– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Fri 26 Apr Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 4 am Fri 26 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Fri 26 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -2°C on Fri afternoon, min -10°C on Sun night). Winds increasing (light winds from the SSE on Fri morning, fresh winds from the S by Sat morning). | Days 4–6 Weather SummaryA light covering of new snow mostly falling on Mon afternoon. Freeze-thaw conditions (max 2°C on Wed night, min -10°C on Mon morning). Wind will be generally light. | |||||||||||||||||
Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 1 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  |  | |  | | |  |  |  | | |
light snow | cloudy | light snow | light snow | light snow | light snow | light snow | mod. snow | heavy snow | snow shwrs | snow shwrs | snow shwrs | light snow | light snow | clear | clear | some clouds | clear | |
km/h | ||||||||||||||||||
Wave Height Map |  |  |  |  |  |  | ||||||||||||
2.0 | — | 4 | 4 | 2.0 | 4 | 2.0 | 9 | 16 | 2.0 | 3 | 1.0 | 1.0 | 1.0 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -3 | -2 | -2 | -3 | -4 | -4 | -6 | -6 | -6 | -10 | -8 | -8 | -8 | -6 | -4 | -3 | 0 | 2 |
min°C | -3 | -3 | -3 | -4 | -5 | -6 | -6 | -6 | -10 | -10 | -9 | -8 | -8 | -7 | -5 | -4 | -1 | 0 |
-7 | -6 | -10 | -12 | -13 | -14 | -14 | -14 | -17 | -17 | -16 | -13 | -14 | -14 | -11 | -6 | -3 | -4 | |
1550 | 1800 | 1750 | 1500 | 1400 | 1350 | 1200 | 1250 | 650 | 800 | 1100 | 650 | 900 | 1250 | 950 | 1450 | 2100 | 2350 | |
Cloud base (m) | 550 | 600 | 700 | 550 | 600 | 550 | 550 | 550 | 600 | 600 | 650 | 600 | 600 | 950 | 800 | 850 | 1000 | 2500 |
 | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | 5:46 | — | — |
 | — | — | 8:15 | — | — | 8:17 | — | — | 8:19 | — | — | 8:21 | — | — | 8:22 | — | — | 8:23 |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -2°C on Fri afternoon, min -10°C on Sun night). Winds increasing (light winds from the SSE on Fri morning, fresh winds from the S by Sat morning).
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Mon afternoon. Freeze-thaw conditions (max 2°C on Wed night, min -10°C on Mon morning). 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.
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