– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Mon 02 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Mon 02 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Mon 02 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Mon morning, min -3°C on Wed night). Winds increasing (calm on Mon morning, fresh winds from the S by Tue morning). | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 2°C on Sat morning, min -4°C on Thu morning). Wind will be generally light. | |||||||||||||||||
Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | Friday 6 | Saturday 7 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | |  | | |  |  | | | | |  | |
some clouds | clear | some clouds | light snow | light snow | heavy snow | light snow | light snow | light snow | some clouds | light snow | mod. snow | cloudy | some clouds | light snow | cloudy | cloudy | cloudy | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | 1 | 4 | 19 | 3 | 1 | 2 | — | 2 | 6 | — | — | 2 | — | — | — | |
— | — | — | 0.7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 4 | 4 | 4 | 2 | 1 | 0 | -1 | -1 | -1 | -4 | -3 | -1 | -2 | -1 | 1 | 2 | 2 | 2 |
min °C | 3 | 4 | 2 | 2 | 1 | -1 | -1 | -1 | -3 | -4 | -3 | -2 | -2 | -1 | -1 | 1 | 2 | 0 |
1 | 2 | -4 | -5 | -5 | -5 | -3 | -4 | -8 | -9 | -7 | -6 | -5 | -4 | -4 | -2 | -2 | -4 | |
2250 | 2150 | 2050 | 1800 | 1700 | 1550 | 1300 | 1400 | 1200 | 950 | 1000 | 1150 | 1200 | 1350 | 1400 | 2000 | 2150 | 1850 | |
Cloud base (m) | 5650 | 6150 | 750 | 550 | 550 | 550 | 600 | 600 | 700 | 600 | 600 | 600 | 600 | 1750 | 600 | 600 | 650 | |
 | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — |
 | — | 5:52 | — | — | 5:54 | — | — | 5:55 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — |
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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 Tue night. Freeze-thaw conditions (max 4°C on Mon morning, min -3°C on Wed night). Winds increasing (calm on Mon morning, fresh winds from the S by Tue morning).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 2°C on Sat morning, min -4°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.