– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Mon 30 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Mon 30 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Mon 30 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Tue night. Temperatures will be below freezing (max 0°C on Tue afternoon, min -5°C on Mon afternoon). Wind will be generally light. | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 5°C on Sun morning, min -3°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||
Mon 30 | Tuesday 31 | Wednesday 1 | Thursday 2 | Friday 3 | Saturday 4 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  | | | | |  | | | |  | | |
some clouds | some clouds | some clouds | some clouds | light snow | light snow | mod. snow | light snow | light snow | light snow | some clouds | cloudy | some clouds | some clouds | some clouds | clear | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | 4 | 2 | 8 | 3 | 2 | 1 | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -3 | -2 | -2 | 0 | 0 | -2 | -1 | -3 | -4 | -3 | -3 | -3 | -1 | 0 | 0 | 2 | 4 |
min °C | -5 | -3 | -2 | 0 | -3 | -3 | -1 | -4 | -5 | -3 | -3 | -3 | -2 | -1 | 0 | 2 | 2 |
-5 | -6 | -5 | -3 | -8 | -9 | -6 | -7 | -9 | -6 | -7 | -6 | -4 | -1 | -2 | 2 | 2 | |
1100 | 1000 | 1250 | 1500 | 1200 | 1100 | 1300 | 800 | 950 | 1050 | 1000 | 1100 | 1350 | 1500 | 1500 | 1950 | 2250 | |
Cloud base (m) | 1950 | 4650 | 3650 | 2400 | 1550 | 500 | 500 | 550 | 700 | 600 | 600 | 700 | 750 | 1600 | 850 | 1000 | 6650 |
 | — | — | 6:48 | — | — | 6:46 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — |
 | 7:35 | — | — | 7:36 | — | — | 7:37 | — | — | 7:38 | — | — | 7:40 | — | — | 7:42 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Tue night. Temperatures will be below freezing (max 0°C on Tue afternoon, min -5°C on Mon afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 5°C on Sun morning, min -3°C on Thu afternoon). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.