– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Thu 03 Sep Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Thu 03 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Thu 03 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 7mm) at first, then becoming colder with a dusting of snow on Sat morning. Mild temperatures (max 5°C on Sun morning, min 1°C on Thu afternoon). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 10°C on Tue afternoon, min 5°C on Mon morning). Wind will be generally light. | ||||||||||||||||
Thu 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | |  | | | | | |  | |
rain shwrs | rain shwrs | some clouds | light rain | light rain | light snow | light snow | rain shwrs | clear | clear | clear | clear | clear | clear | clear | some clouds | cloudy | |
Cloud base (m) | 2050 | 2350 | 2450 | 1950 | 1700 | 850 | 700 | 2550 | 2650 | 6650 | 6300 | 2350 | 7000 | 3350 | |||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
mm | 0.5 | 0.2 | — | 2 | 1.9 | 1.4 | 0.7 | 0.5 | — | — | — | — | — | — | — | — | — |
max °C | 3 | 2 | 2 | 3 | 3 | 2 | 2 | 4 | 5 | 7 | 7 | 5 | 6 | 7 | 8 | 10 | 10 |
min °C | 1 | 1 | 1 | 3 | 2 | 2 | 2 | 3 | 5 | 7 | 6 | 5 | 6 | 6 | 7 | 9 | 9 |
chill °C | -2 | 1 | 1 | 3 | 2 | 1 | 0 | -1 | 4 | 7 | 5 | 2 | 4 | 6 | 6 | 9 | 9 |
Freezing level m | 2500 | 2450 | 2450 | 2550 | 2550 | 2400 | 2500 | 2700 | 2850 | 3050 | 3000 | 2900 | 3000 | 3350 | 3400 | 3500 | 3450 |
 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — |
 | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:36 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 7mm) at first, then becoming colder with a dusting of snow on Sat morning. Mild temperatures (max 5°C on Sun morning, min 1°C on Thu afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 10°C on Tue afternoon, min 5°C on Mon 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 |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport |  | ||||
SHIP4275 |
* 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.