– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 14 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 14 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 14 Mar 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 Sun night. Freeze-thaw conditions (max 1°C on Mon morning, min -13°C on Sat afternoon). Winds increasing (light winds from the W on Sun morning, near gales from the SW by Mon afternoon). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Becoming milder with heavy rain (total 35mm) on Thu night. Freeze-thaw conditions (max 3°C on Thu afternoon, min 0°C on Wed morning). Winds increasing (moderate winds from the SW on Tue afternoon, near gales from the SSW by Fri morning). | ||||||||||||||||
Sat 14 | Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  | | |  | | | | |  | | |
snow shwrs | some clouds | cloudy | cloudy | heavy snow | light snow | light snow | light snow | light snow | light snow | mod. snow | light snow | light snow | light snow | light snow | mod. rain | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
1 | — | — | — | 11 | 5 | 3 | 2 | 2 | 3 | 10 | 5 | 4 | 3 | 2 | — | 4 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 8 | 12 | |
max °C | -13 | -9 | -7 | -6 | 0 | 1 | 1 | 0 | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 3 | 3 |
min °C | -13 | -12 | -8 | -6 | -4 | 0 | 0 | -1 | 1 | 2 | 1 | 0 | 0 | 1 | 2 | 2 | 2 |
-22 | -20 | -13 | -12 | -12 | -7 | -8 | -9 | -6 | -4 | -5 | -7 | -7 | -6 | -4 | -4 | -5 | |
550 | 0 | 850 | 800 | 1500 | 2500 | 2200 | 2350 | 2350 | 2400 | 2450 | 2350 | 2300 | 2500 | 2600 | 2700 | 2650 | |
Cloud base (m) | 650 | 800 | 2250 | 1950 | 600 | 600 | 600 | 1550 | 600 | 550 | 550 | 600 | 600 | 600 | 600 | 600 | 550 |
 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — |
 | 7:10 | — | — | 7:12 | — | — | 7:14 | — | — | 7:15 | — | — | 7:16 | — | — | 7:17 | — |
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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 Sun night. Freeze-thaw conditions (max 1°C on Mon morning, min -13°C on Sat afternoon). Winds increasing (light winds from the W on Sun morning, near gales from the SW by Mon afternoon).
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Becoming milder with heavy rain (total 35mm) on Thu night. Freeze-thaw conditions (max 3°C on Thu afternoon, min 0°C on Wed morning). Winds increasing (moderate winds from the SW on Tue afternoon, near gales from the SSW by Fri 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.