– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 pm Tue 29 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Tue 29 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 26mm), heaviest during Tue afternoon. Temperatures will be slightly above freezing (max 4°C on Wed night, min 1°C on Wed morning). Winds decreasing (fresh winds from the WSW on Tue afternoon, calm by Thu morning). | Days 5–7 Weather SummaryMostly dry. Very mild (max 11°C on Sat night, min 5°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||
Tue 29 | Wednesday 30 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  |  | |  | | | | | | | |
heavy rain | rain shwrs | clear | clear | some clouds | cloudy | light rain | light rain | rain shwrs | rain shwrs | clear | clear | clear | clear | clear | clear | clear | |
Cloud base (m) | 550 | 5100 | 9150 | 5550 | 2950 | 1850 | 750 | 650 | 850 | 8600 | 9600 | 9450 | |||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 20 | 0.1 | — | — | — | — | 1.7 | 4 | 1 | 0.2 | — | — | — | — | — | — | — |
max °C | 3 | 2 | 1 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 7 | 8 | 10 | 11 | 11 | 11 | 11 |
min °C | 2 | 2 | 1 | 3 | 3 | 4 | 3 | 4 | 4 | 5 | 6 | 8 | 9 | 11 | 11 | 11 | 9 |
chill °C | -4 | -4 | -3 | 0 | 1 | 4 | 0 | -1 | 0 | 2 | 5 | 8 | 9 | 11 | 11 | 10 | 7 |
Freezing level m | 2600 | 2450 | 2550 | 2800 | 2800 | 2850 | 3150 | 3050 | 2900 | 3100 | 3600 | 3800 | 3900 | 4050 | 4050 | 3950 | 3750 |
 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — | 7:11 | — | — |
 | 6:51 | — | — | 6:49 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:40 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 26mm), heaviest during Tue afternoon. Temperatures will be slightly above freezing (max 4°C on Wed night, min 1°C on Wed morning). Winds decreasing (fresh winds from the WSW on Tue afternoon, calm by Thu morning).
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 11°C on Sat night, min 5°C on Fri 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.