– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Wed 10 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Wed 10 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Wed 10 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Wed afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -4°C on Wed night). Winds decreasing (gales from the WSW on Wed afternoon, moderate winds from the W by Thu afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 3°C on Sat afternoon, min -7°C on Mon night). Mainly severe gales. | ||||||||||||||||
Wed 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  |  | | | | |  |  | | | |
mod. snow | heavy snow | cloudy | cloudy | cloudy | some clouds | cloudy | some clouds | clear | cloudy | cloudy | cloudy | cloudy | mod. snow | light snow | mod. snow | heavy snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
10 | 14 | — | — | — | — | — | — | — | — | — | — | — | 8 | 3 | 9 | 16 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 2 | 0 | -3 | -3 | 0 | 0 | 1 | 2 | 3 | 3 | 2 | 0 | 0 | 1 | 1 | 0 | -6 |
min°C | 1 | -4 | -4 | -3 | -1 | 0 | 0 | 2 | 3 | 3 | -1 | -1 | 0 | 0 | 1 | -3 | -7 |
-8 | -13 | -12 | -10 | -8 | -7 | -7 | -4 | -2 | -3 | -8 | -7 | -7 | -9 | -8 | -11 | -16 | |
2500 | 1550 | 1250 | 1500 | 2200 | 2150 | 2150 | 2650 | 2850 | 2700 | 2250 | 2000 | 2150 | 2500 | 2450 | 2200 | 950 | |
Cloud base (m) | 550 | 600 | 900 | 2300 | 600 | 600 | 650 | 850 | 750 | 2850 | 700 | 800 | 550 | 600 | 550 | 600 | |
 | — | — | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — | 7:54 | — | — |
 | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:12 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Wed afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -4°C on Wed night). Winds decreasing (gales from the WSW on Wed afternoon, moderate winds from the W by Thu afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 3°C on Sat afternoon, min -7°C on Mon night). Mainly severe gales.
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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
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SHIP4571 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.