– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Tue 19 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Tue 19 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Tue 19 May 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. Freeze-thaw conditions (max 6°C on Thu afternoon, min -1°C on Tue morning). Wind will be generally light. | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Sun night. Freeze-thaw conditions (max 7°C on Fri afternoon, min -4°C on Sun night). Wind will be generally light. | |||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | |  | | | | | | | |  |  | |
cloudy | snow shwrs | snow shwrs | clear | clear | some clouds | some clouds | clear | clear | clear | clear | some clouds | some clouds | clear | some clouds | cloudy | light snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 13 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -1 | 0 | 1 | 1 | 4 | 5 | 5 | 6 | 6 | 5 | 7 | 7 | 5 | 6 | 5 | 2 | -1 | -3 |
min °C | -1 | -1 | 0 | 1 | 2 | 4 | 5 | 6 | 5 | 5 | 6 | 6 | 5 | 6 | 3 | 0 | -1 | -4 |
-5 | -4 | -3 | 1 | 2 | 1 | 5 | 4 | 3 | 5 | 5 | 4 | 2 | 3 | -1 | -5 | -8 | -11 | |
1900 | 2100 | 2450 | 2500 | 2850 | 3150 | 3050 | 3050 | 3100 | 3100 | 3300 | 3450 | 3200 | 3100 | 2800 | 2150 | 1850 | 1450 | |
Cloud base (m) | 700 | 700 | 700 | 800 | 900 | 6650 | 5250 | 9050 | 2200 | 7050 | 6500 | 8150 | 1550 | 550 | 550 | |||
 | 5:22 | — | — | 5:20 | — | — | 5:18 | — | — | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — |
 | — | — | 8:46 | — | — | 8:47 | — | — | 8:50 | — | — | 8:51 | — | — | 8:52 | — | — | 8:52 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 6°C on Thu afternoon, min -1°C on Tue morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Sun night. Freeze-thaw conditions (max 7°C on Fri afternoon, min -4°C on Sun night). 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.