– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Sun 17 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Sun 17 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Sun 17 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 1°C on Tue night, min -4°C on Sun morning). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 4°C on Wed night, min -1°C on Fri night). Winds increasing (calm on Wed morning, fresh winds from the NW by Wed night). | |||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | | |  |  | |  | | | | |  |  | | | |
some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | light snow | cloudy | some clouds | clear | some clouds | some clouds | some clouds | some clouds | rain shwrs | rain shwrs | rain shwrs | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | 0.1 | 0.3 | — | |
max °C | -2 | 0 | 0 | -1 | 0 | 0 | -1 | -1 | 1 | 1 | 3 | 4 | 3 | 3 | 4 | 3 | 4 | 4 |
min °C | -4 | 0 | -1 | -1 | 0 | -1 | -2 | -1 | 0 | 1 | 2 | 3 | 2 | 2 | 3 | 3 | 3 | -1 |
-10 | -3 | -5 | -5 | -4 | -5 | -6 | -5 | -5 | 0 | 2 | -2 | -3 | -2 | -1 | 0 | 0 | -7 | |
1750 | 2150 | 2050 | 1900 | 2100 | 2100 | 1900 | 2000 | 2300 | 2600 | 2950 | 3150 | 2550 | 2750 | 2800 | 3250 | 3000 | 2450 | |
Cloud base (m) | 900 | 1750 | 6000 | 2000 | 2050 | 650 | 600 | 1000 | 950 | 1600 | 2050 | 2050 | 2350 | 700 | 700 | 1550 | ||
 | 5:24 | — | — | 5:22 | — | — | 5:22 | — | — | 5:20 | — | — | 5:18 | — | — | 5:18 | — | — |
 | — | — | 8:44 | — | — | 8:45 | — | — | 8:46 | — | — | 8:47 | — | — | 8:50 | — | — | 8:51 |
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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 1°C on Tue night, min -4°C on Sun morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 4°C on Wed night, min -1°C on Fri night). Winds increasing (calm on Wed morning, fresh winds from the NW by Wed night).
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.