– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 am Tue 13 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Tue 13 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 8mm), mostly falling on Tue night. Very mild (max 11°C on Thu night, min 2°C on Tue morning). Wind will be generally light. | Days 4–6 Weather SummaryModerate rain (total 10mm), heaviest on Fri night giving way to a moderate fall of snow, heaviest on Sat morning. Freeze-thaw conditions (max 11°C on Fri morning, min -3°C on Sat morning). Winds decreasing (near gales from the WSW on Sat morning, calm by Sat night). | |||||||||||||||||
Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  | | | | |  |  |  |  | | |  | |
some clouds | cloudy | mod. rain | light rain | rain shwrs | clear | clear | clear | clear | clear | some clouds | rain shwrs | mod. snow | snow shwrs | some clouds | some clouds | cloudy | light snow | |
Cloud base (m) | 2350 | 1950 | 600 | 600 | 800 | 8950 | 8200 | 9450 | 9150 | 750 | 600 | 700 | 5850 | 650 | ||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | 10 | 3 | — | — | — | 3 |
mm | — | — | 6 | 2 | 0.1 | — | — | — | — | — | — | 10 | — | — | — | — | — | — |
max °C | 2 | 2 | 3 | 4 | 5 | 8 | 9 | 10 | 11 | 11 | 10 | 7 | 1 | -3 | -2 | 1 | 0 | -2 |
min °C | 2 | 2 | 2 | 3 | 5 | 5 | 9 | 9 | 10 | 10 | 9 | 3 | -3 | -3 | -3 | -1 | 0 | -3 |
chill °C | -3 | -2 | -3 | 1 | 2 | 4 | 7 | 6 | 8 | 6 | 5 | -3 | -12 | -11 | -8 | -4 | -6 | -10 |
Freezing level m | 2750 | 2750 | 2850 | 3250 | 3600 | 3800 | 3750 | 3650 | 3750 | 3700 | 3500 | 2950 | 1700 | 1650 | 1650 | 2250 | 2150 | 1400 |
 | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — |
 | — | 6:22 | — | — | 6:21 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 8mm), mostly falling on Tue night. Very mild (max 11°C on Thu night, min 2°C on Tue morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 10mm), heaviest on Fri night giving way to a moderate fall of snow, heaviest on Sat morning. Freeze-thaw conditions (max 11°C on Fri morning, min -3°C on Sat morning). Winds decreasing (near gales from the WSW on Sat morning, calm by Sat night).
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.