– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Thu 29 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Thu 29 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Thu 29 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 Sun morning. Freeze-thaw conditions (max 2°C on Fri night, min -3°C on Fri morning). Winds decreasing (near gales from the S on Fri morning, light winds from the S by Fri night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 5°C on Tue night, min -5°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||
Thu 29 | Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | Tuesday 3 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | |  |  | |  |  |  | | |  |  | | |
light snow | mod. snow | mod. snow | light snow | some clouds | light snow | cloudy | cloudy | mod. snow | heavy snow | heavy snow | snow shwrs | cloudy | cloudy | some clouds | rain shwrs | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
1 | 10 | 6 | 2 | — | 3 | — | — | 7 | 14 | 11 | 2 | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | — | |
max °C | -1 | -1 | -2 | -1 | 2 | 1 | 1 | 2 | -3 | -4 | -4 | -5 | -3 | 0 | 3 | 4 | 5 |
min °C | -1 | -1 | -3 | -1 | 0 | 0 | 0 | -1 | -3 | -5 | -5 | -5 | -4 | -2 | 1 | 4 | 4 |
-7 | -8 | -13 | -9 | -5 | -6 | -7 | -9 | -13 | -12 | -13 | -10 | -8 | -7 | -1 | 1 | 0 | |
1900 | 1700 | 1650 | 1850 | 2100 | 2300 | 2150 | 2350 | 1500 | 1450 | 1450 | 1350 | 1450 | 1550 | 2400 | 3000 | 2850 | |
Cloud base (m) | 600 | 600 | 1950 | 600 | 900 | 1700 | 650 | 2950 | 2350 | 600 | 600 | 650 | 650 | 2050 | 700 | 1650 | 5250 |
 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:33 | — | — |
 | 5:00 | — | — | 5:02 | — | — | 5:04 | — | — | 5:06 | — | — | 5:07 | — | — | 5:08 | — |
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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 Sun morning. Freeze-thaw conditions (max 2°C on Fri night, min -3°C on Fri morning). Winds decreasing (near gales from the S on Fri morning, light winds from the S by Fri night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 5°C on Tue night, min -5°C on Sun afternoon). Wind will be generally light.
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.