– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Fri 22 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Fri 22 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Fri 22 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Mild temperatures (max 6°C on Fri afternoon, min 2°C on Sat night). Winds increasing (light winds from the WSW on Fri morning, strong winds from the SSW by Sun night). | Days 4–6 Weather SummaryA light covering of new snow mostly falling on Mon night. Freeze-thaw conditions (max 7°C on Wed afternoon, min -3°C on Mon night). Winds decreasing (strong winds from the S on Mon morning, calm by Mon night). | |||||||||||||||||
Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | | | |  |  | |  | | |  | | | | |
some clouds | clear | some clouds | some clouds | rain shwrs | some clouds | some clouds | some clouds | cloudy | cloudy | cloudy | mod. snow | cloudy | cloudy | rain shwrs | clear | clear | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | |
— | — | — | — | 0.1 | — | — | — | — | — | — | — | — | — | 0.1 | — | — | — | |
max °C | 5 | 6 | 6 | 4 | 5 | 4 | 2 | 4 | 4 | 2 | 1 | -1 | -1 | 2 | 4 | 5 | 7 | 7 |
min °C | 5 | 6 | 5 | 4 | 5 | 2 | 2 | 4 | 3 | 1 | 1 | -3 | -2 | 0 | 3 | 4 | 6 | 6 |
3 | 5 | 2 | 0 | 1 | -3 | -2 | 0 | -4 | -6 | -6 | -3 | -4 | -2 | 1 | 2 | 4 | 4 | |
2750 | 3000 | 3000 | 2900 | 3000 | 2750 | 2550 | 2800 | 2650 | 2300 | 2200 | 1700 | 1850 | 2700 | 3400 | 3650 | 3650 | 3700 | |
Cloud base (m) | 2650 | 6650 | 2100 | 6250 | 1600 | 2400 | 2700 | 1800 | 550 | 600 | 650 | 1900 | 750 | 9150 | ||||
 | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — | 5:15 | — | — | 5:13 | — | — | 5:13 | — | — |
 | — | — | 8:51 | — | — | 8:52 | — | — | 8:52 | — | — | 8:53 | — | — | 8:54 | — | — | 8:57 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Mild temperatures (max 6°C on Fri afternoon, min 2°C on Sat night). Winds increasing (light winds from the WSW on Fri morning, strong winds from the SSW by Sun night).
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Mon night. Freeze-thaw conditions (max 7°C on Wed afternoon, min -3°C on Mon night). Winds decreasing (strong winds from the S on Mon morning, calm by Mon night).
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.