– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Sat 01 Nov Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Sat 01 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sat 01 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 13mm), heaviest on Sat morning giving way to a moderate fall of snow, heaviest on Sat night. Freeze-thaw conditions (max 7°C on Sat morning, min -3°C on Sun morning). Winds decreasing (near gales from the S on Sat morning, calm by Mon morning). | Days 4–6 Weather SummaryModerate rain (total 18mm) on Thu night. Becoming colder with heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 6°C on Tue night, min 0°C on Thu morning). Winds increasing (light winds from the SE on Tue morning, near gales from the S by Wed night). | |||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  |  |  | | |  |  |  |  | |  |  | |
heavy rain | light snow | snow shwrs | snow shwrs | snow shwrs | cloudy | some clouds | clear | some clouds | clear | some clouds | rain shwrs | light rain | mod. rain | mod. snow | light snow | cloudy | heavy snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | 2 | 8 | 2 | 1 | — | — | — | — | — | — | — | — | — | 8 | 1 | — | 13 | |
13 | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 6 | — | — | — | 6 | |
max°C | 7 | 1 | -1 | -2 | -2 | 1 | 2 | 2 | 3 | 4 | 5 | 6 | 5 | 3 | 2 | 0 | 2 | 2 |
min°C | 6 | -1 | -2 | -3 | -2 | -1 | 1 | 1 | 2 | 3 | 4 | 4 | 4 | 2 | 1 | 0 | 1 | 0 |
0 | -7 | -5 | -10 | -4 | -1 | 1 | 1 | -1 | 1 | 1 | 0 | -1 | -4 | -7 | -7 | -5 | -5 | |
2750 | 1400 | 1250 | 1150 | 1300 | 1550 | 1750 | 1750 | 1900 | 2100 | 2300 | 2400 | 2250 | 1900 | 1750 | 1600 | 1850 | 1500 | |
Cloud base (m) | 500 | 650 | 600 | 750 | 1000 | 5200 | 3050 | 2900 | 6250 | 2450 | 2000 | 600 | 550 | 550 | 650 | 550 | 550 | |
 | 7:54 | — | — | 6:54 | — | — | 7:56 | — | — | 7:58 | — | — | 8:00 | — | — | 8:00 | — | — |
 | — | 5:47 | — | — | 4:45 | — | — | 5:45 | — | — | 5:43 | — | — | 5:42 | — | — | 5:39 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 13mm), heaviest on Sat morning giving way to a moderate fall of snow, heaviest on Sat night. Freeze-thaw conditions (max 7°C on Sat morning, min -3°C on Sun morning). Winds decreasing (near gales from the S on Sat morning, calm by Mon morning).
South Twin Sister Weather (Days 3-6):
Moderate rain (total 18mm) on Thu night. Becoming colder with heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 6°C on Tue night, min 0°C on Thu morning). Winds increasing (light winds from the SE on Tue morning, near gales from the S by Wed night).
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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
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SHIP3516 |
* 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.