– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sun 16 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sun 16 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sun 16 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMild at first with light rain (total 4mm) on Sun morning followed by colder weather and light fall of snow, heaviest on Mon night. Freeze-thaw conditions (max 3°C on Sun morning, min -6°C on Tue morning). Winds decreasing (fresh winds from the SSW on Sun morning, light winds from the SSW by Mon afternoon). | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 2°C on Wed afternoon, min -7°C on Fri night). Winds increasing (light winds from the WNW on Wed morning, strong winds from the SSW by Thu morning). | |||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | |  |  | | | | |  |  |  |  | |
light rain | light snow | cloudy | cloudy | cloudy | mod. snow | light snow | cloudy | some clouds | some clouds | some clouds | cloudy | some clouds | cloudy | light snow | mod. snow | snow shwrs | snow shwrs | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 3 | — | — | — | 6 | 1 | — | — | — | — | — | — | — | 3 | 6 | 8 | 1 | |
4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 3 | 2 | 1 | 0 | -1 | -1 | -6 | -6 | -3 | -1 | 2 | 2 | 1 | -1 | -1 | -2 | -2 | -6 |
min°C | 2 | 1 | 0 | 0 | -1 | -5 | -6 | -6 | -6 | -2 | 1 | 1 | -1 | -2 | -3 | -2 | -4 | -7 |
-4 | -5 | -5 | -4 | -4 | -10 | -10 | -10 | -13 | -6 | -2 | -5 | -9 | -8 | -11 | -10 | -13 | -16 | |
2650 | 2450 | 2250 | 2150 | 2050 | 1500 | 1050 | 1100 | 1100 | 1350 | 2300 | 2350 | 2250 | 1850 | 1850 | 1450 | 1600 | 1150 | |
Cloud base (m) | 2000 | 550 | 650 | 550 | 550 | 550 | 600 | 600 | 600 | 600 | 4900 | 3000 | 3200 | 1750 | 600 | 550 | 550 | 650 |
 | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — |
 | — | 4:25 | — | — | 4:24 | — | — | 4:23 | — | — | 4:22 | — | — | 4:22 | — | — | 4:21 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mild at first with light rain (total 4mm) on Sun morning followed by colder weather and light fall of snow, heaviest on Mon night. Freeze-thaw conditions (max 3°C on Sun morning, min -6°C on Tue morning). Winds decreasing (fresh winds from the SSW on Sun morning, light winds from the SSW by Mon afternoon).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 2°C on Wed afternoon, min -7°C on Fri night). Winds increasing (light winds from the WNW on Wed morning, strong winds from the SSW by Thu 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.