– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Fri 21 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Fri 21 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Fri 21 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 7mm), mostly falling on Sat night. Very mild (max 18°C on Fri afternoon, min 4°C on Sat night). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Very mild (max 15°C on Tue afternoon, min 3°C on Wed night). Wind will be generally light. | |||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | | | | |  | | | |  | | | |
clear | cloudy | rain shwrs | rain shwrs | rain shwrs | light rain | light rain | rain shwrs | rain shwrs | clear | clear | clear | clear | clear | clear | some clouds | cloudy | light rain | |
Cloud base (m) | 4950 | 4600 | 600 | 550 | 700 | 650 | 650 | 9450 | 4350 | 6550 | 700 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 0.1 | 1 | 1.7 | 2 | 1.7 | 0.2 | 0.1 | — | — | — | — | — | — | — | — | 2 |
max °C | 17 | 18 | 17 | 12 | 9 | 7 | 4 | 6 | 8 | 9 | 12 | 13 | 13 | 15 | 15 | 10 | 8 | 5 |
min °C | 17 | 18 | 14 | 10 | 8 | 4 | 4 | 5 | 7 | 9 | 11 | 13 | 13 | 14 | 11 | 9 | 7 | 3 |
chill °C | 17 | 18 | 13 | 8 | 5 | 0 | 1 | 2 | 4 | 9 | 11 | 13 | 12 | 13 | 9 | 6 | 4 | -2 |
Freezing level m | 4600 | 4600 | 4350 | 4150 | 3850 | 3150 | 3100 | 3450 | 3900 | 3950 | 4000 | 4050 | 4050 | 4150 | 4050 | 3650 | 3250 | 2650 |
 | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — |
 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:01 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 7mm), mostly falling on Sat night. Very mild (max 18°C on Fri afternoon, min 4°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 2mm), mostly falling on Wed night. Very mild (max 15°C on Tue afternoon, min 3°C on Wed night). 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.