– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Tue 17 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Tue 17 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Tue 17 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 142mm), heaviest during Fri morning. Mild temperatures (max 6°C on Tue afternoon, min 3°C on Wed night). Winds increasing (light winds from the SW on Wed morning, strong winds from the S by Wed night). | Days 5–7 Weather SummaryMild at first with light rain (total 6mm) on Fri afternoon followed by colder weather and light fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 4°C on Fri afternoon, min -8°C on Sat morning). Winds decreasing (fresh winds from the S on Fri afternoon, calm by Sun night). | ||||||||||||||||
Tue 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | | | | |  |  |  |  |  | |  | |
light rain | heavy rain | heavy rain | mod. rain | heavy rain | heavy rain | heavy rain | heavy rain | heavy rain | mod. rain | mod. snow | some clouds | snow shwrs | snow shwrs | light snow | light snow | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | 7 | — | 2 | 1 | 3 | 2 | — | |
3 | 26 | 10 | 6 | 24 | 12 | 15 | 26 | 19 | 6 | — | — | — | — | — | — | — | |
max °C | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | -1 | -7 | -5 | -5 | -5 | -5 | -5 |
min °C | 5 | 4 | 5 | 4 | 3 | 3 | 4 | 3 | 4 | 3 | -6 | -8 | -6 | -6 | -5 | -5 | -6 |
0 | -1 | 3 | -2 | -3 | -3 | -1 | -1 | 0 | -2 | -11 | -14 | -12 | -10 | -12 | -9 | -9 | |
2500 | 2400 | 2450 | 2600 | 2550 | 2400 | 2250 | 2350 | 2150 | 1950 | 750 | 600 | 800 | 350 | 750 | 800 | 250 | |
Cloud base (m) | 550 | 550 | 600 | 550 | 600 | 600 | 600 | 550 | 550 | 550 | 600 | 650 | 650 | 1950 | 650 | 600 | 600 |
 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — |
 | 7:15 | — | — | 7:16 | — | — | 7:17 | — | — | 7:20 | — | — | 7:21 | — | — | 7:22 | — |
Loading...
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 142mm), heaviest during Fri morning. Mild temperatures (max 6°C on Tue afternoon, min 3°C on Wed night). Winds increasing (light winds from the SW on Wed morning, strong winds from the S by Wed night).
South Twin Sister Weather (Days 3-6):
Mild at first with light rain (total 6mm) on Fri afternoon followed by colder weather and light fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 4°C on Fri afternoon, min -8°C on Sat morning). Winds decreasing (fresh winds from the S on Fri afternoon, calm by Sun 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 |
|---|---|---|---|---|---|
 | |||||
* 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.