– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Mon 23 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Mon 23 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Mon 23 Mar 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 Tue night. Temperatures will be below freezing (max 0°C on Tue morning, min -12°C on Wed night). Winds decreasing (gales from the SSW on Tue morning, light winds from the SW by Thu afternoon). | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Sun morning. Temperatures will be below freezing (max -2°C on Fri night, min -10°C on Sun afternoon). Winds increasing (light winds from the WSW on Thu night, fresh winds from the SSW by Sun afternoon). | ||||||||||||||||||
Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  |  | |  |  | | |  | |  | | |  | |
light snow | mod. snow | light snow | heavy snow | heavy snow | heavy snow | mod. snow | snow shwrs | snow shwrs | some clouds | some clouds | some clouds | some clouds | cloudy | cloudy | cloudy | mod. snow | mod. snow | snow shwrs | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
2 | 7 | 2 | 16 | 11 | 11 | 10 | 1 | 1 | — | — | — | — | — | — | — | 6 | 10 | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | 0 | -1 | -4 | -9 | -11 | -11 | -11 | -9 | -6 | -4 | -3 | -2 | -2 | -4 | -6 | -8 | -9 | -11 |
min °C | -4 | -2 | -2 | -9 | -10 | -11 | -12 | -12 | -10 | -9 | -5 | -3 | -2 | -3 | -4 | -8 | -8 | -10 | -12 |
-12 | -10 | -11 | -18 | -22 | -22 | -23 | -20 | -15 | -15 | -9 | -8 | -8 | -9 | -11 | -16 | -17 | -19 | -20 | |
1650 | 1950 | 1800 | 1100 | 800 | 650 | 350 | 700 | 950 | 0 | 1500 | 1600 | 1800 | 1500 | 1400 | 1100 | 900 | 700 | 0 | |
Cloud base (m) | 3100 | 550 | 550 | 600 | 600 | 650 | 650 | 750 | 1650 | 650 | 900 | 2100 | 600 | 600 | 800 | 900 | 600 | 550 | 800 |
 | — | 7:03 | — | — | 7:01 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — |
 | — | — | 7:25 | — | — | 7:27 | — | — | 7:29 | — | — | 7:30 | — | — | 7:31 | — | — | 7:32 | — |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max 0°C on Tue morning, min -12°C on Wed night). Winds decreasing (gales from the SSW on Tue morning, light winds from the SW by Thu afternoon).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Sun morning. Temperatures will be below freezing (max -2°C on Fri night, min -10°C on Sun afternoon). Winds increasing (light winds from the WSW on Thu night, fresh winds from the SSW by Sun 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.