– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Wed 04 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Wed 04 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Wed 04 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 3°C on Sat morning, min -4°C on Thu morning). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 10mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Sat night. Freeze-thaw conditions (max 3°C on Sat afternoon, min -8°C on Mon morning). Winds decreasing (near gales from the WSW on Sun morning, light winds from the WSW by Tue morning). | ||||||||||||||||
Wed 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | |  | |  | | | | | | | |
snow shwrs | mod. snow | light snow | snow shwrs | light snow | cloudy | cloudy | light snow | light rain | light rain | heavy snow | light snow | light snow | mod. snow | light snow | light snow | heavy snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
2 | 6 | 3 | 1 | 1 | — | — | 3 | — | — | 12 | 2 | 2 | 9 | 4 | 4 | 15 | |
— | — | — | — | — | — | — | 0.1 | 0.1 | 3 | 7 | — | — | — | — | — | — | |
max °C | -1 | -1 | -3 | -3 | -3 | -1 | 0 | 2 | 3 | 3 | 3 | 2 | -3 | -5 | -7 | -7 | -7 |
min °C | -1 | -3 | -4 | -3 | -3 | -2 | 0 | 1 | 3 | 3 | 1 | 0 | -4 | -7 | -8 | -8 | -8 |
-5 | -10 | -9 | -7 | -7 | -2 | -2 | -3 | -1 | -2 | -5 | -8 | -12 | -16 | -17 | -16 | -17 | |
1300 | 1100 | 950 | 1050 | 1000 | 1200 | 1500 | 2050 | 2400 | 2100 | 2200 | 1800 | 1100 | 800 | 500 | 550 | 350 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 800 | 600 | 650 | 600 | 600 | 600 | 600 | 550 | 600 | 600 | 600 | 600 | 600 |
 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 7:35 | — | — | 6:33 | — | — |
 | 5:55 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 7:01 | — | — | 6:04 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 3°C on Sat morning, min -4°C on Thu morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 10mm) on Sat night. Becoming colder with heavy fall of snow, heaviest during Sat night. Freeze-thaw conditions (max 3°C on Sat afternoon, min -8°C on Mon morning). Winds decreasing (near gales from the WSW on Sun morning, light winds from the WSW by Tue morning).
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.