– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Sun 04 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Sun 04 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Sun 04 Jan 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 Tue morning. Temperatures will be well below freezing (max -7°C on Tue morning, min -12°C on Wed afternoon). Winds increasing (light winds from the WSW on Sun night, near gales from the WSW by Tue afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max 0°C on Sat morning, min -12°C on Wed night). Winds decreasing (near gales from the WSW on Thu morning, light winds from the WNW by Fri night). | ||||||||||||||||||
Monday 5 | Tuesday 6 | Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | | | | | | | | | |  |  |  |  | |
heavy snow | snow shwrs | light snow | light snow | heavy snow | heavy snow | heavy snow | heavy snow | heavy snow | heavy snow | heavy snow | light snow | heavy snow | light snow | light snow | some clouds | some clouds | cloudy | snow shwrs | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
16 | 1 | 1 | 4 | 23 | 18 | 23 | 15 | 13 | 37 | 14 | 3 | 14 | 5 | 5 | — | — | — | 2 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -8 | -8 | -9 | -8 | -7 | -8 | -10 | -10 | -11 | -11 | -11 | -12 | -8 | -5 | -3 | -1 | 0 | -1 | -4 |
min °C | -8 | -9 | -9 | -10 | -8 | -9 | -11 | -11 | -12 | -12 | -12 | -12 | -10 | -6 | -4 | -3 | 0 | -2 | -5 |
-16 | -17 | -17 | -19 | -18 | -21 | -23 | -21 | -24 | -23 | -23 | -22 | -20 | -14 | -12 | -8 | -6 | -9 | -12 | |
950 | 850 | 800 | 700 | 800 | 850 | 600 | 600 | 550 | 500 | 450 | 400 | 550 | 800 | 1300 | 1600 | 2050 | 1950 | 1050 | |
Cloud base (m) | 550 | 600 | 600 | 600 | 550 | 550 | 550 | 550 | 550 | 550 | 550 | 600 | 600 | 600 | 600 | 700 | 700 | 600 | 1050 |
 | — | 8:00 | — | — | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — |
 | — | — | 4:27 | — | — | 4:28 | — | — | 4:29 | — | — | 4:30 | — | — | 4:30 | — | — | 4:32 | — |
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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 Tue morning. Temperatures will be well below freezing (max -7°C on Tue morning, min -12°C on Wed afternoon). Winds increasing (light winds from the WSW on Sun night, near gales from the WSW by Tue afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max 0°C on Sat morning, min -12°C on Wed night). Winds decreasing (near gales from the WSW on Thu morning, light winds from the WNW by Fri night).
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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SHIP3014 |
* 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.