– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Mon 16 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Mon 16 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Mon 16 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 3mm) on Wed afternoon. Becoming colder with heavy fall of snow, heaviest during Wed night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -1°C on Mon night). Mainly near gales. | Days 4–6 Weather SummaryModerate rain (total 11mm) on Thu night. Becoming colder with heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 2°C on Thu night, min -9°C on Sat morning). Winds decreasing (near gales from the SW on Thu night, light winds from the WSW by Sat night). | |||||||||||||||||
Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  | | |  | | | |  |  |  |  | |  | |
light snow | light snow | light snow | light snow | light snow | mod. snow | light snow | light snow | heavy snow | light snow | light snow | light snow | mod. snow | snow shwrs | some clouds | clear | clear | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
5 | 1 | 2 | 2 | 1 | 6 | 5 | 1 | 11 | 2 | 4 | 3 | 8 | 3 | — | — | — | — | |
— | — | — | — | — | — | — | 3 | — | — | — | 11 | — | — | — | — | — | — | |
max °C | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 1 | 1 | 2 | 0 | -4 | -7 | -9 | -7 | -5 |
min °C | 0 | 1 | -1 | 0 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | -2 | -6 | -8 | -9 | -7 | -6 |
-7 | -6 | -9 | -7 | -4 | -5 | -5 | -3 | -6 | -6 | -6 | -6 | -9 | -16 | -16 | -16 | -13 | -11 | |
2650 | 2350 | 2150 | 2350 | 2450 | 2500 | 2400 | 2600 | 2400 | 2550 | 2450 | 2650 | 1750 | 1200 | 700 | 850 | 1200 | 1150 | |
Cloud base (m) | 600 | 600 | 850 | 600 | 600 | 550 | 600 | 550 | 600 | 600 | 600 | 550 | 600 | 600 | 1600 | 600 | 1550 | |
 | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — |
 | — | 7:14 | — | — | 7:15 | — | — | 7:16 | — | — | 7:17 | — | — | 7:20 | — | — | 7:21 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 3mm) on Wed afternoon. Becoming colder with heavy fall of snow, heaviest during Wed night. Freeze-thaw conditions (max 2°C on Tue afternoon, min -1°C on Mon night). Mainly near gales.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 11mm) on Thu night. Becoming colder with heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 2°C on Thu night, min -9°C on Sat morning). Winds decreasing (near gales from the SW on Thu night, light winds from the WSW by Sat 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
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SHIP10957 |
* 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.