– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Mon 24 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Mon 24 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Mon 24 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA light covering of new snow mostly falling on Wed night. Temperatures will be below freezing (max 0°C on Wed night, min -9°C on Mon morning). Winds increasing (light winds from the SW on Mon night, fresh winds from the SSW by Wed night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Thu morning, min -7°C on Thu night). Winds decreasing (strong winds from the SSW on Thu night, light winds from the S by Fri afternoon). | |||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | | |  | |  |  | | |  |  |  |  | |
light snow | light snow | some clouds | cloudy | cloudy | some clouds | cloudy | cloudy | light snow | light snow | mod. snow | heavy snow | light snow | light snow | snow shwrs | some clouds | clear | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
1 | 1 | — | — | — | — | — | — | 4 | 2 | 8 | 36 | 1 | 4 | 6 | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -8 | -8 | -7 | -5 | -4 | -2 | -1 | -1 | 0 | -1 | -1 | -3 | -6 | -6 | -6 | -6 | -5 | -5 |
min°C | -9 | -8 | -8 | -6 | -5 | -4 | -2 | -2 | -2 | -2 | -2 | -7 | -6 | -6 | -7 | -6 | -6 | -5 |
-15 | -13 | -12 | -13 | -8 | -9 | -7 | -5 | -7 | -11 | -10 | -16 | -12 | -10 | -11 | -12 | -13 | -11 | |
900 | 900 | 800 | 1150 | 1000 | 1350 | 1750 | 1950 | 2000 | 1900 | 1700 | 1250 | 1200 | 1200 | 1000 | 950 | 600 | 0 | |
Cloud base (m) | 800 | 900 | 650 | 2550 | 2000 | 600 | 900 | 850 | 600 | 550 | 550 | 600 | 600 | 550 | 550 | 1850 | 2200 | 600 |
 | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:37 | — | — |
 | — | 4:17 | — | — | 4:17 | — | — | 4:16 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A light covering of new snow mostly falling on Wed night. Temperatures will be below freezing (max 0°C on Wed night, min -9°C on Mon morning). Winds increasing (light winds from the SW on Mon night, fresh winds from the SSW by Wed night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Thu morning, min -7°C on Thu night). Winds decreasing (strong winds from the SSW on Thu night, light winds from the S by Fri 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.