– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Tue 22 Oct Local TimeUpdates in: hr min sUpdate imminent
South Twin SisterWeather Forecast, United States
Issued: 10 pm Tue 22 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Tue 22 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Freeze-thaw conditions (max 6°C on Fri afternoon, min -5°C on Wed night). Winds increasing (calm on Thu night, fresh winds from the S by Fri afternoon). | Days 5–7 Weather SummaryMild with light rain (total 2mm) on Fri night Becoming colder with a light covering of snow, mostly falling on Sun night. Freeze-thaw conditions (max 5°C on Fri night, min -7°C on Mon morning). Winds decreasing (near gales from the SSW on Fri night, light winds from the WSW by Sun night). | ||||||||||||||||||
Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | |  |  | |  |  | |  | |  | | |  | | |
clear | clear | some clouds | clear | clear | some clouds | some clouds | cloudy | cloudy | snow shwrs | light rain | cloudy | cloudy | cloudy | light snow | snow shwrs | some clouds | snow shwrs | snow shwrs | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | 1.0 | — | — | — | — | 1.0 | 3 | — | 2.0 | 8 | |
— | — | — | — | — | — | — | — | — | 1.1 | 0.9 | — | — | — | — | — | — | — | — | |
max°C | -1 | -3 | -4 | -5 | -4 | -2 | 3 | 4 | 6 | 5 | 3 | 0 | 0 | 0 | -1 | -2 | -6 | -6 | -7 |
min°C | -2 | -4 | -4 | -5 | -5 | -3 | 0 | 4 | 5 | 2 | 1 | 0 | 0 | 0 | -1 | -5 | -7 | -7 | -7 |
-6 | -9 | -10 | -12 | -11 | -8 | -3 | 0 | 0 | -6 | -6 | -7 | -8 | -5 | -6 | -12 | -13 | -14 | -15 | |
1700 | 1300 | 1250 | 950 | 1100 | 1450 | 2700 | 2950 | 3050 | 2650 | 2350 | 2050 | 2150 | 2100 | 1850 | 1400 | 1200 | 1150 | 1050 | |
Cloud base (m) | 700 | 650 | 750 | 700 | 800 | 4650 | 4450 | 2450 | 650 | 800 | 1550 | 1800 | 800 | 700 | 750 | 700 | 550 | ||
 | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — | 7:46 | — | — | 7:47 | — | — | 7:48 | — | — |
 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:55 | — | — | 5:54 | — | — | 5:52 | — |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Freeze-thaw conditions (max 6°C on Fri afternoon, min -5°C on Wed night). Winds increasing (calm on Thu night, fresh winds from the S by Fri afternoon).
South Twin Sister Weather (Days 3-6):
Mild with light rain (total 2mm) on Fri night Becoming colder with a light covering of snow, mostly falling on Sun night. Freeze-thaw conditions (max 5°C on Fri night, min -7°C on Mon morning). Winds decreasing (near gales from the SSW on Fri night, light winds from the WSW by Sun 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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