– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Wed 10 Jun Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Wed 10 Jun Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Wed 10 Jun Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummarySome drizzle, heaviest during Wed afternoon. Very mild (max 11°C on Fri night, min 1°C on Wed morning). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Warm (max 21°C on Mon night, min 11°C on Sat morning). Wind will be generally light. | |||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | | | | | | | | | | | | |
some clouds | rain shwrs | rain shwrs | clear | clear | clear | clear | rain shwrs | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | 1 | 0.1 | — | — | — | — | 0.1 | — | — | — | — | — | — | — | — | — | — | |
max °C | 1 | 4 | 5 | 6 | 9 | 8 | 7 | 9 | 11 | 12 | 15 | 17 | 17 | 18 | 19 | 19 | 20 | 21 |
min °C | 1 | 3 | 4 | 4 | 8 | 6 | 6 | 9 | 9 | 11 | 14 | 16 | 17 | 18 | 18 | 19 | 20 | 20 |
-2 | 1 | 4 | 3 | 7 | 4 | 6 | 8 | 7 | 10 | 14 | 16 | 17 | 18 | 18 | 19 | 20 | 20 | |
1800 | 2750 | 3000 | 2850 | 2850 | 2750 | 2600 | 2700 | 3050 | 3550 | 3600 | 3700 | 4000 | 4050 | 4200 | 4350 | 4600 | 4850 | |
Cloud base (m) | 600 | 850 | 2350 | 2450 | 9250 | 8950 | 9500 | 8950 | 9500 | |||||||||
 | 5:05 | — | — | 5:05 | — | — | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — |
 | — | — | 9:08 | — | — | 9:09 | — | — | 9:09 | — | — | 9:10 | — | — | 9:10 | — | — | 9:12 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Wed afternoon. Very mild (max 11°C on Fri night, min 1°C on Wed morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Warm (max 21°C on Mon night, min 11°C on Sat morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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 |  |
* 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.