– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sat 28 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sat 28 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sat 28 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 Sun afternoon. Temperatures will be well below freezing (max -6°C on Sat night, min -13°C on Sun night). Winds decreasing (fresh winds from the SSW on Sun afternoon, light winds from the WSW by Mon night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -4°C on Fri afternoon, min -8°C on Wed night). Winds decreasing (strong winds from the S on Wed afternoon, light winds from the N by Fri afternoon). | ||||||||||||||||||
Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 1 | Thursday 2 | Friday 3 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  |  | | |  | |  | | | | | |  | |
light snow | light snow | heavy snow | snow shwrs | some clouds | snow shwrs | some clouds | cloudy | cloudy | light snow | mod. snow | heavy snow | heavy snow | some clouds | snow shwrs | some clouds | some clouds | some clouds | clear | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
1 | 1 | 14 | 4 | — | 1 | — | — | — | 1 | 6 | 12 | 15 | — | 2 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -6 | -9 | -8 | -11 | -12 | -9 | -7 | -7 | -7 | -6 | -5 | -5 | -7 | -8 | -7 | -6 | -5 | -4 | -3 |
min °C | -8 | -9 | -9 | -13 | -13 | -10 | -9 | -7 | -7 | -6 | -6 | -6 | -8 | -8 | -7 | -7 | -6 | -5 | -3 |
-16 | -16 | -18 | -22 | -21 | -16 | -13 | -13 | -14 | -13 | -14 | -13 | -13 | -15 | -13 | -13 | -11 | -9 | -5 | |
850 | 850 | 650 | 0 | 550 | 750 | 500 | 1200 | 1250 | 1200 | 1050 | 1100 | 750 | 850 | 1050 | 600 | 1050 | 1250 | 1050 | |
Cloud base (m) | 1500 | 600 | 550 | 600 | 600 | 600 | 650 | 2800 | 2700 | 1550 | 500 | 500 | 550 | 600 | 600 | 600 | 600 | 650 | 800 |
 | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:46 | — | — | 6:43 | — | — | 6:41 | — | — |
 | — | — | 7:32 | — | — | 7:35 | — | — | 7:36 | — | — | 7:37 | — | — | 7:38 | — | — | 7:40 | — |
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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. Temperatures will be well below freezing (max -6°C on Sat night, min -13°C on Sun night). Winds decreasing (fresh winds from the SSW on Sun afternoon, light winds from the WSW by Mon night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -4°C on Fri afternoon, min -8°C on Wed night). Winds decreasing (strong winds from the S on Wed afternoon, light winds from the N by Fri 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.