– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Sun 01 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Sun 01 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Sun 01 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Sun night, min -5°C on Tue night). Winds increasing (light winds from the NW on Sun night, strong winds from the SSW by Tue morning). | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Wed night. Temperatures will be below freezing (max 0°C on Fri night, min -7°C on Wed night). Winds increasing (light winds from the W on Thu night, strong winds from the W by Sat afternoon). | ||||||||||||||||||
Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | Friday 6 | Saturday 7 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  | | |  | |  | | | | | | | | |
clear | some clouds | clear | some clouds | light snow | light snow | heavy snow | light snow | light snow | light snow | light snow | cloudy | light snow | cloudy | cloudy | light snow | cloudy | light snow | light snow | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | 2 | 4 | 26 | 3 | 3 | 5 | 2 | — | 3 | — | — | 4 | — | 3 | 3 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 2 | 1 | 1 | 0 | -2 | -3 | -3 | -5 | -5 | -6 | -7 | -6 | -4 | -3 | -2 | 0 | 0 | 0 | -1 |
min °C | 1 | 0 | 0 | -2 | -2 | -3 | -5 | -5 | -5 | -7 | -7 | -7 | -5 | -4 | -2 | -2 | 0 | -1 | -3 |
-4 | -5 | -5 | -10 | -10 | -11 | -12 | -11 | -11 | -14 | -15 | -15 | -11 | -10 | -8 | -9 | -7 | -8 | -11 | |
2400 | 2250 | 2150 | 2050 | 1800 | 1650 | 1500 | 1300 | 1400 | 1050 | 850 | 950 | 1050 | 1400 | 1650 | 1700 | 2250 | 2250 | 1800 | |
Cloud base (m) | 5400 | 6000 | 750 | 550 | 550 | 550 | 700 | 600 | 700 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | ||
 | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — |
 | — | — | 5:52 | — | — | 5:54 | — | — | 5:55 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Sun night, min -5°C on Tue night). Winds increasing (light winds from the NW on Sun night, strong winds from the SSW by Tue morning).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed night. Temperatures will be below freezing (max 0°C on Fri night, min -7°C on Wed night). Winds increasing (light winds from the W on Thu night, strong winds from the W by Sat 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.