– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 9 pm Tue 10 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Tue 10 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummarySome drizzle, heaviest during Tue night. Freeze-thaw conditions (max 7°C on Thu night, min 0°C on Fri afternoon). Winds decreasing (gales from the S on Tue night, moderate winds from the SSE by Thu night). | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Fri night. Temperatures will be below freezing (max -1°C on Fri night, min -5°C on Sun night). Winds decreasing (strong winds from the SSW on Sun night, light winds from the SW by Mon afternoon). | |||||||||||||||
Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | | | | |  |  | |  |  | |  | |
light rain | cloudy | cloudy | cloudy | cloudy | cloudy | cloudy | cloudy | cloudy | mod. snow | some clouds | cloudy | light snow | light snow | light snow | snow shwrs | |
Cloud base (m) | 650 | 2250 | 6100 | 6300 | 5600 | 5750 | 4800 | 3100 | 2600 | 500 | 650 | 600 | 1400 | 550 | 550 | 600 |
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | 6 | — | — | 3 | 4 | 4 | 2 |
mm | 1.1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 5 | 5 | 6 | 5 | 4 | 6 | 7 | 5 | 1 | -1 | -3 | -2 | -1 | -1 | -2 | -4 |
min °C | 4 | 5 | 5 | 4 | 4 | 5 | 6 | 3 | 0 | -3 | -4 | -3 | -2 | -2 | -3 | -5 |
chill °C | -3 | -2 | -1 | -2 | -2 | 0 | 2 | -4 | -7 | -11 | -13 | -10 | -10 | -10 | -11 | -14 |
Freezing level m | 3050 | 2900 | 2850 | 2900 | 2700 | 2800 | 3050 | 2750 | 2300 | 1750 | 1600 | 1650 | 2000 | 1900 | 1700 | 1450 |
 | — | 7:09 | — | — | 7:11 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — |
 | — | — | 4:31 | — | — | 4:30 | — | — | 4:30 | — | — | 4:29 | — | — | 4:27 | — |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Tue night. Freeze-thaw conditions (max 7°C on Thu night, min 0°C on Fri afternoon). Winds decreasing (gales from the S on Tue night, moderate winds from the SSE by Thu night).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Fri night. Temperatures will be below freezing (max -1°C on Fri night, min -5°C on Sun night). Winds decreasing (strong winds from the SSW on Sun night, light winds from the SW by Mon afternoon).
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.