– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Sat 24 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sat 24 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sat 24 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Temperatures will be below freezing (max 0°C on Tue morning, min -5°C on Mon morning). Wind will be generally light. | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 1°C on Tue afternoon, min -5°C on Tue night). Mainly gales. | ||||||||||||||||
Sat 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  | | | |  |  |  |  | | |  | |
clear | clear | clear | clear | some clouds | cloudy | some clouds | some clouds | cloudy | cloudy | light snow | light snow | mod. snow | heavy snow | mod. snow | mod. snow | mod. snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | 5 | 5 | 8 | 16 | 6 | 8 | 9 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -2 | -2 | -2 | -3 | -5 | -5 | -2 | 0 | 1 | -4 | -3 | -3 | -2 | -1 | 0 | -1 |
min °C | -2 | -2 | -2 | -3 | -4 | -5 | -5 | -4 | 0 | -1 | -5 | -4 | -3 | -3 | -1 | 0 | -2 |
-7 | -6 | -6 | -8 | -9 | -11 | -10 | -9 | -5 | -8 | -14 | -14 | -12 | -10 | -8 | -7 | -11 | |
1650 | 1500 | 1600 | 1600 | 1500 | 1350 | 1150 | 1350 | 2050 | 2200 | 1400 | 1450 | 1450 | 1600 | 1800 | 2000 | 1850 | |
Cloud base (m) | 6300 | 2750 | 2350 | 950 | 2000 | 2750 | 600 | 600 | 600 | 600 | 600 | 550 | 700 | ||||
 | — | — | 7:46 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — | 7:41 | — | — |
 | 4:52 | — | — | 4:54 | — | — | 4:55 | — | — | 4:58 | — | — | 4:59 | — | — | 5:00 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Temperatures will be below freezing (max 0°C on Tue morning, min -5°C on Mon morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 1°C on Tue afternoon, min -5°C on Tue night). Mainly gales.
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.