– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Mon 25 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Mon 25 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Mon 25 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of snow turning to light rain (total 8mm) on Mon afternoon. Very mild (max 12°C on Wed night, min 1°C on Mon night). Winds decreasing (strong winds from the SSE on Mon morning, calm by Wed night). | Days 4–6 Weather SummaryLight rain (total 6mm) at first, then becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 14°C on Thu afternoon, min -2°C on Sat morning). Wind will be generally light. | |||||||||||||||||
Monday 25 | Tuesday 26 | Wednesday 27 | Thursday 28 | Friday 29 | Saturday 30 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  | |  | | |  | | |  | |  | | |
light snow | mod. rain | light rain | cloudy | light rain | rain shwrs | clear | clear | clear | clear | clear | some clouds | light rain | light rain | light snow | cloudy | some clouds | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | |
0.1 | 6 | 1.2 | — | 0.3 | 0.1 | — | — | — | — | — | — | 0.5 | 1.8 | 3 | — | — | — | |
max °C | 4 | 3 | 2 | 1 | 3 | 5 | 8 | 11 | 12 | 12 | 14 | 14 | 8 | 4 | 3 | -1 | 2 | 1 |
min °C | 2 | 2 | 1 | 1 | 2 | 4 | 5 | 11 | 11 | 12 | 14 | 10 | 5 | 3 | -1 | -2 | 0 | 0 |
-5 | -4 | 0 | -1 | 2 | 3 | 3 | 11 | 11 | 12 | 14 | 9 | 3 | -1 | -4 | -5 | -2 | -3 | |
1850 | 1900 | 1700 | 1850 | 2500 | 3750 | 3950 | 3900 | 3850 | 3700 | 3800 | 3750 | 3150 | 2300 | 1750 | 1300 | 1750 | 1600 | |
Cloud base (m) | 2000 | 550 | 1550 | 550 | 700 | 6150 | 1700 | 1900 | 9500 | 750 | 600 | 600 | 600 | 900 | 2050 | |||
 | 5:15 | — | — | 5:13 | — | — | 5:13 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — |
 | — | — | 8:53 | — | — | 8:54 | — | — | 8:57 | — | — | 8:58 | — | — | 8:59 | — | — | 9:00 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of snow turning to light rain (total 8mm) on Mon afternoon. Very mild (max 12°C on Wed night, min 1°C on Mon night). Winds decreasing (strong winds from the SSE on Mon morning, calm by Wed night).
South Twin Sister Weather (Days 3-6):
Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 14°C on Thu afternoon, min -2°C on Sat morning). 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.