– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 am Sat 12 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Sat 12 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Mild temperatures (max 7°C on Sat afternoon, min 2°C on Sat night). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Very mild (max 15°C on Thu night, min 3°C on Tue morning). Wind will be generally light. | |||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  | | | | |  | |  | | | | | | | |
some clouds | some clouds | rain shwrs | light rain | rain shwrs | rain shwrs | rain shwrs | rain shwrs | rain shwrs | clear | clear | clear | clear | clear | clear | clear | clear | clear | |
Cloud base (m) | 4050 | 3000 | 700 | 700 | 950 | 800 | 850 | 2200 | 2100 | 9100 | 9200 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 0.5 | 0.4 | 0.9 | 0.6 | 0.1 | 0.6 | 0.2 | — | — | — | — | — | — | — | — | — |
max °C | 6 | 7 | 7 | 2 | 3 | 3 | 2 | 3 | 4 | 4 | 7 | 9 | 8 | 11 | 12 | 13 | 14 | 15 |
min °C | 6 | 7 | 2 | 2 | 3 | 2 | 2 | 3 | 3 | 3 | 6 | 8 | 8 | 10 | 11 | 13 | 14 | 14 |
chill °C | 4 | 5 | -2 | -2 | 1 | -2 | 0 | 0 | 1 | 0 | 4 | 7 | 7 | 10 | 11 | 13 | 14 | 14 |
Freezing level m | 3000 | 3100 | 2850 | 2550 | 2700 | 2750 | 3050 | 2800 | 3100 | 2950 | 3350 | 3700 | 3800 | 4100 | 4250 | 4350 | 4500 | 4500 |
 | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — |
 | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:16 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 3mm), mostly falling on Sat night. Mild temperatures (max 7°C on Sat afternoon, min 2°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 15°C on Thu night, min 3°C on Tue 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.