– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Thu 20 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Thu 20 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Thu 20 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Sun morning. Temperatures will be below freezing (max 0°C on Fri night, min -9°C on Sun afternoon). Winds increasing (light winds from the W on Thu night, fresh winds from the SSW by Sat afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -2°C on Wed morning, min -10°C on Sun night). Winds increasing (light winds from the WSW on Tue morning, fresh winds from the SW by Wed morning). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  |  |  |  | | |  | | | | |  | |  | |
some clouds | cloudy | cloudy | cloudy | some clouds | light snow | heavy snow | heavy snow | snow shwrs | heavy snow | snow shwrs | clear | some clouds | cloudy | cloudy | heavy snow | mod. snow | light snow | mod. snow | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | 4 | 15 | 23 | 11 | 11 | 2 | — | — | — | — | 14 | 6 | 5 | 7 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -1 | -1 | -1 | 0 | 0 | -1 | -2 | -4 | -8 | -9 | -9 | -9 | -9 | -8 | -7 | -4 | -2 | -2 | -1 |
min°C | -2 | -2 | -1 | -1 | 0 | -2 | -2 | -6 | -9 | -10 | -10 | -9 | -9 | -8 | -8 | -6 | -2 | -2 | -1 |
-7 | -9 | -7 | -7 | -5 | -10 | -9 | -13 | -19 | -19 | -18 | -17 | -16 | -11 | -12 | -12 | -9 | -9 | -8 | |
1700 | 1800 | 1700 | 2050 | 2050 | 1950 | 1750 | 1400 | 950 | 800 | 750 | 650 | 0 | 750 | 800 | 750 | 1200 | 1400 | 2000 | |
Cloud base (m) | 900 | 2450 | 800 | 750 | 1500 | 800 | 550 | 550 | 600 | 600 | 600 | 650 | 700 | 700 | 2100 | 600 | 550 | 600 | 550 |
 | — | 7:24 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — |
 | — | — | 4:21 | — | — | 4:20 | — | — | 4:19 | — | — | 4:17 | — | — | 4:17 | — | — | 4:16 | — |
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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 Sun morning. Temperatures will be below freezing (max 0°C on Fri night, min -9°C on Sun afternoon). Winds increasing (light winds from the W on Thu night, fresh winds from the SSW by Sat afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -2°C on Wed morning, min -10°C on Sun night). Winds increasing (light winds from the WSW on Tue morning, fresh winds from the SW by Wed morning).
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.