– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Mon 17 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Mon 17 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Mon 17 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 2°C on Wed afternoon, min -6°C on Mon night). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 2°C on Thu afternoon, min 0°C on Fri morning). Wind will be generally light. | |||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | |  |  | | | | | | | | | |
light snow | mod. snow | light snow | light snow | some clouds | clear | some clouds | some clouds | some clouds | clear | clear | clear | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
4 | 10 | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -2 | -4 | -6 | -5 | -4 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 0 | 0 | 1 | 1 | 1 | 1 |
min°C | -3 | -5 | -6 | -5 | -4 | -3 | 1 | 2 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 |
-9 | -10 | -10 | -8 | -8 | -8 | -3 | -2 | -4 | -2 | -2 | -4 | -5 | -5 | -4 | -3 | -4 | -5 | |
1550 | 1250 | 950 | 1000 | 1050 | 1300 | 2500 | 2550 | 2200 | 2250 | 2350 | 2550 | 2250 | 2200 | 2500 | 2550 | 2350 | 2200 | |
Cloud base (m) | 550 | 550 | 600 | 600 | 600 | 650 | 6550 | 600 | 8400 | 2600 | 2300 | 2700 | 1950 | 5150 | 2500 | 2900 | ||
 | 7:18 | — | — | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — | 7:26 | — | — |
 | — | 4:24 | — | — | 4:23 | — | — | 4:22 | — | — | 4:22 | — | — | 4:21 | — | — | 4:20 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Mon afternoon. Freeze-thaw conditions (max 2°C on Wed afternoon, min -6°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 2°C on Thu afternoon, min 0°C on Fri morning). Wind will be generally light.
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.