– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Wed 25 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Wed 25 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Wed 25 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -2°C on Thu afternoon, min -5°C on Fri night). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 4°C on Mon night, min -4°C on Sat morning). Wind will be generally light. | |||||||||||||||||
Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 1 | Monday 2 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | |  |  |  | |  | | | | | |  | |
light snow | light snow | light snow | cloudy | cloudy | light snow | cloudy | some clouds | some clouds | clear | some clouds | clear | clear | clear | clear | clear | some clouds | cloudy | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
4 | 2 | 2 | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -4 | -4 | -3 | -3 | -2 | -3 | -4 | -3 | -4 | -3 | -2 | 0 | 0 | 1 | 2 | 3 | 3 | 4 |
min °C | -4 | -4 | -4 | -3 | -2 | -3 | -4 | -4 | -5 | -4 | -2 | -1 | 0 | 0 | 1 | 2 | 3 | 3 |
-10 | -10 | -10 | -9 | -8 | -8 | -10 | -9 | -5 | -6 | -2 | -3 | -2 | 0 | 0 | -2 | 1 | 1 | |
850 | 950 | 900 | 1050 | 1150 | 1050 | 1000 | 1000 | 650 | 900 | 1200 | 1200 | 1600 | 1600 | 1950 | 2050 | 2200 | 2200 | |
Cloud base (m) | 600 | 600 | 600 | 600 | 700 | 600 | 650 | 600 | 600 | 600 | 750 | 600 | 600 | 900 | 9250 | 6900 | 6250 | |
 | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — |
 | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A moderate fall of snow, heaviest on Wed morning. Temperatures will be below freezing (max -2°C on Thu afternoon, min -5°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 4°C on Mon night, min -4°C on Sat morning). 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.