– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Wed 02 Sep Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Wed 02 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Wed 02 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 4°C on Wed afternoon, min 0°C on Wed night). Winds decreasing (strong winds from the S on Wed night, calm by Sat morning). | Days 5–7 Weather SummaryMostly dry. Mild temperatures (max 6°C on Sun afternoon, min 2°C on Sat afternoon). Wind will be generally light. | ||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | |  |  |  | | | | |  |  | |  | |
light rain | snow shwrs | some clouds | some clouds | some clouds | some clouds | light snow | cloudy | cloudy | light rain | some clouds | some clouds | light rain | rain shwrs | clear | clear | clear | |
Cloud base (m) | 1800 | 2200 | 1500 | 1600 | 2150 | 1950 | 900 | 650 | 600 | 650 | 2400 | 2600 | 2500 | 2700 | |||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
mm | 0.9 | — | — | — | — | — | — | — | — | 0.2 | — | — | 0.2 | 0.1 | — | — | — |
max °C | 4 | 2 | 0 | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 3 | 4 | 6 | 6 | 5 | 6 | 6 |
min °C | 3 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 5 | 5 | 5 | 6 | 6 |
chill °C | -3 | -5 | -5 | -5 | 1 | 0 | 1 | 1 | 1 | 1 | -1 | 2 | 5 | 4 | 4 | 5 | 6 |
Freezing level m | 2650 | 2250 | 2200 | 2350 | 2450 | 2350 | 2400 | 2450 | 2400 | 2500 | 2600 | 2650 | 2850 | 2900 | 2900 | 3000 | 3100 |
 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — |
 | 7:47 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 4°C on Wed afternoon, min 0°C on Wed night). Winds decreasing (strong winds from the S on Wed night, calm by Sat morning).
South Twin Sister Weather (Days 3-6):
Mostly dry. Mild temperatures (max 6°C on Sun afternoon, min 2°C on Sat afternoon). 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 |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport |  | ||||
Abbotsford Airport |  |
* 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.