– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Sat 31 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sat 31 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sat 31 Jan 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 Sun morning. Becoming mild with drizzle, on Mon night. Freeze-thaw conditions (max 7°C on Sat afternoon, min -1°C on Mon morning). Winds decreasing (fresh winds from the S on Sat night, light winds from the S by Tue morning). | Days 5–7 Weather SummaryMostly dry. Very mild (max 13°C on Thu night, min 8°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||
Sat 31 | Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  |  | | |  | |  |  | | |  | |
some clouds | light snow | mod. snow | light snow | snow shwrs | light snow | cloudy | light rain | cloudy | cloudy | cloudy | some clouds | clear | clear | clear | clear | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | 3 | 8 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
— | 0.2 | — | — | — | — | — | 1.1 | — | — | — | — | — | — | — | — | — | |
max °C | 7 | 7 | 0 | 0 | 0 | -1 | 2 | 5 | 7 | 8 | 9 | 11 | 12 | 10 | 11 | 12 | 13 |
min °C | 6 | 0 | 0 | 0 | 0 | -1 | 0 | 3 | 6 | 8 | 8 | 10 | 10 | 9 | 10 | 12 | 11 |
2 | -7 | -6 | -5 | -5 | -6 | -4 | 0 | 5 | 6 | 5 | 10 | 9 | 7 | 10 | 12 | 11 | |
2400 | 2250 | 1500 | 1550 | 1500 | 1300 | 1500 | 2150 | 2700 | 2800 | 2700 | 3100 | 3300 | 3150 | 3350 | 3400 | 3600 | |
Cloud base (m) | 600 | 3400 | 800 | 600 | 600 | 850 | 600 | 650 | 1050 | 1000 | 2950 | 2850 | |||||
 | — | — | 7:37 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — |
 | 5:04 | — | — | 5:06 | — | — | 5:07 | — | — | 5:08 | — | — | 5:10 | — | — | 5:12 | — |
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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 Sun morning. Becoming mild with drizzle, on Mon night. Freeze-thaw conditions (max 7°C on Sat afternoon, min -1°C on Mon morning). Winds decreasing (fresh winds from the S on Sat night, light winds from the S by Tue morning).
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 13°C on Thu night, min 8°C on Tue afternoon). 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.