– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9pm Mon 01 Mar Local TimeUpdates in: hr min sUpdate imminent
Weather Forecast, United States
Issued: 9pm Mon 01 Mar Local Time
Updates in: hr min s
Update imminent Issued: 9pm Mon 01 Mar Local Time
Updates in: hr min s
Update imminent 
South Twin Sister Weather (Days 0-3):A light covering of new snow mostly falling on Thu afternoon. Temperatures will be below freezing (max -2°C on Wed night, min -8°C on Mon night). Winds increasing (light winds from the WSW on Tue morning, strong winds from the SSE by Thu morning). |
(Days 3-6):A heavy fall of snow, heaviest during Fri afternoon. Temperatures will be below freezing (max -4°C on Thu night, min -10°C on Sat morning). Winds decreasing (near gales from the S on Thu night, light winds from the SW by Sat night). |
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Mon
1
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Tuesday
2
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Wednesday
3
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Thursday
4
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Friday
5
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Saturday
6
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Sun
7
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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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 |
 |
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Wind
km/h
|
 30 |
20 |
20 |
25 |
25 |
30 |
40 |
35 |
35 |
55 |
55 |
45 |
30 |
20 |
20 |
20 |
25 |
15 |
| snow shwrs | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | light snow | mod. snow | mod. snow | mod. snow | cloudy | light snow | snow shwrs | some clouds | some clouds | some clouds | |
Rain
mm
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Snow
cm
|
4 | - | - | - | - | - | - | - | 3 | 7 | 7 | 7 | - | 5 | 1 | - | - | - |
|
High
°C
|
-6 | -7 | -8 | -6 | -5 | -3 | -2 | -2 | -3 | -4 | -5 | -7 | -8 | -9 | -10 | -9 | -8 | -7 |
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Low
°C
|
-8 | -8 | -8 | -7 | -5 | -4 | -3 | -3 | -4 | -4 | -5 | -8 | -9 | -10 | -10 | -10 | -8 | -7 |
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Chill
°C
|
-14 | -14 | -15 | -13 | -12 | -10 | -10 | -11 | -11 | -14 | -15 | -17 | -16 | -17 | -18 | -15 | -16 | -13 |
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Freezing level
m
|
1000 | 850 | 850 | 700 | 1200 | 1550 | 1850 | 1800 | 1750 | 1450 | 1350 | 1050 | 750 | 800 | 900 | 650 | 1050 | 1300 |
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- | 6:47 | - | - | 6:45 | - | - | 6:43 | - | - | 6:41 | - | - | 6:39 | - | - | 6:37 | - |
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- | - | 5:52 | - | - | 5:54 | - | - | 5:55 | - | - | 5:58 | - | - | 5:59 | - | - | 6:00 |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A light covering of new snow mostly falling on Thu afternoonTemperatures will be below freezing (max -2°C on Wed night, min -8°C on Mon night)Winds increasing (light winds from the WSW on Tue morning, strong winds from the SSE by Thu morning).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri afternoonTemperatures will be below freezing (max -4°C on Thu night, min -10°C on Sat morning)Winds decreasing (near gales from the S on Thu night, light winds from the SW by Sat 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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