– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sat 28 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sat 28 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sat 28 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Temperatures will be below freezing (max 0°C on Sat night, min -2°C on Sat morning). Winds increasing (calm on Sat night, strong winds from the SSW by Mon night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -3°C on Tue morning, min -8°C on Wed night). Winds decreasing (strong winds from the SSW on Tue morning, light winds from the SW by Thu morning). | |||||||||||||||||
Saturday 28 | Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | | |  | |  |  | |  | | | | | | | |
clear | clear | clear | clear | clear | clear | some clouds | clear | some clouds | mod. snow | mod. snow | heavy snow | mod. snow | mod. snow | heavy snow | mod. snow | mod. snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | 6 | 7 | 38 | 6 | 9 | 24 | 6 | 8 | 12 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -1 | -1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -3 | -3 | -4 | -6 | -6 | -7 | -8 | -6 | -6 |
min °C | -2 | -1 | -1 | -1 | 0 | 0 | -1 | 0 | -2 | -3 | -4 | -6 | -6 | -6 | -8 | -8 | -7 | -7 |
-7 | -6 | -3 | -4 | -2 | -4 | -7 | -5 | -10 | -12 | -13 | -14 | -13 | -13 | -18 | -16 | -14 | -15 | |
1250 | 1600 | 1950 | 1750 | 2050 | 2100 | 2050 | 2050 | 2100 | 1700 | 1600 | 1300 | 1150 | 1150 | 1050 | 850 | 950 | 1050 | |
Cloud base (m) | 600 | 750 | 9150 | 8650 | 1850 | 5350 | 8000 | 700 | 550 | 600 | 550 | 550 | 600 | 600 | 600 | 600 | ||
 | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — |
 | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:54 | — | — | 5:55 | — | — | 5:58 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Temperatures will be below freezing (max 0°C on Sat night, min -2°C on Sat morning). Winds increasing (calm on Sat night, strong winds from the SSW by Mon night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -3°C on Tue morning, min -8°C on Wed night). Winds decreasing (strong winds from the SSW on Tue morning, light winds from the SW by Thu morning).
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.