– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Fri 21 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Fri 21 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Fri 21 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Sun morning. Temperatures will be below freezing (max -1°C on Fri afternoon, min -10°C on Sun night). Mainly fresh winds. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max 0°C on Wed afternoon, min -9°C on Mon afternoon). Winds increasing (light winds from the WSW on Tue night, near gales from the SSW by Wed night). | ||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | | |  |  | | |  |  | |  | |
light snow | cloudy | cloudy | light snow | mod. snow | heavy snow | snow shwrs | mod. snow | snow shwrs | clear | some clouds | cloudy | cloudy | snow shwrs | mod. snow | light snow | heavy snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
1 | — | — | 3 | 10 | 19 | 6 | 9 | 3 | — | — | — | — | 1 | 7 | 4 | 23 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -1 | -1 | -1 | -1 | -1 | -3 | -7 | -9 | -9 | -9 | -8 | -6 | -5 | -3 | -1 | 0 | -1 |
min°C | -1 | -1 | -1 | -1 | -2 | -5 | -9 | -10 | -9 | -9 | -9 | -6 | -5 | -4 | -2 | -1 | -5 |
-8 | -7 | -7 | -7 | -9 | -12 | -18 | -19 | -18 | -17 | -15 | -9 | -12 | -7 | -9 | -10 | -14 | |
1800 | 2000 | 2000 | 1900 | 1900 | 1550 | 900 | 800 | 750 | 750 | 0 | 900 | 1200 | 1150 | 1600 | 2100 | 1600 | |
Cloud base (m) | 650 | 600 | 600 | 550 | 550 | 550 | 600 | 700 | 600 | 650 | 700 | 800 | 2350 | 1850 | 700 | 550 | 600 |
 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — |
 | 4:21 | — | — | 4:20 | — | — | 4:19 | — | — | 4:17 | — | — | 4:17 | — | — | 4:16 | — |
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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 morning. Temperatures will be below freezing (max -1°C on Fri afternoon, min -10°C on Sun night). Mainly fresh winds.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max 0°C on Wed afternoon, min -9°C on Mon afternoon). Winds increasing (light winds from the WSW on Tue night, near gales from the SSW 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.