– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 pm Tue 06 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Tue 06 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryDrizzle at first, then turning colder with dusting of snow on Fri morning. Freeze-thaw conditions (max 11°C on Tue night, min -3°C on Fri afternoon). Winds increasing (light winds from the W on Tue night, strong winds from the SW by Thu night). | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 6°C on Mon afternoon, min -5°C on Fri night). Wind will be generally light. | |||||||||||||||
Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | | |  |  |  |  | | | | | | | |
clear | clear | clear | clear | clear | clear | rain shwrs | snow shwrs | some clouds | light snow | some clouds | some clouds | clear | clear | clear | clear | |
Cloud base (m) | 8250 | 9100 | 8900 | 7000 | 8350 | 9150 | 600 | 550 | 600 | 550 | 750 | 850 | ||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | 2 | — | 2 | — | — | — | — | — | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
max °C | 11 | 11 | 11 | 11 | 10 | 9 | 7 | 0 | -3 | -4 | -4 | -1 | -1 | 0 | 2 | 4 |
min °C | 10 | 10 | 11 | 10 | 9 | 8 | 3 | -1 | -3 | -5 | -4 | -3 | -1 | -1 | 1 | 3 |
chill °C | 8 | 8 | 9 | 8 | 7 | 5 | -4 | -7 | -9 | -5 | -9 | -7 | -5 | -6 | -2 | 0 |
Freezing level m | 4100 | 3950 | 3850 | 3950 | 3850 | 3600 | 3000 | 1900 | 1600 | 1400 | 1500 | 2000 | 2000 | 2150 | 2650 | 3450 |
 | — | 7:15 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — |
 | — | — | 6:35 | — | — | 6:32 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Drizzle at first, then turning colder with dusting of snow on Fri morning. Freeze-thaw conditions (max 11°C on Tue night, min -3°C on Fri afternoon). Winds increasing (light winds from the W on Tue night, strong winds from the SW by Thu night).
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 6°C on Mon afternoon, min -5°C on Fri night). Wind will be generally light.
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 |
|---|---|---|---|---|---|
SHIP3425 | |||||
 | |||||
SHIP11106 | |||||
SHIP3611 | |||||
SHIP1784 | |||||
SHIP3027 | |||||
* 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.