– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Sat 13 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Sat 13 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Sat 13 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMild with heavy rain (total 51mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Mon afternoon. Freeze-thaw conditions (max 8°C on Sat afternoon, min -4°C on Mon night). Mainly near gales. | Days 4–6 Weather SummaryLight rain (total 3mm) on Tue afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -6°C on Tue night). Winds decreasing (gales from the SSW on Tue afternoon, light winds from the WSW by Thu night). | |||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  |  |  | | |  |  | | | | | | |
some clouds | cloudy | light rain | light rain | light rain | heavy rain | mod. rain | light snow | mod. snow | light snow | light snow | heavy snow | mod. snow | light snow | mod. snow | light snow | mod. snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | 4 | 8 | 4 | 1 | 23 | 7 | 4 | 9 | 2 | 9 | 20 | |
— | — | 0.9 | 1 | 0.9 | 31 | 10 | 8 | — | — | 3 | — | — | — | — | — | — | — | |
max°C | 7 | 8 | 7 | 3 | 3 | 5 | 5 | 5 | -2 | 0 | 2 | 1 | -4 | -4 | -2 | -2 | -3 | -5 |
min°C | 6 | 8 | 2 | 3 | 3 | 4 | 5 | -1 | -4 | -1 | 1 | -6 | -5 | -4 | -3 | -2 | -5 | -6 |
2 | 4 | -4 | -3 | -3 | -2 | 0 | -8 | -11 | -8 | -7 | -17 | -15 | -11 | -11 | -11 | -14 | -16 | |
2750 | 2800 | 2150 | 2000 | 2150 | 2600 | 2500 | 2300 | 1000 | 1250 | 1650 | 900 | 750 | 850 | 1100 | 1100 | 900 | 700 | |
Cloud base (m) | 650 | 6700 | 2250 | 650 | 850 | 550 | 550 | 550 | 600 | 550 | 500 | 500 | 600 | 550 | 550 | 500 | 500 | 550 |
 | 7:52 | — | — | 7:52 | — | — | 7:54 | — | — | 7:54 | — | — | 7:54 | — | — | 7:56 | — | — |
 | — | 4:10 | — | — | 4:10 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mild with heavy rain (total 51mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Mon afternoon. Freeze-thaw conditions (max 8°C on Sat afternoon, min -4°C on Mon night). Mainly near gales.
South Twin Sister Weather (Days 3-6):
Light rain (total 3mm) on Tue afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -6°C on Tue night). Winds decreasing (gales from the SSW on Tue afternoon, light winds from the WSW by Thu night).
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.