– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Wed 28 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Wed 28 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Wed 28 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 Wed night. Freeze-thaw conditions (max 2°C on Fri night, min -3°C on Wed afternoon). Winds decreasing (near gales from the S on Fri morning, light winds from the SW by Fri night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 2°C on Sat afternoon, min -5°C on Sun night). Winds decreasing (strong winds from the S on Sat night, calm by Tue morning). | ||||||||||||||||
Wed 28 | Thursday 29 | Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  | |  | | |  |  | |  | | |  | |
light snow | heavy snow | light snow | cloudy | mod. snow | mod. snow | light snow | cloudy | cloudy | cloudy | light snow | heavy snow | mod. snow | snow shwrs | cloudy | light snow | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
3 | 13 | 2 | — | 7 | 7 | 3 | — | — | — | 2 | 15 | 6 | 19 | — | 1 | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -3 | -2 | -2 | -1 | -1 | -2 | -2 | 2 | 1 | 2 | 1 | -3 | -4 | -5 | -4 | -5 | -1 |
min °C | -3 | -3 | -3 | -2 | -2 | -3 | -2 | -1 | 1 | 2 | -3 | -4 | -4 | -5 | -5 | -5 | -4 |
-11 | -11 | -10 | -8 | -11 | -13 | -9 | -5 | -5 | -4 | -12 | -11 | -11 | -12 | -11 | -11 | -7 | |
1500 | 1650 | 1600 | 1800 | 1850 | 1650 | 1800 | 2050 | 2350 | 2350 | 2200 | 1600 | 1500 | 1250 | 1450 | 1300 | 1400 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 600 | 1650 | 600 | 700 | 2050 | 900 | 3150 | 600 | 600 | 600 | 750 | 650 | 850 |
 | — | — | 7:41 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — |
 | 4:59 | — | — | 5:00 | — | — | 5:02 | — | — | 5:04 | — | — | 5:06 | — | — | 5:07 | — |
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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 Wed night. Freeze-thaw conditions (max 2°C on Fri night, min -3°C on Wed afternoon). Winds decreasing (near gales from the S on Fri morning, light winds from the SW by Fri night).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 2°C on Sat afternoon, min -5°C on Sun night). Winds decreasing (strong winds from the S on Sat night, calm by Tue morning).
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.