– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sat 15 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sat 15 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sat 15 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Very mild (max 12°C on Mon afternoon, min 8°C on Sun morning). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 16°C on Thu night, min 9°C on Tue night). Wind will be generally light. | |||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | | | | | | | | | | |  | |
rain shwrs | cloudy | rain shwrs | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | |
Cloud base (m) | 3600 | 2350 | 950 | 9350 | 9000 | 1900 | 8800 | 6650 | ||||||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.6 | — | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 10 | 8 | 10 | 11 | 10 | 12 | 12 | 9 | 10 | 10 | 9 | 11 | 13 | 13 | 15 | 16 |
min °C | 9 | 8 | 9 | 10 | 10 | 12 | 10 | 9 | 10 | 9 | 9 | 10 | 12 | 13 | 14 | 15 |
chill °C | 7 | 8 | 8 | 10 | 10 | 11 | 9 | 8 | 8 | 8 | 7 | 10 | 12 | 12 | 13 | 14 |
Freezing level m | 3600 | 3550 | 3700 | 3900 | 3950 | 4000 | 3850 | 3850 | 3850 | 4000 | 4250 | 4300 | 4400 | 4350 | 4500 | 4550 |
 | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:14 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 12°C on Mon afternoon, min 8°C on Sun morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 16°C on Thu night, min 9°C on Tue 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 |
|---|---|---|---|---|---|
 | |||||
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.