– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 pm Mon 28 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Mon 28 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 43mm), heaviest during Tue morning. Freeze-thaw conditions (max 3°C on Mon afternoon, min 0°C on Wed morning). Winds decreasing (strong winds from the SW on Mon night, calm by Wed night). | Days 5–7 Weather SummaryLight rain (total 4mm), mostly falling on Fri morning. Very mild (max 11°C on Sat night, min 2°C on Fri morning). Wind will be generally light. | ||||||||||||||||
Mon 28 | Tuesday 29 | Wednesday 30 | Thursday 1 | Friday 2 | Saturday 3 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  |  | | |  |  | | | | | | |
cloudy | heavy rain | heavy rain | mod. rain | clear | clear | some clouds | some clouds | some clouds | cloudy | light rain | rain shwrs | rain shwrs | clear | clear | clear | clear | |
Cloud base (m) | 2350 | 700 | 550 | 550 | 5850 | 800 | 900 | 3150 | 2900 | 2500 | 700 | 650 | 800 | 8850 | 9600 | 9600 | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 14 | 21 | 8 | — | — | — | — | — | — | 2 | 2 | 0.5 | — | — | — | — |
max °C | 3 | 3 | 3 | 3 | 2 | 1 | 2 | 3 | 3 | 4 | 4 | 2 | 3 | 6 | 7 | 9 | 11 |
min °C | 2 | 3 | 3 | 2 | 1 | 0 | 2 | 1 | 2 | 3 | 3 | 2 | 3 | 4 | 7 | 9 | 10 |
chill °C | -3 | -3 | -2 | -4 | -4 | -5 | -2 | 0 | 2 | 0 | -1 | -1 | 0 | 2 | 7 | 9 | 10 |
Freezing level m | 2550 | 3100 | 2750 | 2600 | 2350 | 2250 | 2650 | 2250 | 2650 | 2900 | 2750 | 2600 | 2900 | 3500 | 3700 | 3950 | 4000 |
 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — |
 | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 43mm), heaviest during Tue morning. Freeze-thaw conditions (max 3°C on Mon afternoon, min 0°C on Wed morning). Winds decreasing (strong winds from the SW on Mon night, calm by Wed night).
South Twin Sister Weather (Days 3-6):
Light rain (total 4mm), mostly falling on Fri morning. Very mild (max 11°C on Sat 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.