– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Thu 26 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Thu 26 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Thu 26 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of new snow. Temperatures will be below freezing (max 0°C on Sat night, min -5°C on Thu night). Winds decreasing (strong winds from the W on Fri afternoon, calm by Sat night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max 0°C on Sun night, min -7°C on Wed afternoon). Winds increasing (light winds from the WNW on Sun night, fresh winds from the S by Tue night). | ||||||||||||||||||
Friday 27 | Saturday 28 | Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | |  | | | | | | | | |  |  |  | | |
light snow | cloudy | cloudy | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | cloudy | cloudy | heavy snow | heavy snow | light snow | some clouds | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 20 | 16 | 3 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -5 | -5 | -5 | -4 | -2 | -1 | 0 | -1 | 0 | 0 | 0 | -1 | -1 | 0 | -1 | -4 | -5 | -6 | -7 |
min °C | -5 | -5 | -5 | -5 | -3 | -2 | -1 | -1 | 0 | 0 | -1 | -1 | -1 | -1 | -2 | -5 | -6 | -7 | -7 |
-14 | -14 | -14 | -13 | -10 | -8 | -1 | -5 | -2 | -2 | -8 | -7 | -6 | -4 | -10 | -14 | -14 | -14 | -12 | |
1100 | 1050 | 1100 | 900 | 1100 | 1350 | 1750 | 1500 | 2000 | 2050 | 1950 | 2000 | 1900 | 2000 | 1950 | 1400 | 1250 | 1150 | 1000 | |
Cloud base (m) | 600 | 650 | 600 | 650 | 600 | 850 | 700 | 8100 | 1800 | 8400 | 5400 | 4700 | 650 | 550 | 600 | 600 | |||
 | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | — | 5:47 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:54 | — | — | 5:55 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Temperatures will be below freezing (max 0°C on Sat night, min -5°C on Thu night). Winds decreasing (strong winds from the W on Fri afternoon, calm by Sat night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max 0°C on Sun night, min -7°C on Wed afternoon). Winds increasing (light winds from the WNW on Sun night, fresh winds from the S by Tue 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.