– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Tue 16 Sep Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Tue 16 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Tue 16 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Very mild (max 15°C on Tue afternoon, min 6°C on Thu morning). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 10mm), mostly falling on Sat night. Mild temperatures (max 9°C on Fri afternoon, min 3°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the WSW by Sat night). | |||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | | | | | | | | |  |  |  |  | | | |
clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | light rain | mod. rain | rain shwrs | rain shwrs | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 | 1.9 | 0.2 | — | |
max°C | 13 | 15 | 15 | 12 | 10 | 9 | 6 | 7 | 7 | 8 | 9 | 9 | 6 | 5 | 5 | 3 | 4 | 5 |
min°C | 12 | 14 | 13 | 10 | 9 | 7 | 6 | 7 | 7 | 8 | 9 | 7 | 5 | 5 | 3 | 3 | 3 | 4 |
10 | 13 | 11 | 7 | 6 | 5 | 4 | 6 | 7 | 7 | 8 | 4 | 1 | 1 | -2 | -2 | -2 | 0 | |
4350 | 4400 | 4200 | 3900 | 3850 | 3650 | 3450 | 3500 | 3550 | 3900 | 3950 | 3800 | 3250 | 3250 | 2900 | 2600 | 2900 | 3300 | |
Cloud base (m) | 9600 | 8650 | 8500 | 1850 | 8600 | 9250 | 9150 | 2700 | 900 | 600 | 650 | 1800 | ||||||
 | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — |
 | — | 7:19 | — | — | 7:16 | — | — | 7:14 | — | — | 7:12 | — | — | 7:09 | — | — | 7:07 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 15°C on Tue afternoon, min 6°C on Thu morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 10mm), mostly falling on Sat night. Mild temperatures (max 9°C on Fri afternoon, min 3°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the WSW by Sat night).
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.