– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Mon 11 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Mon 11 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Mon 11 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMild with heavy rain (total 20mm), heaviest during Tue night. Becoming colder with a moderate fall of snow heaviest on Wed afternoon. Freeze-thaw conditions (max 16°C on Tue afternoon, min 0°C on Wed morning). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 2°C on Sun afternoon, min -3°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | Sunday 17 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  | | |  | | | | |  |  | |  |  | |
clear | some clouds | rain shwrs | heavy rain | light snow | light snow | light snow | some clouds | light snow | snow shwrs | light snow | light snow | light snow | some clouds | snow shwrs | some clouds | some clouds | cloudy | cloudy | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | 1 | 3 | 4 | — | 2 | 9 | 2 | 5 | 3 | — | 2 | — | — | — | — | |
— | — | 0.1 | 13 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 14 | 14 | 16 | 13 | 3 | 1 | 1 | 1 | 2 | 0 | -2 | -2 | -2 | -2 | 0 | 0 | -1 | 2 | 1 |
min °C | 11 | 14 | 15 | 5 | 0 | 1 | 0 | 0 | 1 | -1 | -2 | -2 | -3 | -3 | -1 | -1 | -1 | 0 | 0 |
11 | 14 | 15 | 3 | -4 | -4 | -6 | -3 | -1 | -5 | -5 | -6 | -9 | -7 | -4 | -4 | -1 | -2 | -2 | |
3450 | 3650 | 3550 | 2850 | 1600 | 1750 | 1500 | 1700 | 1600 | 1400 | 1250 | 1250 | 1100 | 1200 | 1450 | 1350 | 1400 | 1800 | 1650 | |
Cloud base (m) | 6000 | 5900 | 1650 | 550 | 600 | 600 | 850 | 750 | 600 | 600 | 600 | 600 | 600 | 800 | 1500 | 750 | 950 | 1550 | |
 | — | 5:31 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:24 | — | — | 5:24 | — | — |
 | — | — | — | 8:37 | — | — | 8:38 | — | — | 8:39 | — | — | 8:42 | — | — | 8:43 | — | — | 8:44 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mild with heavy rain (total 20mm), heaviest during Tue night. Becoming colder with a moderate fall of snow heaviest on Wed afternoon. Freeze-thaw conditions (max 16°C on Tue afternoon, min 0°C on Wed morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 2°C on Sun afternoon, min -3°C on Fri night). 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.