– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 18 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 18 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 18 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Mild temperatures (max 7°C on Sun afternoon, min 2°C on Sat afternoon). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Freeze-thaw conditions (max 3°C on Tue afternoon, min -2°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the N by Thu morning). | ||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | |  |  | |  | | | |  |  | | | |
cloudy | some clouds | some clouds | cloudy | rain shwrs | some clouds | light rain | risk tstorm | some clouds | rain shwrs | some clouds | some clouds | cloudy | clear | clear | some clouds | clear | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | 0.1 | — | 0.2 | 0.2 | — | 0.1 | — | — | — | — | — | — | — | |
max °C | 3 | 5 | 6 | 7 | 7 | 7 | 7 | 7 | 4 | 3 | 3 | 1 | 0 | 0 | -2 | 0 | 0 |
min °C | 2 | 3 | 6 | 7 | 6 | 7 | 7 | 4 | 3 | 3 | 2 | 1 | 0 | -2 | -2 | -1 | 0 |
-2 | 0 | 4 | 6 | 6 | 6 | 5 | 2 | 1 | 0 | -2 | -2 | -4 | -9 | -9 | -7 | -5 | |
2500 | 2850 | 2900 | 2950 | 3050 | 3150 | 3100 | 2950 | 2950 | 3000 | 3000 | 2300 | 2100 | 1900 | 1750 | 2150 | 2150 | |
Cloud base (m) | 3250 | 5050 | 3400 | 3250 | 4750 | 4850 | 4150 | 3350 | 2550 | 850 | 550 | 650 | 600 | 600 | 700 | 850 | |
 | — | — | 6:09 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — |
 | — | 8:02 | — | — | 8:04 | — | — | 8:06 | — | — | 8:07 | — | — | 8:08 | — | — | 8:09 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Mild temperatures (max 7°C on Sun afternoon, min 2°C on Sat afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 3°C on Tue afternoon, min -2°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the N 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.