– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 15 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 15 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryDrizzle on Fri night turning to light snow on Sat morning. Freeze-thaw conditions (max 12°C on Thu afternoon, min -2°C on Sat morning). Winds increasing (light winds from the SSW on Thu morning, strong winds from the SSW by Fri night). | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 4°C on Tue night, min 0°C on Sun morning). Wind will be generally light. | |||||||||||||||||
Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | | |  | |  | | |  | | | | |
clear | clear | clear | some clouds | clear | rain shwrs | snow shwrs | clear | clear | cloudy | some clouds | some clouds | cloudy | cloudy | cloudy | some clouds | clear | clear | |
Cloud base (m) | 9550 | 8300 | 2000 | 6950 | 6250 | 4050 | 5050 | 4750 | 2850 | 2750 | 3100 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | 1.4 | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 11 | 12 | 12 | 11 | 11 | 8 | -1 | -1 | -1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | 3 | 4 |
min °C | 10 | 11 | 11 | 11 | 10 | 2 | -2 | -2 | -2 | 0 | 2 | 3 | 2 | 2 | 1 | 1 | 2 | 3 |
chill °C | 9 | 9 | 8 | 8 | 6 | -5 | -9 | -8 | -7 | -3 | 1 | 0 | -3 | -2 | -2 | -2 | 1 | 3 |
Freezing level m | 3950 | 4000 | 3800 | 3800 | 3600 | 2750 | 1900 | 1900 | 1800 | 2350 | 2650 | 2700 | 2500 | 2450 | 2250 | 2450 | 2600 | 2650 |
 | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — |
 | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:10 | — | — | 6:08 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Drizzle on Fri night turning to light snow on Sat morning. Freeze-thaw conditions (max 12°C on Thu afternoon, min -2°C on Sat morning). Winds increasing (light winds from the SSW on Thu morning, strong winds from the SSW by Fri night).
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 4°C on Tue night, min 0°C on Sun morning). 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 |
|---|---|---|---|---|---|
SHIP2507 | |||||
 | |||||
SHIP8224 | |||||
SHIP3376 | |||||
SHIP4438 | |||||
SHIP5839 |
* 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.