– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Sun 29 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Sun 29 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sun 29 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA moderate fall of snow, heaviest on Sun afternoon. Temperatures will be below freezing (max -1°C on Tue afternoon, min -8°C on Sun night). Wind will be generally light. | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 1°C on Fri night, min -5°C on Thu morning). Wind will be generally light. | |||||||||||||||||
Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 1 | Thursday 2 | Friday 3 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | |  | | | | | |  | |
light snow | mod. snow | snow shwrs | some clouds | cloudy | some clouds | cloudy | cloudy | cloudy | cloudy | light snow | mod. snow | cloudy | cloudy | some clouds | some clouds | some clouds | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
1 | 7 | 2 | — | — | — | — | — | — | — | 5 | 8 | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -5 | -5 | -7 | -7 | -5 | -2 | -2 | -1 | -1 | -2 | -1 | -2 | -4 | -3 | -3 | -3 | 0 | 1 |
min °C | -5 | -5 | -8 | -8 | -6 | -5 | -2 | -1 | -2 | -3 | -2 | -4 | -5 | -3 | -3 | -3 | -1 | 0 |
-8 | -10 | -15 | -12 | -6 | -5 | -4 | -5 | -6 | -8 | -8 | -9 | -9 | -6 | -6 | -6 | -1 | 0 | |
800 | 700 | 0 | 600 | 900 | 800 | 1150 | 1350 | 1400 | 1100 | 1250 | 850 | 900 | 1100 | 900 | 1150 | 1500 | 1700 | |
Cloud base (m) | 650 | 550 | 700 | 600 | 800 | 1700 | 2400 | 2450 | 500 | 500 | 550 | 600 | 650 | 750 | 800 | 1000 | 2100 | |
 | 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 moderate fall of snow, heaviest on Sun afternoon. Temperatures will be below freezing (max -1°C on Tue afternoon, min -8°C on Sun night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 1°C on Fri night, min -5°C on Thu morning). 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.