– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Mon 23 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Mon 23 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Mon 23 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Tue night. Temperatures will be below freezing (max -3°C on Tue morning, min -5°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Thu night. Temperatures will be below freezing (max -1°C on Sat morning, min -4°C on Fri morning). Wind will be generally light. | ||||||||||||||||
Mon 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  |  |  | | | |  | | | | |
snow shwrs | clear | clear | clear | snow shwrs | light snow | light snow | light snow | some clouds | cloudy | light snow | light snow | cloudy | some clouds | cloudy | cloudy | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
1 | — | — | — | 3 | 3 | 2 | 3 | — | — | 4 | 2 | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -4 | -4 | -3 | -3 | -4 | -4 | -4 | -4 | -3 | -3 | -2 | -3 | -4 | -2 | -1 | -1 | -1 |
min °C | -4 | -4 | -3 | -4 | -5 | -4 | -4 | -4 | -4 | -3 | -3 | -4 | -4 | -4 | -1 | -2 | -2 |
-9 | -7 | -3 | -8 | -9 | -10 | -10 | -10 | -10 | -9 | -9 | -9 | -9 | -8 | -1 | -2 | -5 | |
900 | 400 | 1000 | 1050 | 500 | 800 | 950 | 900 | 1000 | 1000 | 1050 | 1000 | 950 | 550 | 1200 | 1250 | 1100 | |
Cloud base (m) | 650 | 650 | 600 | 800 | 600 | 600 | 600 | 600 | 650 | 700 | 600 | 650 | 600 | 600 | 600 | 750 | 650 |
 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — |
 | 5:42 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:50 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Tue night. Temperatures will be below freezing (max -3°C on Tue morning, min -5°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Thu night. Temperatures will be below freezing (max -1°C on Sat morning, min -4°C on Fri morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.