– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sun 19 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sun 19 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sun 19 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 2mm) at first, then becoming colder with a dusting of snow on Wed morning. Very mild (max 12°C on Sun afternoon, min 1°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 6°C on Thu afternoon, min 0°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  |  | |  |  |  | | | |  | |
some clouds | clear | cloudy | light rain | risk tstorm | some clouds | light rain | light rain | light snow | light snow | some clouds | clear | rain shwrs | clear | some clouds | some clouds | rain shwrs | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | 1 | 3 | — | — | — | — | — | — | — | |
— | — | — | 0.1 | 0.6 | — | 0.3 | 1.3 | — | — | — | — | 0.1 | — | — | — | 0.4 | |
max °C | 12 | 12 | 11 | 12 | 11 | 6 | 4 | 3 | 1 | 0 | 0 | 2 | 6 | 6 | 4 | 6 | 6 |
min °C | 12 | 11 | 11 | 12 | 8 | 5 | 3 | 1 | 1 | 0 | 0 | 0 | 5 | 5 | 4 | 6 | 6 |
12 | 11 | 11 | 12 | 8 | 5 | 0 | 1 | 1 | -3 | 0 | -4 | 2 | 4 | 4 | 5 | 6 | |
2950 | 3000 | 3100 | 3150 | 2900 | 2550 | 2300 | 1950 | 1700 | 1500 | 1600 | 1800 | 2300 | 2550 | 2450 | 2600 | 2350 | |
Cloud base (m) | 5100 | 4800 | 4300 | 3100 | 2400 | 850 | 550 | 550 | 550 | 800 | 800 | 6200 | 2950 | ||||
 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — | 6:00 | — | — |
 | — | 8:04 | — | — | 8:06 | — | — | 8:07 | — | — | 8:08 | — | — | 8:09 | — | — | 8:12 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 2mm) at first, then becoming colder with a dusting of snow on Wed morning. Very mild (max 12°C on Sun afternoon, min 1°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 6°C on Thu afternoon, min 0°C on Wed 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.