– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Thu 29 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Thu 29 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Thu 29 Jan 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 Thu morning. Freeze-thaw conditions (max 1°C on Fri night, min -3°C on Thu morning). Mainly strong winds. | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 6°C on Tue night, min -6°C on Sun night). Winds decreasing (near gales from the S on Sun morning, calm by Tue morning). | |||||||||||||||||
Thursday 29 | Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | Tuesday 3 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | |  |  |  |  | | | |  |  |  | |
light snow | cloudy | mod. snow | light snow | snow shwrs | some clouds | light snow | light snow | cloudy | mod. snow | heavy snow | snow shwrs | cloudy | light snow | some clouds | some clouds | clear | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
5 | — | 7 | 5 | 2 | — | 2 | 1 | — | 10 | 16 | 2 | — | 2 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -1 | -1 | -2 | -1 | 1 | 1 | 1 | 1 | -3 | -4 | -5 | -5 | -3 | 0 | 2 | 4 | 6 |
min °C | -3 | -2 | -1 | -2 | -2 | -1 | 1 | 1 | -2 | -3 | -4 | -6 | -5 | -4 | -2 | 0 | 3 | 5 |
-10 | -8 | -8 | -11 | -9 | -5 | -5 | -5 | -11 | -13 | -11 | -12 | -11 | -10 | -7 | 0 | 3 | 3 | |
1600 | 1800 | 1750 | 1600 | 1800 | 2100 | 2250 | 2300 | 2250 | 1500 | 1400 | 1300 | 1300 | 1300 | 1850 | 2200 | 2850 | 3200 | |
Cloud base (m) | 600 | 600 | 600 | 2000 | 600 | 800 | 1700 | 600 | 2800 | 900 | 600 | 650 | 750 | 600 | 650 | 1000 | 1650 | 9300 |
 | 7:41 | — | — | 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 heavy fall of snow, heaviest during Thu morning. Freeze-thaw conditions (max 1°C on Fri night, min -3°C on Thu morning). Mainly strong winds.
South Twin Sister Weather (Days 3-6):
A heavy fall of snow, heaviest during Sun afternoon. Freeze-thaw conditions (max 6°C on Tue night, min -6°C on Sun night). Winds decreasing (near gales from the S on Sun morning, calm by Tue 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
SHIP3484 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.