– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 01 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 01 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 01 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 6mm) at first, then becoming colder with a dusting of snow on Sun morning. Freeze-thaw conditions (max 12°C on Mon night, min 0°C on Sat night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 17°C on Wed night, min 13°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  | | | | | | | | | | |
rain shwrs | some clouds | snow shwrs | snow shwrs | rain shwrs | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | |
Cloud base (m) | 650 | 1700 | 800 | 800 | 8450 | 9050 | |||||||||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 4 | — | — | 1.6 | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 3 | 2 | 1 | 2 | 5 | 8 | 11 | 12 | 12 | 14 | 14 | 14 | 16 | 17 | 16 | 17 | 17 |
min °C | 2 | 0 | 0 | 1 | 3 | 6 | 10 | 11 | 12 | 13 | 14 | 14 | 16 | 16 | 16 | 17 | 16 |
chill °C | -3 | -5 | -4 | -2 | 0 | 3 | 9 | 10 | 12 | 13 | 14 | 14 | 16 | 16 | 16 | 17 | 15 |
Freezing level m | 2500 | 2300 | 2250 | 2500 | 3100 | 3550 | 3750 | 3800 | 3900 | 4200 | 4400 | 4450 | 4600 | 4700 | 4800 | 4900 | 4700 |
 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:48 | — | — |
 | — | 8:45 | — | — | 8:44 | — | — | 8:43 | — | — | 8:40 | — | — | 8:39 | — | — | 8:37 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Sun morning. Freeze-thaw conditions (max 12°C on Mon night, min 0°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 17°C on Wed night, min 13°C on Tue afternoon). Wind will be generally light.
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.