– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Sat 23 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Sat 23 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Sat 23 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA light covering of new snow mostly falling on Mon night. Freeze-thaw conditions (max 5°C on Sun night, min -2°C on Mon night). Winds decreasing (near gales from the S on Mon morning, calm by Mon night). | Days 5–7 Weather SummaryMostly dry. Mild temperatures (max 9°C on Thu afternoon, min 1°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | Thursday 28 | Friday 29 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  |  | | |  | | |  | | | | | |  | |
clear | clear | some clouds | rain shwrs | cloudy | light snow | snow shwrs | light snow | some clouds | some clouds | clear | some clouds | clear | clear | clear | some clouds | cloudy | cloudy | cloudy | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | 1 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 4 | 2 | 4 | 5 | 1 | -1 | -2 | -2 | 0 | 3 | 6 | 8 | 8 | 7 | 9 | 8 | 3 | 1 | 0 |
min °C | 2 | 1 | 4 | 2 | 1 | -1 | -2 | -2 | -1 | 1 | 4 | 8 | 7 | 7 | 8 | 5 | 2 | 1 | -2 |
-3 | -4 | 0 | -5 | -7 | -9 | -8 | -5 | -3 | -1 | 1 | 8 | 7 | 7 | 6 | 3 | 0 | -2 | -5 | |
2600 | 2500 | 2750 | 2600 | 2200 | 2000 | 1750 | 1750 | 2200 | 3150 | 3750 | 3750 | 3750 | 3600 | 3650 | 3500 | 2850 | 2350 | 1900 | |
Cloud base (m) | 3900 | 2550 | 2750 | 2550 | 2150 | 750 | 1800 | 550 | 600 | 2100 | 900 | 1950 | 9350 | 9350 | 6350 | 2200 | 800 | 700 | |
 | — | 5:16 | — | — | 5:15 | — | — | 5:13 | — | — | 5:13 | — | — | 5:11 | — | — | 5:11 | — | — |
 | — | — | — | 8:52 | — | — | 8:53 | — | — | 8:54 | — | — | 8:57 | — | — | 8:58 | — | — | 8:59 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A light covering of new snow mostly falling on Mon night. Freeze-thaw conditions (max 5°C on Sun night, min -2°C on Mon night). Winds decreasing (near gales from the S on Mon morning, calm by Mon night).
South Twin Sister Weather (Days 3-6):
Mostly dry. Mild temperatures (max 9°C on Thu afternoon, min 1°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 | |
* 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.