– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Tue 19 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Tue 19 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Tue 19 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Freeze-thaw conditions (max 6°C on Thu afternoon, min 0°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Mon afternoon. Freeze-thaw conditions (max 6°C on Fri night, min -2°C on Mon afternoon). Winds increasing (calm on Fri night, near gales from the S by Mon morning). | ||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | | | | |  | | | | | | |  | |  | |
some clouds | clear | some clouds | clear | clear | some clouds | clear | clear | some clouds | some clouds | clear | clear | some clouds | some clouds | some clouds | some clouds | light snow | light snow | mod. snow | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 6 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 1 | 2 | 4 | 5 | 5 | 6 | 6 | 4 | 6 | 6 | 4 | 5 | 5 | 2 | 5 | 4 | 0 | -2 | -2 |
min °C | 0 | 1 | 4 | 4 | 5 | 6 | 5 | 4 | 6 | 5 | 4 | 5 | 3 | 2 | 4 | 1 | -1 | -2 | -3 |
-4 | 1 | 3 | 0 | 5 | 4 | 3 | 4 | 5 | 2 | 1 | 2 | -1 | -2 | 0 | -6 | -9 | -10 | -6 | |
2500 | 2600 | 2900 | 3050 | 2950 | 3050 | 2900 | 2900 | 3150 | 3200 | 2950 | 3000 | 2750 | 2600 | 2800 | 2700 | 1800 | 1850 | 1600 | |
Cloud base (m) | 1700 | 950 | 1850 | 7050 | 6050 | 2250 | 6750 | 7800 | 7000 | 2800 | 2850 | 1550 | 1750 | 550 | 550 | ||||
 | — | 5:20 | — | — | 5:18 | — | — | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — | 5:15 | — | — |
 | — | — | — | 8:47 | — | — | 8:50 | — | — | 8:51 | — | — | 8:52 | — | — | 8:52 | — | — | 8:53 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Freeze-thaw conditions (max 6°C on Thu afternoon, min 0°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Mon afternoon. Freeze-thaw conditions (max 6°C on Fri night, min -2°C on Mon afternoon). Winds increasing (calm on Fri night, near gales from the S by Mon morning).
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 | |
* 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.