– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Wed 04 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Wed 04 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Wed 04 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of new snow. Very mild (max 15°C on Thu morning, min 1°C on Sat morning). Winds increasing (calm on Wed night, strong winds from the S by Sat morning). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Sat afternoon. Becoming milder with moderate rain (total 16mm) on Sat night. Freeze-thaw conditions (max 3°C on Sat night, min -4°C on Mon night). Winds decreasing (strong winds from the S on Sat night, calm by Sun night). | ||||||||||||||||
Wed 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  |  |  | | | | | | | |
clear | clear | some clouds | clear | clear | some clouds | clear | some clouds | light snow | mod. snow | light snow | light snow | light snow | light snow | light snow | light snow | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | 3 | 7 | 2 | 4 | 2 | 5 | 2 | 3 | 4 | |
— | — | — | — | — | — | — | — | — | — | 16 | — | — | — | — | — | — | |
max °C | 12 | 13 | 15 | 15 | 11 | 8 | 7 | 5 | 2 | 2 | 3 | -1 | -2 | -2 | -3 | -2 | -3 |
min °C | 11 | 11 | 14 | 12 | 8 | 7 | 6 | 4 | 1 | 2 | 1 | -1 | -2 | -3 | -3 | -3 | -4 |
10 | 10 | 14 | 11 | 6 | 4 | 2 | -1 | -6 | -4 | -4 | -6 | -6 | -5 | -9 | -8 | -10 | |
3400 | 3500 | 3650 | 3700 | 3200 | 2800 | 2600 | 2200 | 2000 | 2000 | 2250 | 1300 | 1250 | 1150 | 1050 | 1050 | 950 | |
Cloud base (m) | 7400 | 8300 | 9000 | 8800 | 6200 | 6300 | 1950 | 600 | 550 | 600 | 650 | 600 | 700 | 600 | 550 | ||
 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — |
 | 5:10 | — | — | 5:12 | — | — | 5:14 | — | — | 5:15 | — | — | 5:16 | — | — | 5:19 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Very mild (max 15°C on Thu morning, min 1°C on Sat morning). Winds increasing (calm on Wed night, strong winds from the S by Sat morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sat afternoon. Becoming milder with moderate rain (total 16mm) on Sat night. Freeze-thaw conditions (max 3°C on Sat night, min -4°C on Mon night). Winds decreasing (strong winds from the S on Sat night, calm by Sun 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.