– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Fri 19 Apr Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 4 am Fri 19 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Fri 19 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 Sat night. Freeze-thaw conditions (max 1°C on Sat morning, min -9°C on Sat night). Winds increasing (light winds from the ESE on Fri afternoon, strong winds from the SSW by Sat night). | Days 4–6 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 3°C on Tue morning, min -6°C on Tue night). Winds increasing (calm on Mon afternoon, strong winds from the S by Tue night). | |||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | | | | |  | | |  | | |  | |
clear | some clouds | clear | some clouds | cloudy | heavy snow | snow shwrs | snow shwrs | clear | clear | some clouds | some clouds | cloudy | cloudy | snow shwrs | some clouds | cloudy | cloudy | |
km/h | ||||||||||||||||||
Wave Height Map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | 32 | 4 | 2.0 | — | — | — | — | — | — | 3 | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -4 | -1 | -1 | 1 | 1 | -5 | -8 | -6 | -4 | -3 | 1 | 2 | 3 | 3 | 2 | -5 | -4 | -4 |
min°C | -4 | -2 | -1 | 0 | -2 | -9 | -8 | -7 | -6 | -4 | -1 | 1 | 2 | 3 | -6 | -6 | -5 | -4 |
-7 | -5 | -5 | -5 | -9 | -18 | -16 | -14 | -12 | -8 | -1 | 1 | -2 | -2 | -14 | -12 | -11 | -7 | |
1750 | 2000 | 1950 | 2200 | 1800 | 900 | 1000 | 1250 | 950 | 1400 | 2250 | 2450 | 2500 | 2500 | 1400 | 1300 | 1550 | 1400 | |
Cloud base (m) | 3150 | 6250 | 2850 | 600 | 600 | 750 | 750 | 750 | 1650 | 6150 | 6450 | 4900 | 750 | 650 | 850 | 800 | ||
 | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — |
 | — | — | 8:06 | — | — | 8:07 | — | — | 8:08 | — | — | 8:09 | — | — | 8:12 | — | — | 8:13 |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Sat night. Freeze-thaw conditions (max 1°C on Sat morning, min -9°C on Sat night). Winds increasing (light winds from the ESE on Fri afternoon, strong winds from the SSW by Sat night).
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 3°C on Tue morning, min -6°C on Tue night). Winds increasing (calm on Mon afternoon, strong winds from the S by Tue 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.
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