– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Fri 22 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Fri 22 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 22 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Mild temperatures (max 7°C on Fri afternoon, min 1°C on Sun morning). Winds increasing (light winds from the WSW on Fri afternoon, strong winds from the S by Mon morning). | Days 5–7 Weather SummaryA light covering of new snow mostly falling on Mon afternoon. Freeze-thaw conditions (max 5°C on Wed afternoon, min -3°C on Mon night). Winds decreasing (near gales from the S on Mon afternoon, calm by Mon night). | ||||||||||||||||
Fri 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | | |  |  |  | |  | | | |  | |
clear | some clouds | some clouds | rain shwrs | some clouds | some clouds | clear | some clouds | cloudy | light snow | light snow | cloudy | snow shwrs | some clouds | rain shwrs | rain shwrs | clear | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | 2 | 2 | — | 1 | — | — | — | — | |
— | — | — | 0.1 | — | — | — | — | — | — | — | — | — | — | 0.1 | 0.1 | — | |
max °C | 7 | 6 | 4 | 5 | 4 | 2 | 4 | 4 | 1 | 0 | -2 | -2 | 0 | 2 | 3 | 5 | 5 |
min °C | 6 | 4 | 4 | 5 | 2 | 1 | 3 | 2 | 1 | -1 | -3 | -2 | -1 | 1 | 2 | 4 | 4 |
5 | 0 | 0 | 1 | -3 | -4 | -1 | -5 | -7 | -9 | -3 | -2 | -1 | -1 | -2 | 0 | 1 | |
3000 | 2900 | 2850 | 2900 | 2650 | 2500 | 2750 | 2500 | 2250 | 1900 | 1700 | 1850 | 2150 | 2600 | 3050 | 3150 | 3350 | |
Cloud base (m) | 2700 | 6650 | 2350 | 6050 | 3050 | 2900 | 2300 | 1500 | 600 | 650 | 750 | 2050 | 900 | 1800 | |||
 | — | — | 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 7°C on Fri afternoon, min 1°C on Sun morning). Winds increasing (light winds from the WSW on Fri afternoon, strong winds from the S by Mon morning).
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Mon afternoon. Freeze-thaw conditions (max 5°C on Wed afternoon, min -3°C on Mon night). Winds decreasing (near gales from the S on Mon afternoon, 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.