– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sun 06 Sep Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sun 06 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sun 06 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummarySome drizzle, heaviest during Mon afternoon. Very mild (max 11°C on Tue night, min 2°C on Mon morning). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Freeze-thaw conditions (max 11°C on Wed afternoon, min -1°C on Fri afternoon). Mainly fresh winds. | ||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  |  |  | | |  | | | | | | | |
rain shwrs | rain shwrs | light rain | rain shwrs | rain shwrs | some clouds | clear | clear | clear | clear | some clouds | clear | clear | clear | clear | some clouds | some clouds | |
Cloud base (m) | 2500 | 5150 | 2100 | 900 | 8950 | 9350 | 8950 | 1800 | 600 | 800 | 900 | ||||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | 0.2 | 0.3 | 0.6 | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 6 | 5 | 2 | 3 | 5 | 6 | 9 | 11 | 11 | 11 | 11 | 6 | 6 | 6 | 2 | 0 | 0 |
min °C | 5 | 3 | 2 | 3 | 4 | 5 | 8 | 10 | 11 | 11 | 7 | 5 | 6 | 3 | 0 | -1 | -1 |
chill °C | 5 | 0 | -1 | 2 | 2 | 5 | 8 | 10 | 10 | 9 | 3 | 2 | 3 | 0 | -5 | -5 | -4 |
Freezing level m | 2850 | 2700 | 2550 | 2850 | 3350 | 3350 | 3600 | 4050 | 4250 | 4100 | 3700 | 3250 | 3200 | 2900 | 2100 | 2100 | 2050 |
 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — |
 | 7:39 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:30 | — | — | 7:29 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Mon afternoon. Very mild (max 11°C on Tue night, min 2°C on Mon morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 11°C on Wed afternoon, min -1°C on Fri afternoon). Mainly fresh winds.
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.