– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sun 01 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sun 01 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sun 01 Mar 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 Tue afternoon. Freeze-thaw conditions (max 1°C on Sun afternoon, min -5°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the SSW by Tue morning). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Thu morning. Temperatures will be below freezing (max -1°C on Fri night, min -9°C on Wed night). Winds increasing (light winds from the N on Thu night, fresh winds from the WNW by Fri night). | |||||||||||||||||
Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | Friday 6 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  |  |  | | |  | | |  | | |  | |
clear | clear | clear | some clouds | clear | some clouds | light snow | mod. snow | heavy snow | light snow | light snow | light snow | mod. snow | light snow | snow shwrs | some clouds | light snow | cloudy | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | 2 | 8 | 14 | 4 | 5 | 5 | 6 | 2 | 3 | — | 1 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 0 | 1 | 1 | 0 | 0 | 0 | -3 | -3 | -4 | -5 | -6 | -6 | -8 | -7 | -5 | -4 | -3 | -1 |
min °C | 0 | 0 | 0 | 0 | 0 | -2 | -3 | -4 | -5 | -6 | -6 | -9 | -8 | -7 | -7 | -4 | -4 | -2 |
-4 | -2 | -5 | -5 | -4 | -10 | -12 | -11 | -12 | -13 | -14 | -18 | -16 | -15 | -14 | -12 | -11 | -9 | |
2100 | 2200 | 2400 | 2150 | 2150 | 2100 | 1750 | 1600 | 1500 | 1350 | 1250 | 850 | 850 | 950 | 900 | 1150 | 1200 | 1650 | |
Cloud base (m) | 8500 | 9200 | 5450 | 7350 | 850 | 550 | 550 | 550 | 600 | 600 | 650 | 600 | 600 | 650 | 650 | 600 | ||
 | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — |
 | — | 5:51 | — | — | 5:52 | — | — | 5:54 | — | — | 5:55 | — | — | 5:58 | — | — | 5:59 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Tue afternoon. Freeze-thaw conditions (max 1°C on Sun afternoon, min -5°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the SSW by Tue morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu morning. Temperatures will be below freezing (max -1°C on Fri night, min -9°C on Wed night). Winds increasing (light winds from the N on Thu night, fresh winds from the WNW by Fri 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.