– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sat 07 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sat 07 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Sat 07 Feb 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 Sat night. Temperatures will be below freezing (max -1°C on Sat morning, min -8°C on Sun night). Winds decreasing (strong winds from the SSW on Sat morning, light winds from the NW by Sun morning). | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Thu night. Temperatures will be below freezing (max -5°C on Tue afternoon, min -7°C on Tue morning). Winds increasing (light winds from the SSW on Tue morning, strong winds from the SSW by Thu night). | |||||||||||||||||
Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | | |  | | | | |  |  | |  | |
mod. snow | heavy snow | snow shwrs | some clouds | some clouds | some clouds | cloudy | some clouds | some clouds | clear | clear | some clouds | some clouds | some clouds | cloudy | light snow | light snow | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
8 | 15 | 11 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 11 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -1 | -2 | -4 | -5 | -5 | -6 | -8 | -7 | -7 | -6 | -5 | -6 | -7 | -6 | -6 | -6 | -5 | -5 |
min °C | -1 | -2 | -6 | -5 | -6 | -8 | -8 | -8 | -7 | -7 | -6 | -7 | -7 | -7 | -7 | -6 | -6 | -7 |
-10 | -9 | -15 | -9 | -11 | -14 | -14 | -12 | -11 | -10 | -9 | -13 | -13 | -13 | -14 | -13 | -14 | -17 | |
1800 | 1750 | 1300 | 1300 | 1350 | 900 | 1000 | 1100 | 850 | 1200 | 1350 | 1200 | 1100 | 1200 | 1050 | 1150 | 1150 | 1150 | |
Cloud base (m) | 750 | 550 | 900 | 6550 | 700 | 1700 | 650 | 750 | 1750 | 2200 | 2600 | 950 | 900 | 650 | 700 | 600 | 550 | |
 | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — |
 | — | 5:15 | — | — | 5:16 | — | — | 5:19 | — | — | 5:21 | — | — | 5:22 | — | — | 5:23 | — |
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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 Sat night. Temperatures will be below freezing (max -1°C on Sat morning, min -8°C on Sun night). Winds decreasing (strong winds from the SSW on Sat morning, light winds from the NW by Sun morning).
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Thu night. Temperatures will be below freezing (max -5°C on Tue afternoon, min -7°C on Tue morning). Winds increasing (light winds from the SSW on Tue morning, strong winds from the SSW by Thu 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.