– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sun 10 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sun 10 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sun 10 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 12°C on Tue afternoon, min 0°C on Sun night). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 3°C on Wed night, min -7°C on Fri night). Winds decreasing (strong winds from the W on Fri night, light winds from the W by Sat afternoon). | ||||||||||||||||||
Monday 11 | Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  |  | | | | | |  |  |  |  | | | | |
snow shwrs | clear | clear | clear | some clouds | rain shwrs | some clouds | rain shwrs | rain shwrs | some clouds | some clouds | some clouds | light snow | light snow | heavy snow | mod. snow | snow shwrs | snow shwrs | clear | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
1 | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 17 | 10 | 3 | 2 | — | |
— | — | — | — | — | 0.2 | — | 0.3 | 0.3 | — | — | — | — | — | — | — | — | — | — | |
max °C | 0 | 3 | 6 | 10 | 11 | 12 | 11 | 6 | 5 | 3 | -1 | 0 | 0 | -3 | -4 | -7 | -7 | -4 | -3 |
min °C | 0 | 1 | 6 | 7 | 11 | 12 | 8 | 5 | 4 | -1 | -2 | 0 | -3 | -3 | -6 | -7 | -7 | -6 | -3 |
-5 | -1 | 5 | 6 | 9 | 10 | 6 | 2 | 0 | -7 | -8 | -5 | -10 | -9 | -15 | -16 | -15 | -10 | -7 | |
2200 | 2850 | 3200 | 3550 | 3750 | 3650 | 3500 | 3050 | 2850 | 2150 | 1850 | 2200 | 1600 | 1450 | 1250 | 1000 | 1150 | 1600 | 1450 | |
Cloud base (m) | 1900 | 2050 | 6950 | 9200 | 5850 | 8600 | 6500 | 3200 | 3850 | 1850 | 700 | 1950 | 1800 | 650 | 600 | 600 | 600 | 850 | 8950 |
 | — | 5:31 | — | — | 5:31 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:24 | — | — |
 | — | — | — | 8:36 | — | — | 8:37 | — | — | 8:38 | — | — | 8:39 | — | — | 8:42 | — | — | 8:43 |
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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 12°C on Tue afternoon, min 0°C on Sun night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 3°C on Wed night, min -7°C on Fri night). Winds decreasing (strong winds from the W on Fri night, light winds from the W by Sat afternoon).
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.