– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Tue 20 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Tue 20 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Freeze-thaw conditions (max 7°C on Tue night, min -2°C on Thu night). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 6°C on Sun night, min -2°C on Fri morning). Wind will be generally light. | |||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  |  | | | | | | | |  | | | | |
clear | clear | clear | clear | clear | some clouds | some clouds | some clouds | clear | clear | clear | clear | clear | clear | cloudy | some clouds | clear | some clouds | |
Cloud base (m) | 8750 | 6200 | 6700 | 1700 | 1750 | 3400 | 2800 | 2800 | 7300 | 8600 | 8050 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 5 | 6 | 7 | 6 | 6 | 5 | 3 | 1 | -1 | -1 | 0 | 2 | 3 | 4 | 4 | 4 | 5 | 6 |
min °C | 4 | 5 | 6 | 6 | 6 | 3 | 2 | 0 | -2 | -2 | 0 | 0 | 2 | 3 | 4 | 4 | 5 | 5 |
chill °C | 3 | 3 | 3 | 3 | 2 | -1 | -1 | -3 | -5 | -7 | -4 | -4 | -2 | -1 | 0 | 1 | 2 | 3 |
Freezing level m | 2950 | 3050 | 3050 | 2950 | 2950 | 2850 | 2600 | 2200 | 1800 | 1600 | 2000 | 2600 | 2800 | 2850 | 3000 | 3150 | 3150 | 3250 |
 | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:41 | — | — | 7:43 | — | — |
 | — | 6:08 | — | — | 6:07 | — | — | 6:05 | — | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Freeze-thaw conditions (max 7°C on Tue night, min -2°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 6°C on Sun night, min -2°C on Fri morning). 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.