– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Thu 19 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Thu 19 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Thu 19 Feb 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. Temperatures will be below freezing (max -2°C on Sat night, min -13°C on Thu morning). Wind will be generally light. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue afternoon. Temperatures will be below freezing (max -3°C on Sun morning, min -10°C on Tue night). Mainly near gales. | |||||||||||||||||
Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | |  |  | | | |  | | |
some clouds | clear | some clouds | cloudy | light snow | cloudy | cloudy | light snow | light snow | cloudy | light snow | mod. snow | mod. snow | light snow | mod. snow | mod. snow | heavy snow | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | 1 | — | — | 1 | 2 | — | 2 | 7 | 6 | 2 | 10 | 10 | 18 | 4 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -13 | -11 | -11 | -10 | -10 | -7 | -6 | -4 | -2 | -3 | -4 | -5 | -4 | -5 | -5 | -8 | -8 | -9 |
min °C | -13 | -13 | -11 | -11 | -10 | -9 | -6 | -5 | -4 | -4 | -4 | -6 | -4 | -5 | -8 | -8 | -9 | -10 |
-19 | -17 | -16 | -17 | -16 | -14 | -13 | -12 | -10 | -12 | -12 | -14 | -11 | -12 | -16 | -15 | -17 | -18 | |
300 | 400 | 0 | 400 | 600 | 300 | 1150 | 1050 | 1550 | 1600 | 1400 | 1100 | 1250 | 1350 | 1250 | 1000 | 850 | 700 | |
Cloud base (m) | 1550 | 650 | 600 | 600 | 600 | 1950 | 2450 | 1600 | 600 | 1800 | 800 | 600 | 550 | 550 | 550 | 600 | 550 | 600 |
 | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — |
 | — | 5:35 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:42 | — | — | 5:43 | — |
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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 -2°C on Sat night, min -13°C on Thu morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue afternoon. Temperatures will be below freezing (max -3°C on Sun morning, min -10°C on Tue night). Mainly near gales.
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.