– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Wed 07 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Wed 07 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Wed 07 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA heavy fall of snow, heaviest during Wed afternoon. Temperatures will be below freezing (max 0°C on Fri night, min -12°C on Wed night). Winds decreasing (strong winds from the S on Wed morning, light winds from the W by Fri afternoon). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 3°C on Mon night, min -4°C on Sat night). Mainly near gales. | |||||||||||||||||
Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  |  | | |  |  | | | |  |  | |
mod. snow | heavy snow | heavy snow | mod. snow | light snow | mod. snow | cloudy | some clouds | cloudy | cloudy | cloudy | snow shwrs | snow shwrs | light snow | heavy snow | some clouds | rain shwrs | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
6 | 15 | 14 | 6 | 4 | 8 | — | — | — | — | — | 4 | 1 | 5 | 14 | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | — | |
max °C | -10 | -10 | -10 | -10 | -9 | -6 | -5 | -2 | 0 | 1 | 1 | -3 | -1 | -1 | -1 | 2 | 2 | 3 |
min °C | -10 | -11 | -12 | -11 | -10 | -8 | -6 | -4 | -1 | 0 | 0 | -4 | -1 | -1 | -2 | 1 | 2 | 1 |
-18 | -22 | -23 | -22 | -20 | -17 | -14 | -10 | -7 | -6 | -9 | -12 | -7 | -8 | -9 | -6 | -4 | -5 | |
650 | 600 | 600 | 500 | 600 | 800 | 1000 | 1150 | 2050 | 2200 | 2300 | 1200 | 1850 | 1900 | 1800 | 2250 | 2550 | 2550 | |
Cloud base (m) | 550 | 550 | 550 | 600 | 600 | 700 | 650 | 650 | 650 | 2650 | 4350 | 650 | 750 | 700 | 600 | 650 | 650 | 2200 |
 | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — | 7:56 | — | — | 7:56 | — | — |
 | — | 4:29 | — | — | 4:30 | — | — | 4:30 | — | — | 4:32 | — | — | 4:34 | — | — | 4:35 | — |
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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. Temperatures will be below freezing (max 0°C on Fri night, min -12°C on Wed night). Winds decreasing (strong winds from the S on Wed morning, light winds from the W by Fri afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 3°C on Mon night, min -4°C on Sat night). Mainly near 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.