– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 16 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 16 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 16 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 4°C on Mon afternoon, min -2°C on Sat afternoon). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 3mm), mostly falling on Tue afternoon. Very mild (max 10°C on Thu afternoon, min 2°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | | |  |  | |  | |  | | | | |
snow shwrs | some clouds | some clouds | rain shwrs | rain shwrs | some clouds | rain shwrs | some clouds | light snow | light rain | rain shwrs | clear | some clouds | clear | clear | clear | clear | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
2 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | |
— | — | — | 0.3 | 0.1 | — | 0.1 | — | — | 3 | 0.3 | — | — | — | — | — | — | |
max °C | -1 | -1 | 0 | 3 | 3 | 2 | 4 | 4 | 2 | 3 | 3 | 5 | 8 | 8 | 8 | 10 | 10 |
min °C | -2 | -2 | -1 | 2 | 3 | 2 | 3 | 2 | 2 | 2 | 2 | 3 | 8 | 8 | 8 | 10 | 8 |
-6 | -4 | -4 | 2 | 2 | 0 | 1 | -1 | -2 | -1 | 2 | 1 | 8 | 8 | 7 | 9 | 8 | |
1350 | 1200 | 1550 | 2050 | 2050 | 1850 | 2100 | 2050 | 1800 | 1950 | 2150 | 2700 | 3050 | 3450 | 3200 | 3050 | 3050 | |
Cloud base (m) | 650 | 650 | 850 | 850 | 1900 | 1850 | 2100 | 600 | 700 | 1900 | 1800 | 2150 | 6450 | 8500 | |||
 | — | — | 5:24 | — | — | 5:22 | — | — | 5:22 | — | — | 5:20 | — | — | 5:18 | — | — |
 | — | 8:43 | — | — | 8:44 | — | — | 8:45 | — | — | 8:46 | — | — | 8:47 | — | — | 8:50 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 4°C on Mon afternoon, min -2°C on Sat afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 3mm), mostly falling on Tue afternoon. Very mild (max 10°C on Thu afternoon, min 2°C on Tue afternoon). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.