– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Thu 04 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Thu 04 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Thu 04 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 4mm) on Fri morning. Becoming colder with heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 3°C on Fri morning, min -1°C on Fri night). Winds increasing (calm on Thu night, near gales from the WSW by Fri night). | Days 5–7 Weather SummaryHeavy rain (total 26mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Wed morning. Freeze-thaw conditions (max 4°C on Mon afternoon, min -5°C on Tue afternoon). Winds decreasing (gales from the WSW on Mon night, light winds from the SSE by Tue night). | ||||||||||||||||
Thu 4 | Friday 5 | Saturday 6 | Sunday 7 | Monday 8 | Tuesday 9 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | | |  |  | |  | | | | | |
light snow | light snow | light rain | light snow | heavy snow | mod. snow | light snow | light snow | light snow | snow shwrs | snow shwrs | light snow | heavy rain | light snow | light snow | light snow | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
2 | 1 | — | 2 | 27 | 7 | 5 | 3 | 3 | 1 | 2 | 3 | — | 4 | 5 | 5 | 5 | |
— | — | 4 | — | — | — | — | — | — | — | — | 8 | 18 | — | — | — | — | |
max°C | 0 | 1 | 3 | 1 | 0 | -1 | -1 | 0 | 1 | 1 | 1 | 2 | 4 | 0 | -3 | -5 | -3 |
min°C | 0 | 0 | 2 | 0 | -1 | -1 | -1 | -1 | 0 | 1 | 1 | 2 | 3 | -4 | -4 | -5 | -5 |
-2 | 0 | -3 | -8 | -10 | -9 | -7 | -6 | -7 | -4 | -2 | -3 | -3 | -14 | -14 | -14 | -8 | |
1500 | 1550 | 1900 | 1700 | 1450 | 1350 | 1300 | 1350 | 1550 | 1700 | 1700 | 1850 | 2200 | 1300 | 1000 | 850 | 700 | |
Cloud base (m) | 600 | 600 | 550 | 550 | 550 | 600 | 600 | 600 | 600 | 600 | 700 | 550 | 550 | 550 | 600 | 600 | 650 |
 | — | — | 7:43 | — | — | 7:45 | — | — | 7:46 | — | — | 7:47 | — | — | 7:48 | — | — |
 | 4:12 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — | — | 4:10 | — | — | 4:10 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 4mm) on Fri morning. Becoming colder with heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 3°C on Fri morning, min -1°C on Fri night). Winds increasing (calm on Thu night, near gales from the WSW by Fri night).
South Twin Sister Weather (Days 3-6):
Heavy rain (total 26mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Wed morning. Freeze-thaw conditions (max 4°C on Mon afternoon, min -5°C on Tue afternoon). Winds decreasing (gales from the WSW on Mon night, light winds from the SSE by Tue night).
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.