– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Wed 19 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Wed 19 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Wed 19 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 1°C on Wed morning, min -5°C on Wed night). Winds increasing (light winds from the SSW on Thu afternoon, fresh winds from the WSW by Fri night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max 0°C on Sat night, min -8°C on Mon afternoon). Winds decreasing (near gales from the SSW on Sun night, light winds from the N by Mon night). | |||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  |  | | |  |  | | | | |  |  |  |  | |
some clouds | some clouds | cloudy | some clouds | cloudy | some clouds | cloudy | cloudy | light snow | light snow | light snow | light snow | light snow | light snow | heavy snow | snow shwrs | clear | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | 2 | 1 | 2 | 5 | 3 | 5 | 11 | 3 | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 1 | 0 | -2 | -5 | -4 | -2 | -2 | -1 | 0 | -1 | -1 | 0 | -1 | 0 | -1 | -7 | -8 | -7 |
min°C | 0 | -1 | -5 | -5 | -4 | -4 | -2 | -1 | 0 | -1 | -2 | -1 | -1 | 0 | -5 | -7 | -8 | -8 |
-4 | -7 | -12 | -11 | -8 | -8 | -8 | -7 | -6 | -7 | -7 | -7 | -8 | -7 | -15 | -17 | -16 | -16 | |
2250 | 2150 | 1750 | 1300 | 1300 | 1400 | 1450 | 1850 | 2150 | 1950 | 1950 | 2000 | 2000 | 2000 | 1750 | 1100 | 1050 | 850 | |
Cloud base (m) | 6650 | 5900 | 2300 | 650 | 650 | 850 | 900 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 550 | 650 | 750 | 700 |
 | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — |
 | — | 4:22 | — | — | 4:22 | — | — | 4:21 | — | — | 4:20 | — | — | 4:19 | — | — | 4:17 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 1°C on Wed morning, min -5°C on Wed night). Winds increasing (light winds from the SSW on Thu afternoon, fresh winds from the WSW by Fri night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max 0°C on Sat night, min -8°C on Mon afternoon). Winds decreasing (near gales from the SSW on Sun night, light winds from the N by Mon 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.