– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Mon 01 Jun Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Mon 01 Jun Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Mon 01 Jun Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 5mm), mostly falling on Wed afternoon. Very mild (max 10°C on Tue afternoon, min 1°C on Wed night). Wind will be generally light. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 2°C on Thu afternoon, min -5°C on Fri night). Winds decreasing (fresh winds from the SSW on Fri afternoon, light winds from the SSW by Sat morning). | |||||||||||||||||
Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | Friday 5 | Saturday 6 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  |  |  | | | | |  |  |  | |  | |
some clouds | cloudy | some clouds | clear | clear | some clouds | light rain | rain shwrs | rain shwrs | some clouds | rain shwrs | some clouds | some clouds | light snow | heavy snow | snow shwrs | snow shwrs | snow shwrs | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 17 | 2 | 4 | 2 | |
— | — | — | — | — | — | 1.8 | 3 | 0.4 | — | 0.1 | — | — | — | — | — | — | — | |
max °C | 5 | 7 | 9 | 8 | 10 | 10 | 4 | 3 | 2 | 1 | 2 | 2 | -1 | -2 | -4 | -5 | -3 | -3 |
min °C | 5 | 6 | 8 | 8 | 9 | 7 | 3 | 3 | 1 | 1 | 2 | 0 | -2 | -2 | -5 | -5 | -4 | -4 |
2 | 4 | 7 | 8 | 8 | 4 | -2 | -1 | -2 | -2 | -2 | -5 | -7 | -8 | -11 | -10 | -8 | -8 | |
2850 | 3000 | 3050 | 3000 | 3300 | 3200 | 2550 | 2550 | 2350 | 2400 | 2550 | 2350 | 1950 | 1750 | 1400 | 1400 | 1700 | 1500 | |
Cloud base (m) | 6800 | 2150 | 2200 | 2200 | 700 | 900 | 1900 | 1900 | 800 | 550 | 600 | 850 | 850 | |||||
 | 5:09 | — | — | 5:09 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:05 | — | — |
 | — | — | 9:01 | — | — | 9:02 | — | — | 9:04 | — | — | 9:04 | — | — | 9:05 | — | — | 9:06 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 5mm), mostly falling on Wed afternoon. Very mild (max 10°C on Tue afternoon, min 1°C on Wed night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 2°C on Thu afternoon, min -5°C on Fri night). Winds decreasing (fresh winds from the SSW on Fri afternoon, light winds from the SSW by Sat morning).
This table gives the weather forecast for South Twin Sister at the specific elevation of 2134 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.