– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Wed 04 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Wed 04 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 9 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 light covering of new snow mostly falling on Sat afternoon. Becoming milder with light rain (total 6mm) on Sat afternoon. Very mild (max 16°C on Thu afternoon, min 1°C on Sat morning). Winds increasing (calm on Wed night, strong winds from the S by Sat morning). | Days 5–7 Weather SummaryModerate rain (total 15mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Mon 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 afternoon). | ||||||||||||||||||
Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | |  |  | |  |  | | | | |  | | | | |
clear | clear | some clouds | clear | some clouds | some clouds | some clouds | light snow | light snow | light snow | cloudy | cloudy | light snow | light snow | light snow | mod. snow | light snow | some clouds | clear | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | 1 | 5 | 2 | — | — | 2 | 2 | 5 | 8 | 5 | — | — | |
— | — | — | — | — | — | — | — | 6 | 15 | — | — | — | — | — | — | — | — | — | |
max °C | 13 | 15 | 16 | 11 | 7 | 7 | 6 | 4 | 2 | 3 | 0 | -1 | -1 | -3 | -2 | -3 | -4 | -4 | -3 |
min °C | 11 | 15 | 13 | 8 | 7 | 7 | 4 | 1 | 1 | 0 | 0 | -1 | -3 | -3 | -3 | -4 | -4 | -4 | -4 |
10 | 15 | 12 | 5 | 5 | 4 | -2 | -6 | -6 | -5 | -4 | -1 | -7 | -7 | -7 | -10 | -8 | -4 | -4 | |
3550 | 3700 | 3750 | 3250 | 2800 | 2700 | 2300 | 2100 | 1800 | 1950 | 1450 | 1400 | 1100 | 1050 | 1100 | 950 | 850 | 900 | 300 | |
Cloud base (m) | 8300 | 8750 | 8750 | 6150 | 3350 | 2850 | 750 | 600 | 600 | 850 | 700 | 600 | 600 | 600 | 600 | 600 | 600 | ||
 | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — | 7:22 | — | — |
 | — | — | 5:12 | — | — | 5:14 | — | — | 5:15 | — | — | 5:16 | — | — | 5:19 | — | — | 5:21 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A light covering of new snow mostly falling on Sat afternoon. Becoming milder with light rain (total 6mm) on Sat afternoon. Very mild (max 16°C on Thu afternoon, 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):
Moderate rain (total 15mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Mon 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 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.