– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Wed 25 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Wed 25 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 25 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA light covering of new snow mostly falling on Wed night. Freeze-thaw conditions (max 2°C on Fri morning, min -7°C on Wed night). Winds decreasing (fresh winds from the W on Wed night, calm by Thu night). | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Sun night. Temperatures will be below freezing (max -3°C on Sat night, min -8°C on Mon morning). Wind will be generally light. | ||||||||||||||||||
Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | Tuesday 31 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | |  | | | | |  | |  |  | | |  | |
snow shwrs | snow shwrs | some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | cloudy | some clouds | some clouds | cloudy | mod. snow | snow shwrs | clear | clear | cloudy | cloudy | cloudy | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
7 | 1 | — | — | — | — | — | — | — | — | — | — | 7 | 1 | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -6 | -6 | -4 | 0 | 2 | 1 | 1 | -1 | -2 | -3 | -5 | -3 | -4 | -8 | -7 | -6 | -6 | -3 | -2 |
min °C | -7 | -7 | -5 | -4 | 1 | 1 | -1 | -2 | -3 | -5 | -5 | -3 | -7 | -8 | -7 | -7 | -7 | -4 | -3 |
-15 | -11 | -8 | -4 | -2 | 0 | -4 | -5 | -7 | -9 | -9 | -6 | -13 | -14 | -12 | -11 | -7 | -4 | -7 | |
0 | 750 | 1000 | 0 | 1750 | 1700 | 1550 | 1200 | 1100 | 550 | 900 | 1150 | 700 | 550 | 650 | 0 | 800 | 1050 | 1050 | |
Cloud base (m) | 750 | 700 | 2050 | 600 | 950 | 5350 | 1600 | 800 | 850 | 650 | 850 | 2500 | 550 | 650 | 1600 | 650 | 5550 | 3050 | 2000 |
 | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — |
 | — | — | 7:29 | — | — | 7:30 | — | — | 7:31 | — | — | 7:32 | — | — | 7:35 | — | — | 7:36 | — |
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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. Freeze-thaw conditions (max 2°C on Fri morning, min -7°C on Wed night). Winds decreasing (fresh winds from the W on Wed night, calm by Thu night).
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Sun night. Temperatures will be below freezing (max -3°C on Sat night, min -8°C on Mon morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.