– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Tue 10 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Tue 10 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Tue 10 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 2°C on Wed afternoon, min -5°C on Fri afternoon). Wind will be generally light. | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Fri night. Freeze-thaw conditions (max 2°C on Mon morning, min -5°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  |  |  | |  | | | | |  |  | | | |
clear | some clouds | clear | cloudy | some clouds | some clouds | light snow | light snow | heavy snow | light snow | cloudy | cloudy | light snow | light snow | some clouds | some clouds | light rain | cloudy | cloudy | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | 2 | 5 | 11 | 5 | — | — | 1 | 2 | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.3 | — | — | |
max °C | 1 | 1 | 2 | 2 | 0 | -1 | -2 | -3 | -4 | -4 | -4 | -3 | -3 | -5 | -4 | 1 | 2 | -1 | 3 |
min °C | 0 | 1 | 2 | 1 | 0 | -1 | -2 | -4 | -5 | -5 | -5 | -4 | -4 | -5 | -4 | -3 | 0 | -1 | 1 |
0 | 1 | 2 | -2 | -3 | -4 | -7 | -7 | -5 | -5 | -5 | -4 | -4 | -8 | -4 | -6 | -4 | -3 | -2 | |
1550 | 1650 | 1900 | 1800 | 1500 | 1400 | 1100 | 1050 | 800 | 750 | 750 | 900 | 600 | 800 | 800 | 800 | 1800 | 1250 | 1850 | |
Cloud base (m) | 6900 | 6150 | 3000 | 2300 | 850 | 600 | 600 | 600 | 600 | 600 | 1550 | 550 | 550 | 650 | 2200 | 1500 | 500 | ||
 | — | 7:22 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — |
 | — | — | 5:22 | — | — | 5:23 | — | — | 5:25 | — | — | 5:27 | — | — | 5:29 | — | — | 5:30 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 2°C on Wed afternoon, min -5°C on Fri afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Fri night. Freeze-thaw conditions (max 2°C on Mon morning, min -5°C on Fri night). 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.