– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Mon 26 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Mon 26 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Mon 26 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -5°C on Tue night). Winds increasing (light winds from the SSW on Mon night, fresh winds from the SSW by Wed night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -2°C on Thu afternoon). Winds decreasing (near gales from the SSW on Fri morning, light winds from the WSW by Fri night). | ||||||||||||||||
Mon 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  |  | |  | | | | |  | | |
some clouds | some clouds | cloudy | cloudy | light snow | light snow | light snow | heavy snow | mod. snow | light snow | mod. snow | light snow | mod. snow | some clouds | cloudy | light rain | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | 5 | 4 | 2 | 11 | 6 | 1 | 6 | 4 | 9 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | — | |
max °C | -4 | -1 | 1 | 2 | -2 | -5 | -3 | -3 | -2 | -1 | 0 | -2 | -2 | 1 | 3 | 3 | 3 |
min °C | -4 | -4 | 0 | 1 | -5 | -5 | -4 | -3 | -2 | -2 | -1 | -2 | -2 | -1 | 2 | 3 | 2 |
-11 | -9 | -5 | -4 | -12 | -12 | -12 | -11 | -8 | -8 | -7 | -11 | -10 | -6 | -2 | -2 | -3 | |
1450 | 1600 | 2050 | 2350 | 1350 | 1250 | 1400 | 1550 | 1500 | 1800 | 2000 | 1850 | 1700 | 1850 | 2700 | 2650 | 2500 | |
Cloud base (m) | 2800 | 2150 | 4900 | 5150 | 2600 | 600 | 650 | 600 | 600 | 600 | 600 | 1600 | 600 | 650 | 600 | 2600 | 5600 |
 | — | — | 7:43 | — | — | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:37 | — | — |
 | 4:55 | — | — | 4:58 | — | — | 4:59 | — | — | 5:00 | — | — | 5:02 | — | — | 5:04 | — |
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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 Tue night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -5°C on Tue night). Winds increasing (light winds from the SSW on Mon night, fresh winds from the SSW by Wed night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -2°C on Thu afternoon). Winds decreasing (near gales from the SSW on Fri morning, light winds from the WSW by Fri night).
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.