– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Thu 05 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Thu 05 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Thu 05 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 11mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Sat night. Freeze-thaw conditions (max 3°C on Fri night, min -4°C on Thu morning). Winds increasing (light winds from the SW on Fri morning, fresh winds from the SSW by Sat night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 1°C on Sun morning, min -9°C on Mon night). Mainly strong winds. | |||||||||||||||||
Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | |  |  |  | | |  | |  |  |  | | | |
light snow | cloudy | light snow | cloudy | light snow | light snow | light rain | mod. rain | heavy snow | light snow | light snow | snow shwrs | light snow | mod. snow | mod. snow | snow shwrs | snow shwrs | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
3 | — | 1 | — | 2 | 2 | — | — | 17 | 2 | 1 | 6 | 5 | 6 | 8 | 4 | 1 | 19 | |
— | — | — | — | — | 0.1 | 0.6 | 6 | 5 | — | — | — | — | — | — | — | — | — | |
max °C | -4 | -3 | -1 | 0 | 1 | 3 | 3 | 3 | 3 | 1 | -1 | -4 | -6 | -7 | -8 | -8 | -7 | -6 |
min °C | -4 | -3 | -3 | -1 | 0 | 1 | 3 | 3 | 1 | 0 | -3 | -7 | -7 | -8 | -9 | -9 | -8 | -8 |
-9 | -7 | -7 | -4 | -3 | -3 | -2 | -2 | -5 | -7 | -10 | -15 | -15 | -17 | -18 | -16 | -13 | -18 | |
1000 | 1050 | 1000 | 1350 | 1600 | 2250 | 2400 | 2200 | 2000 | 1700 | 1300 | 700 | 600 | 550 | 300 | 400 | 550 | 200 | |
Cloud base (m) | 600 | 650 | 750 | 600 | 600 | 600 | 600 | 600 | 600 | 550 | 550 | 700 | 550 | 550 | 600 | 600 | 600 | 550 |
 | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 7:35 | — | — | 6:33 | — | — | 6:31 | — | — |
 | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 7:01 | — | — | 6:04 | — | — | 6:05 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 11mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Sat night. Freeze-thaw conditions (max 3°C on Fri night, min -4°C on Thu morning). Winds increasing (light winds from the SW on Fri morning, fresh winds from the SSW by Sat night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 1°C on Sun morning, min -9°C on Mon night). Mainly strong winds.
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.