– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Fri 23 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Fri 23 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Fri 23 Jan 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 -1°C on Sat morning, min -6°C on Mon afternoon). Wind will be generally light. | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Wed morning. Freeze-thaw conditions (max 1°C on Tue afternoon, min -5°C on Mon night). Winds increasing (light winds from the WSW on Mon night, strong winds from the SSW by Tue night). | ||||||||||||||||||
Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | |  |  |  |  | | | | | |  | | |  | |
clear | some clouds | clear | clear | some clouds | clear | some clouds | cloudy | light snow | snow shwrs | clear | cloudy | snow shwrs | light snow | cloudy | light snow | light snow | light snow | cloudy | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | 1 | 1 | — | — | 1 | 5 | — | 4 | 3 | 3 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -1 | -1 | -1 | -2 | -2 | -2 | -4 | -5 | -3 | 0 | 1 | 1 | -5 | -3 | -1 | -1 | -1 | -1 |
min °C | -3 | -1 | -2 | -2 | -2 | -2 | -4 | -5 | -6 | -5 | -1 | 0 | -5 | -5 | -4 | -3 | -1 | -1 | -2 |
-9 | -6 | -6 | -5 | -5 | -7 | -9 | -12 | -12 | -11 | -5 | -5 | -14 | -11 | -10 | -8 | -8 | -8 | -8 | |
1700 | 1800 | 1750 | 1750 | 1750 | 1700 | 1600 | 1500 | 1150 | 1150 | 1800 | 2200 | 2200 | 1150 | 1350 | 1600 | 1950 | 1950 | 1850 | |
Cloud base (m) | 8650 | 6650 | 6850 | 4700 | 3000 | 2150 | 600 | 650 | 4800 | 950 | 600 | 600 | 600 | 600 | 750 | ||||
 | — | 7:47 | — | — | 7:46 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — | 7:41 | — | — |
 | — | — | 4:52 | — | — | 4:54 | — | — | 4:55 | — | — | 4:58 | — | — | 4:59 | — | — | 5:00 | — |
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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 -1°C on Sat morning, min -6°C on Mon afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed morning. Freeze-thaw conditions (max 1°C on Tue afternoon, min -5°C on Mon night). Winds increasing (light winds from the WSW on Mon night, strong winds from the SSW 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.