– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Fri 26 Apr Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 10 pm Fri 26 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Fri 26 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryDrizzle on Fri night followed by colder weather and a heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 3°C on Fri night, min -6°C on Mon morning). Winds increasing (light winds from the SSW on Fri night, fresh winds from the S by Sat morning). | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 5°C on Thu afternoon, min -5°C on Tue morning). Wind will be generally light. | ||||||||||||||||||
Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 1 | Thursday 2 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | |  |  | | |  |  | |  |  | | | |  |  | |
snow shwrs | light snow | light snow | light snow | light snow | mod. snow | mod. snow | light snow | snow shwrs | snow shwrs | cloudy | cloudy | some clouds | some clouds | cloudy | some clouds | some clouds | rain shwrs | rain shwrs | |
km/h | |||||||||||||||||||
Wave Height Map |  |  |  |  |  |  |  | ||||||||||||
1.0 | 3 | 2.0 | 3 | 3 | 9 | 7 | 1.0 | 2.0 | 3 | — | — | — | — | — | — | — | — | — | |
1.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.4 | 0.2 | |
max°C | 3 | 0 | -1 | 0 | -3 | -2 | -3 | -5 | -3 | -3 | -4 | -2 | -2 | -2 | 0 | 0 | 2 | 5 | 5 |
min°C | 1 | -1 | -1 | -2 | -3 | -3 | -5 | -6 | -4 | -4 | -5 | -3 | -3 | -3 | -1 | 0 | 1 | 5 | 5 |
-5 | -8 | -6 | -8 | -10 | -7 | -10 | -10 | -8 | -8 | -5 | -6 | -6 | -3 | -1 | 0 | 1 | 5 | 4 | |
1800 | 1350 | 1400 | 1350 | 1150 | 1050 | 700 | 800 | 1050 | 750 | 1000 | 1250 | 950 | 1200 | 1450 | 1500 | 1800 | 2150 | 2150 | |
Cloud base (m) | 700 | 550 | 550 | 600 | 600 | 600 | 550 | 600 | 650 | 600 | 600 | 700 | 800 | 800 | 850 | 850 | 850 | 2150 | |
 | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | 5:46 | — | — | 5:45 | — | — |
 | — | — | — | 8:17 | — | — | 8:19 | — | — | 8:21 | — | — | 8:22 | — | — | 8:23 | — | — | 8:24 |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Drizzle on Fri night followed by colder weather and a heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 3°C on Fri night, min -6°C on Mon morning). Winds increasing (light winds from the SSW on Fri night, fresh winds from the S by Sat morning).
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 5°C on Thu afternoon, min -5°C on Tue 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.
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