– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Fri 05 Jun Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Fri 05 Jun Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 05 Jun Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 2mm) on Fri afternoon. Becoming colder with heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 4°C on Sun night, min -1°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryMild with light rain (total 4mm) on Mon night Becoming colder with a light covering of snow, mostly falling on Tue morning. Freeze-thaw conditions (max 5°C on Mon afternoon, min 0°C on Tue morning). Wind will be generally light. | ||||||||||||||||
Fri 5 | Saturday 6 | Sunday 7 | Monday 8 | Tuesday 9 | Wednesday 10 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  |  | |  |  |  | |  |  | |  | |
light snow | heavy snow | light snow | light snow | snow shwrs | some clouds | snow shwrs | light snow | light snow | rain shwrs | rain shwrs | mod. snow | light snow | light rain | cloudy | cloudy | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
2 | 11 | 3 | 2 | 1 | — | 1 | 3 | 2 | — | — | 6 | 1 | — | — | — | — | |
1.5 | — | — | — | — | — | 0.5 | 0.2 | — | 0.7 | 3 | — | — | 0.1 | — | — | — | |
max °C | 2 | 1 | -1 | 0 | 1 | 0 | 3 | 4 | 1 | 5 | 4 | 1 | 2 | 2 | 1 | 2 | 3 |
min °C | 2 | -1 | -1 | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 3 | 0 | 1 | 1 | 1 | 1 | 3 |
-2 | -5 | -4 | -2 | -3 | -3 | -1 | -2 | -3 | 1 | 2 | -3 | -1 | -4 | -2 | -1 | 3 | |
1750 | 1400 | 1350 | 1550 | 1450 | 1550 | 2050 | 1700 | 1750 | 2150 | 2000 | 1550 | 1800 | 1650 | 1700 | 1900 | 2450 | |
Cloud base (m) | 850 | 600 | 600 | 650 | 650 | 550 | 750 | 650 | 550 | 700 | 1700 | 550 | 550 | 600 | 600 | 600 | 1850 |
 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — |
 | — | 9:05 | — | — | 9:06 | — | — | 9:07 | — | — | 9:07 | — | — | 9:07 | — | — | 9:08 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 2mm) on Fri afternoon. Becoming colder with heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 4°C on Sun night, min -1°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mild with light rain (total 4mm) on Mon night Becoming colder with a light covering of snow, mostly falling on Tue morning. Freeze-thaw conditions (max 5°C on Mon afternoon, min 0°C on Tue morning). Wind will be generally light.
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.