– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sun 09 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sun 09 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sun 09 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummarySome drizzle, heaviest during Wed afternoon. Very mild (max 10°C on Sun night, min 7°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Very mild (max 12°C on Fri afternoon, min 9°C on Wed night). Wind will be generally light. | |||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | | |  | | | | |  |  | |  | | | |  | |
clear | clear | clear | clear | clear | clear | clear | clear | risk tstorm | risk tstorm | clear | rain shwrs | risk tstorm | rain shwrs | risk tstorm | some clouds | |
Cloud base (m) | 9450 | 8950 | 6900 | 3500 | 3350 | 1650 | 1950 | 2650 | 3350 | 9150 | ||||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | 1.5 | 1.4 | — | 0.2 | 0.2 | 0.4 | 0.1 | — |
max °C | 10 | 8 | 9 | 10 | 8 | 9 | 9 | 7 | 9 | 9 | 9 | 11 | 11 | 9 | 12 | 11 |
min °C | 8 | 8 | 9 | 9 | 8 | 9 | 7 | 7 | 9 | 9 | 9 | 10 | 10 | 9 | 11 | 10 |
chill °C | 6 | 6 | 7 | 7 | 7 | 7 | 6 | 6 | 9 | 8 | 7 | 10 | 10 | 9 | 10 | 10 |
Freezing level m | 3750 | 3700 | 3700 | 3800 | 3550 | 3600 | 3500 | 3400 | 3500 | 3450 | 3450 | 3550 | 3500 | 3500 | 3650 | 3550 |
 | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — |
 | — | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 |
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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 10°C on Sun night, min 7°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 2mm), mostly falling on Wed night. Very mild (max 12°C on Fri afternoon, min 9°C on Wed 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 |
|---|---|---|---|---|---|
SHIP4654 | |||||
 | |||||
Bellingham Airport |  | ||||
SHIP6602 | |||||
SHIP2362 | |||||
SHIP2628 | |||||
SHIP4732 | |||||
SHIP2056 |
* 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.