– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Wed 12 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Wed 12 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 12 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Very mild (max 11°C on Thu afternoon, min 8°C on Sat morning). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 10°C on Sat night, min 7°C on Tue morning). Wind will be generally light. | |||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | | |  | | | | | |  | |
risk tstorm | some clouds | rain shwrs | risk tstorm | rain shwrs | clear | risk tstorm | rain shwrs | risk tstorm | clear | some clouds | clear | clear | clear | some clouds | some clouds | |
Cloud base (m) | 3300 | 3500 | 2700 | 3450 | 3200 | 9050 | 6950 | 8500 | ||||||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 3 | — | 0.3 | 0.5 | 0.8 | — | 0.9 | 0.1 | 0.1 | — | — | — | — | — | — | — |
max °C | 9 | 10 | 11 | 11 | 10 | 11 | 10 | 8 | 11 | 10 | 9 | 10 | 10 | 9 | 10 | 10 |
min °C | 9 | 9 | 11 | 10 | 9 | 10 | 9 | 8 | 10 | 9 | 9 | 10 | 9 | 9 | 10 | 8 |
chill °C | 8 | 9 | 11 | 10 | 8 | 8 | 7 | 6 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 6 |
Freezing level m | 3450 | 3500 | 3550 | 3450 | 3450 | 3550 | 3450 | 3500 | 3700 | 3700 | 3650 | 3750 | 3800 | 3850 | 3750 | 3550 |
 | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | — | — | 8:25 | — | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 5mm), mostly falling on Wed night. Very mild (max 11°C on Thu afternoon, min 8°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 10°C on Sat night, min 7°C on Tue 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 |  | ||||
Abbotsford Airport |  | ||||
BUOY-46118 | |||||
* 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.