– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast,
United States
Issued: 4am Sat 31 Oct Local TimeUpdates in: hr min sUpdate imminent
Issued: 4am Sat 31 Oct Local Time
Updates in: hr min s
Update imminent Issued: 4am Sat 31 Oct Local Time
Updates in: hr min s
Update imminent 
South Twin Sister Weather (Days 0-3):Some drizzle, heaviest during Mon night. Freeze-thaw conditions (max 9°C on Sun afternoon, min 0°C on Sat morning). Winds increasing (light winds from the WSW on Sun morning, near gales from the SSW by Mon night). |
(Days 3-6):A heavy fall of snow, heaviest during Tue morning. Freeze-thaw conditions (max 2°C on Tue morning, min -8°C on Thu morning). Winds decreasing (severe gales from the SW on Wed night, light winds from the WSW by Thu afternoon). |
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AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night |
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Wind
km/h
|
 15 |
15 |
15 |
10 |
15 |
25 |
30 |
30 |
55 |
35 |
35 |
65 |
35 |
70 |
60 |
30 |
20 |
30 |
| clear | clear | clear | clear | clear | clear | clear | clear | rain shwrs | mod. snow | light snow | mod. snow | snow shwrs | light snow | heavy snow | snow shwrs | some clouds | some clouds | |
Rain
mm
|
- | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - |
Snow
cm
|
- | - | - | - | - | - | - | - | - | 10 | 1 | 6 | 1 | 2 | 14 | 2 | - | - |
|
High
°C
|
0 | 3 | 7 | 8 | 9 | 9 | 8 | 7 | 7 | 2 | 1 | 1 | 0 | 1 | 2 | -7 | -6 | -5 |
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Low
°C
|
0 | 1 | 4 | 7 | 8 | 8 | 7 | 7 | 3 | 1 | 1 | 1 | 0 | 0 | -5 | -8 | -7 | -6 |
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Chill
°C
|
-4 | -1 | 4 | 6 | 7 | 6 | 4 | 3 | 2 | -4 | -5 | -6 | -6 | -8 | -7 | -18 | -12 | -12 |
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Freezing level
m
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2300 | 3350 | 3450 | 3800 | 3750 | 3600 | 3550 | 3450 | 3250 | 2550 | 2300 | 2400 | 2200 | 2250 | 1750 | 1100 | 1300 | 1450 |
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7:54 | - | - | 7:54 | - | - | 7:56 | - | - | 7:58 | - | - | 8:00 | - | - | 8:00 | - | - |
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- | 5:47 | - | - | 5:45 | - | - | 5:45 | - | - | 5:43 | - | - | 5:42 | - | - | 5:39 | - |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Mon nightFreeze-thaw conditions (max 9°C on Sun afternoon, min 0°C on Sat morning)Winds increasing (light winds from the WSW on Sun morning, near gales from the SSW by Mon night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue morningFreeze-thaw conditions (max 2°C on Tue morning, min -8°C on Thu morning)Winds decreasing (severe gales from the SW on Wed night, light winds from the WSW by Thu 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.
| Weather Station | Temp. | Weather | Wind | Cloud / Visibility |
|---|---|---|---|---|
Skagit Burlingto / t Vernon Airport | | |||
Bellingham Airport | | |||
BUOY-46118 | ||||
SHIP7321 | ||||
BUOY-PBFW1 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.
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