– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Tue 02 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Tue 02 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Tue 02 Dec 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 Fri morning. Freeze-thaw conditions (max 2°C on Thu night, min -3°C on Tue afternoon). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Sat morning. Freeze-thaw conditions (max 2°C on Fri afternoon, min -1°C on Fri night). Winds increasing (light winds from the SSW on Sat afternoon, fresh winds from the WSW by Sun afternoon). | ||||||||||||||||
Tue 2 | Wednesday 3 | Thursday 4 | Friday 5 | Saturday 6 | Sunday 7 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | |  | | |  |  | | | |  |  | |
some clouds | cloudy | cloudy | cloudy | cloudy | light snow | light snow | snow shwrs | light snow | cloudy | light snow | mod. snow | light snow | light snow | light snow | snow shwrs | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | 3 | 2 | 1 | 4 | — | 4 | 6 | 3 | 2 | 5 | 2 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -2 | -2 | -2 | -2 | -1 | 0 | 0 | 2 | 1 | 2 | 0 | -1 | 0 | 0 | 2 | 1 | 0 |
min°C | -3 | -3 | -2 | -2 | -2 | -1 | 0 | 0 | 0 | 1 | -1 | -1 | -1 | 0 | 0 | 0 | -1 |
-3 | -3 | -4 | -4 | -4 | -4 | -3 | -2 | -4 | -4 | -8 | -5 | -4 | -4 | -6 | -7 | -7 | |
1150 | 1000 | 1100 | 1100 | 1250 | 1400 | 1550 | 1600 | 1600 | 1750 | 1350 | 1350 | 1350 | 1450 | 1400 | 1600 | 1350 | |
Cloud base (m) | 600 | 650 | 600 | 600 | 600 | 600 | 600 | 600 | 700 | 550 | 550 | 600 | 550 | 600 | 550 | 600 | 750 |
 | — | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — | 7:45 | — | — | 7:46 | — | — |
 | 4:13 | — | — | 4:13 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — |
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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 Fri morning. Freeze-thaw conditions (max 2°C on Thu night, min -3°C on Tue afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sat morning. Freeze-thaw conditions (max 2°C on Fri afternoon, min -1°C on Fri night). Winds increasing (light winds from the SSW on Sat afternoon, fresh winds from the WSW by Sun afternoon).
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.