– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Wed 20 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Wed 20 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 20 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Very mild (max 11°C on Thu afternoon, min 6°C on Sat morning). Wind will be generally light. | Days 5–7 Weather SummaryMild with light rain (total 4mm) on Sun night Becoming colder with a light covering of snow, mostly falling on Sun night. Freeze-thaw conditions (max 7°C on Sat night, min -1°C on Sun night). Winds decreasing (fresh winds from the SSE on Sun night, calm by Mon night). | ||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | | |  | |  |  |  | | | | |  | |
clear | clear | some clouds | clear | clear | rain shwrs | light rain | clear | some clouds | some clouds | some clouds | light rain | light snow | light snow | light snow | some clouds | some clouds | light rain | rain shwrs | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 | — | — | — | — | |
— | — | — | — | — | 0.2 | 0.1 | — | — | — | — | 0.1 | 3 | — | — | — | — | 0.9 | 0.3 | |
max °C | 9 | 9 | 11 | 10 | 8 | 9 | 9 | 7 | 8 | 7 | 4 | 6 | 5 | 0 | 1 | 2 | 2 | 3 | 3 |
min °C | 8 | 9 | 10 | 9 | 8 | 9 | 7 | 6 | 8 | 5 | 4 | 6 | -1 | 0 | 1 | 1 | 1 | 3 | 2 |
8 | 9 | 9 | 8 | 7 | 8 | 6 | 5 | 6 | 2 | 3 | 4 | -8 | -6 | -3 | 1 | 1 | 2 | -1 | |
2950 | 2850 | 2950 | 2750 | 2750 | 3000 | 3100 | 2850 | 2950 | 2650 | 2250 | 2500 | 2150 | 1550 | 1700 | 1900 | 1950 | 2150 | 2050 | |
Cloud base (m) | 5750 | 5900 | 2850 | 2550 | 2000 | 6850 | 1550 | 5600 | 2050 | 2150 | 1950 | 550 | 550 | 550 | 800 | 600 | 1800 | ||
 | — | 5:18 | — | — | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — | 5:15 | — | — | 5:13 | — | — |
 | — | — | — | 8:50 | — | — | 8:51 | — | — | 8:52 | — | — | 8:52 | — | — | 8:53 | — | — | 8:54 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 11°C on Thu afternoon, min 6°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mild with light rain (total 4mm) on Sun night Becoming colder with a light covering of snow, mostly falling on Sun night. Freeze-thaw conditions (max 7°C on Sat night, min -1°C on Sun night). Winds decreasing (fresh winds from the SSE on Sun night, calm by Mon night).
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.