– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Thu 29 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Thu 29 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Thu 29 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA moderate fall of snow, heaviest on Thu night. Turning milder with moderate rain (total 11mm), heaviest on Sat morning. Freeze-thaw conditions (max 7°C on Sat night, min 0°C on Sun morning). Mainly strong winds. | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Sun afternoon. Freeze-thaw conditions (max 8°C on Tue afternoon, min -1°C on Sun night). Wind will be generally light. | ||||||||||||||||
Thu 29 | Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | Tuesday 3 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  |  | |  | |  | |  |  | |  | |
light snow | mod. snow | light snow | light snow | rain shwrs | mod. rain | cloudy | cloudy | light snow | mod. snow | mod. snow | snow shwrs | cloudy | light rain | rain shwrs | rain shwrs | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
1 | 6 | 4 | 1 | — | — | — | — | 5 | 8 | 6 | 1 | — | — | — | — | — | |
— | 3 | — | 1.4 | 0.2 | 6 | — | — | — | — | — | — | — | 0.1 | 0.1 | 0.1 | — | |
max °C | 2 | 3 | 1 | 3 | 5 | 4 | 6 | 7 | 0 | 0 | 0 | -1 | 0 | 3 | 6 | 8 | 8 |
min °C | 2 | 1 | 1 | 2 | 3 | 4 | 5 | 4 | 0 | 0 | -1 | -1 | 0 | 0 | 4 | 7 | 7 |
-3 | -5 | -6 | -4 | 0 | 1 | 1 | -1 | -7 | -6 | -7 | -4 | -4 | -4 | 2 | 6 | 4 | |
1900 | 1700 | 1650 | 1850 | 2100 | 2300 | 2150 | 2350 | 1500 | 1450 | 1450 | 1350 | 1450 | 1550 | 2400 | 3000 | 2850 | |
Cloud base (m) | 600 | 600 | 1950 | 600 | 900 | 1700 | 650 | 2950 | 2350 | 600 | 600 | 650 | 650 | 2050 | 700 | 1650 | 5250 |
 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:33 | — | — |
 | 5:00 | — | — | 5:02 | — | — | 5:04 | — | — | 5:06 | — | — | 5:07 | — | — | 5:08 | — |
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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 Thu night. Turning milder with moderate rain (total 11mm), heaviest on Sat morning. Freeze-thaw conditions (max 7°C on Sat night, min 0°C on Sun morning). Mainly strong winds.
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Sun afternoon. Freeze-thaw conditions (max 8°C on Tue afternoon, min -1°C on Sun night). 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.