– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Wed 28 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Wed 28 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Wed 28 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 6mm) on Thu night. Becoming colder with heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 4°C on Fri night, min -1°C on Wed morning). Winds decreasing (fresh winds from the S on Wed night, light winds from the S by Fri night). | Days 4–6 Weather SummaryDrizzle, on Sat morning followed by colder weather and a moderate fall of snow, heaviest on Sun afternoon.. Freeze-thaw conditions (max 8°C on Sat afternoon, min -2°C on Sun night). Winds decreasing (fresh winds from the S on Sun morning, calm by Mon afternoon). | |||||||||||||||||
Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  |  | | |  |  | |  | |  |  |  | |  | |
light snow | light snow | mod. snow | light snow | cloudy | light snow | light snow | light snow | some clouds | light rain | light rain | cloudy | light snow | mod. snow | snow shwrs | some clouds | cloudy | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
1 | 2 | 7 | 3 | — | 2 | 2 | 5 | — | — | — | — | 3 | 7 | 5 | — | — | — | |
— | — | — | — | — | 6 | — | — | — | 0.5 | 0.5 | — | — | — | — | — | — | — | |
max °C | -1 | 0 | 1 | 1 | 2 | 3 | 1 | 1 | 4 | 6 | 8 | 8 | 3 | 0 | 0 | -2 | -1 | 0 |
min °C | -1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 2 | 5 | 6 | 5 | 0 | 0 | -2 | -2 | -2 | -1 |
-8 | -6 | -6 | -6 | -5 | -5 | -5 | -5 | -1 | 1 | 3 | 0 | -7 | -4 | -5 | -2 | -2 | -1 | |
1300 | 1450 | 1700 | 1500 | 1800 | 1850 | 1750 | 1600 | 2200 | 2550 | 2450 | 2450 | 1950 | 1550 | 1350 | 1200 | 1300 | 1350 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 600 | 600 | 1600 | 600 | 900 | 6350 | 950 | 4500 | 2550 | 650 | 600 | 850 | 850 | 1650 |
 | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — |
 | — | 4:59 | — | — | 5:00 | — | — | 5:02 | — | — | 5:04 | — | — | 5:06 | — | — | 5:07 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 6mm) on Thu night. Becoming colder with heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 4°C on Fri night, min -1°C on Wed morning). Winds decreasing (fresh winds from the S on Wed night, light winds from the S by Fri night).
South Twin Sister Weather (Days 3-6):
Drizzle, on Sat morning followed by colder weather and a moderate fall of snow, heaviest on Sun afternoon.. Freeze-thaw conditions (max 8°C on Sat afternoon, min -2°C on Sun night). Winds decreasing (fresh winds from the S on Sun morning, calm by Mon 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.