– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Sat 15 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Sat 15 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Sat 15 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMild with moderate rain (total 15mm) on Sun afternoon, Becoming colder with a light covering of snow, mostly falling on Mon morning. Freeze-thaw conditions (max 7°C on Sat night, min -4°C on Mon night). Wind will be generally light. | Days 4–6 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 6°C on Wed night, min -4°C on Tue afternoon). Wind will be generally light. | |||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  |  |  | |  | |  |  | | |  | |  | | |
light rain | light rain | rain shwrs | light rain | mod. rain | light rain | light snow | light snow | light snow | light snow | some clouds | clear | some clouds | some clouds | some clouds | some clouds | clear | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | 3 | 3 | 3 | 3 | — | — | — | — | — | — | — | — | |
1.2 | 1.8 | 0.2 | 0.8 | 8 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 4 | 5 | 7 | 7 | 5 | 4 | 1 | -2 | -3 | -3 | -3 | 0 | 3 | 5 | 6 | 5 | 4 | 4 |
min°C | 4 | 4 | 5 | 5 | 4 | 2 | -1 | -2 | -4 | -3 | -4 | -4 | 2 | 5 | 5 | 4 | 4 | 3 |
1 | 2 | 2 | 2 | 0 | -2 | -5 | -6 | -8 | -7 | -7 | -4 | 0 | 3 | 3 | 3 | 4 | 3 | |
2300 | 2300 | 2500 | 2500 | 2450 | 2100 | 1650 | 1200 | 900 | 950 | 1000 | 750 | 2000 | 2550 | 2700 | 2350 | 2250 | 2200 | |
Cloud base (m) | 600 | 600 | 1750 | 2200 | 750 | 550 | 550 | 550 | 600 | 600 | 600 | 600 | 600 | 6050 | 550 | 6400 | 7950 | 9350 |
 | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — |
 | — | 4:27 | — | — | 4:25 | — | — | 4:24 | — | — | 4:23 | — | — | 4:22 | — | — | 4:22 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mild with moderate rain (total 15mm) on Sun afternoon, Becoming colder with a light covering of snow, mostly falling on Mon morning. Freeze-thaw conditions (max 7°C on Sat night, min -4°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 6°C on Wed night, min -4°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.