– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Mon 09 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Mon 09 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Mon 09 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA light covering of new snow mostly falling on Mon afternoon. Temperatures will be below freezing (max -2°C on Wed afternoon, min -7°C on Mon afternoon). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Fri night. Temperatures will be below freezing (max -5°C on Thu afternoon, min -11°C on Sat morning). Wind will be generally light. | ||||||||||||||||
Mon 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | |  |  | |  |  |  | |  |  | |  | |
light snow | snow shwrs | clear | clear | clear | clear | some clouds | cloudy | some clouds | cloudy | light snow | mod. snow | cloudy | heavy snow | snow shwrs | cloudy | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
3 | 2 | — | — | — | — | — | — | — | — | 4 | 6 | — | 14 | 1 | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -7 | -6 | -6 | -5 | -4 | -3 | -2 | -2 | -4 | -5 | -6 | -7 | -8 | -9 | -11 | -10 | -10 |
min °C | -7 | -7 | -6 | -5 | -5 | -3 | -2 | -4 | -4 | -5 | -6 | -8 | -9 | -10 | -11 | -10 | -10 |
-14 | -14 | -9 | -5 | -5 | -6 | -4 | -10 | -10 | -12 | -12 | -15 | -16 | -16 | -15 | -10 | -14 | |
1100 | 1000 | 1250 | 1400 | 1400 | 1450 | 1600 | 1600 | 1400 | 1250 | 1100 | 1000 | 1000 | 550 | 550 | 600 | 0 | |
Cloud base (m) | 600 | 600 | 1650 | 1500 | 600 | 8250 | 2550 | 2000 | 750 | 600 | 850 | 650 | 550 | 550 | 550 | ||
 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — |
 | 5:19 | — | — | 5:21 | — | — | 5:22 | — | — | 5:23 | — | — | 5:25 | — | — | 5:27 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A light covering of new snow mostly falling on Mon afternoon. Temperatures will be below freezing (max -2°C on Wed afternoon, min -7°C on Mon afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri night. Temperatures will be below freezing (max -5°C on Thu afternoon, min -11°C on Sat morning). 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.