– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Thu 23 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Thu 23 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Thu 23 Apr 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 6°C on Sat afternoon, min 1°C on Thu night). Wind will be generally light. | Days 5–7 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 9°C on Wed afternoon, min -2°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | |  | | | | |  |  | | | | | | | |
clear | clear | some clouds | clear | clear | some clouds | some clouds | some clouds | some clouds | clear | some clouds | cloudy | snow shwrs | some clouds | cloudy | some clouds | clear | clear | clear | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 1 | 2 | 4 | 4 | 4 | 6 | 5 | 4 | 6 | 5 | 1 | 0 | 0 | -1 | 1 | 2 | 4 | 9 | 10 |
min °C | 1 | 1 | 4 | 3 | 3 | 5 | 5 | 4 | 6 | 3 | 0 | 0 | -2 | -2 | 0 | 1 | 3 | 8 | 9 |
-2 | -2 | 2 | 3 | 2 | 2 | 3 | 2 | 4 | 0 | -4 | -5 | -4 | -2 | -2 | 1 | 1 | 8 | 8 | |
1650 | 1700 | 2000 | 1900 | 1900 | 2150 | 2050 | 2000 | 2200 | 2000 | 1600 | 1550 | 1300 | 1350 | 1700 | 1850 | 2350 | 2850 | 2900 | |
Cloud base (m) | 2950 | 2800 | 2600 | 2500 | 1500 | 600 | 700 | 650 | 700 | 1700 | 2600 | 9050 | |||||||
 | — | 6:00 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — |
 | — | — | — | 8:12 | — | — | 8:13 | — | — | 8:15 | — | — | 8:15 | — | — | 8:17 | — | — | 8:19 |
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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 Sat afternoon, min 1°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A dusting of new snow. Freeze-thaw conditions (max 9°C on Wed afternoon, min -2°C on Mon night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.