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | — | — | 0.1 | — | |
max °C | -1 | -1 | 1 | 1 | 1 | 1 | -3 | -4 | -4 | -4 | -2 | 1 | 3 | 5 | 5 | 5 | 4 | 6 |
min °C | -2 | -1 | -1 | 1 | 1 | -3 | -3 | -4 | -5 | -4 | -3 | -1 | 2 | 4 | 5 | 4 | 4 | 4 |
-12 | -9 | -5 | -4 | -6 | -12 | -10 | -12 | -12 | -11 | -8 | -6 | -1 | 1 | 1 | -1 | -1 | 0 | |
1650 | 1900 | 2050 | 2300 | 2250 | 2100 | 1450 | 1550 | 1450 | 1400 | 1500 | 2050 | 2550 | 2900 | 2950 | 3000 | 2850 | 2850 | |
Cloud base (m) | 1750 | 600 | 650 | 1550 | 750 | 2600 | 600 | 600 | 650 | 600 | 600 | 600 | 900 | 1600 | 5700 | 3100 | ||
 | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — |
 | — | 5:02 | — | — | 5:04 | — | — | 5:06 | — | — | 5:07 | — | — | 5:08 | — | — | 5:10 | — |
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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 Sun afternoon. Freeze-thaw conditions (max 1°C on Fri night, min -5°C on Sun night). Winds decreasing (near gales from the S on Fri morning, light winds from the SSW by Fri night).
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Mon morning. Freeze-thaw conditions (max 6°C on Wed night, min -4°C on Mon morning). Winds decreasing (fresh winds from the SSW on Tue night, light winds from the WSW by Wed 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.