– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sun 08 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sun 08 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sun 08 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of new snow. Temperatures will be below freezing (max 0°C on Sun morning, min -4°C on Sun night). Wind will be generally light. | Days 4–6 Weather SummaryA light covering of new snow mostly falling on Thu night. Freeze-thaw conditions (max 1°C on Wed afternoon, min -5°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the S by Thu afternoon). | |||||||||||||||||
Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | |  | | | | | |  |  | | | |
clear | cloudy | snow shwrs | light snow | cloudy | some clouds | clear | clear | clear | clear | clear | some clouds | cloudy | cloudy | mod. snow | snow shwrs | clear | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 7 | 1 | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 0 | -1 | -3 | -3 | -3 | -1 | 0 | 0 | 0 | 0 | 1 | 1 | -2 | -3 | -3 | -5 | -4 | -3 |
min °C | -1 | -2 | -4 | -3 | -3 | -3 | 0 | 0 | 0 | 0 | 0 | -1 | -2 | -3 | -5 | -5 | -5 | -4 |
-1 | -4 | -11 | -7 | -9 | -8 | -2 | 0 | 0 | 0 | -2 | -5 | -7 | -9 | -11 | -9 | -5 | -8 | |
1450 | 1300 | 950 | 1000 | 1050 | 900 | 1450 | 1500 | 1500 | 1550 | 1550 | 1600 | 1200 | 1150 | 850 | 800 | 900 | 250 | |
Cloud base (m) | 1650 | 650 | 650 | 600 | 600 | 3900 | 1700 | 8800 | 2350 | 600 | 600 | 650 | 700 | |||||
 | 7:26 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:18 | — | — |
 | — | 5:16 | — | — | 5:19 | — | — | 5:21 | — | — | 5:22 | — | — | 5:23 | — | — | 5:25 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Temperatures will be below freezing (max 0°C on Sun morning, min -4°C on Sun night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Thu night. Freeze-thaw conditions (max 1°C on Wed afternoon, min -5°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the S by Thu afternoon).
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.