– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9pm Thu 27 Jan Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 9pm Thu 27 Jan Local Time
Updates in: hr min s
Update imminent Issued: 9pm Thu 27 Jan Local Time
Updates in: hr min s
Update imminent 
3 South Twin Sister Elevations: 3 Forecast Elevations:
South Twin Sister Weather (Days 0-3):A heavy fall of snow, heaviest during Sun morning. Freeze-thaw conditions (max 5°C on Thu night, min -8°C on Sun afternoon). Winds increasing (light winds from the SSW on Thu night, strong winds from the WSW by Sun afternoon). |
(Days 3-6):A moderate fall of snow, heaviest on Sun night. Temperatures will be well below freezing (max -9°C on Tue night, min -12°C on Mon night). Winds decreasing (fresh winds from the W on Sun night, light winds from the NW by Tue afternoon). |
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Thu
27
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Friday
28
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Saturday
29
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Sunday
30
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Monday
31
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Tuesday
1
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Wed
2
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night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM |
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| some clouds | clear | clear | some clouds | some clouds | cloudy | mod. snow | heavy snow | snow shwrs | heavy snow | mod. snow | snow shwrs | light snow | some clouds | some clouds | cloudy | cloudy | some clouds | |
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Wind
km/h
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| - | - | - | - | - | - | 7 | 11 | 3 | 11 | 6 | 1 | 1 | - | - | - | - | - | |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
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Max
°C
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5 | 3 | 1 | 0 | -2 | -3 | -4 | -4 | -6 | -10 | -11 | -10 | -11 | -10 | -10 | -9 | -10 | -9 |
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Min
°C
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4 | 2 | 1 | -1 | -2 | -3 | -4 | -5 | -8 | -10 | -11 | -11 | -12 | -10 | -10 | -10 | -10 | -10 |
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Chill
°C
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1 | -2 | -4 | -6 | -9 | -10 | -11 | -13 | -15 | -20 | -21 | -17 | -19 | -16 | -15 | -14 | -17 | -15 |
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| 2850 | 2700 | 2400 | 1950 | 1850 | 1650 | 1250 | 1450 | 1250 | 600 | 600 | 550 | 0 | 350 | 500 | 0 | 300 | 450 | |
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- | 7:41 | - | - | 7:41 | - | - | 7:39 | - | - | 7:37 | - | - | 7:37 | - | - | 7:35 | - |
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- | - | 4:59 | - | - | 5:00 | - | - | 5:02 | - | - | 5:04 | - | - | 5:06 | - | - | 5:07 |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Sun morning. Freeze-thaw conditions (max 5°C on Thu night, min -8°C on Sun afternoon). Winds increasing (light winds from the SSW on Thu night, strong winds from the WSW by Sun afternoon).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Sun night. Temperatures will be well below freezing (max -9°C on Tue night, min -12°C on Mon night). Winds decreasing (fresh winds from the W on Sun night, light winds from the NW by Tue afternoon).
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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