– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Fri 22 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Fri 22 May Local Time
Updates in:
Update imminent hr min s
Issued: 10 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. Very mild (max 11°C on Fri afternoon, min 5°C on Sat night). Winds increasing (calm on Fri night, fresh winds from the SSE by Sun night). | Days 4–6 Weather SummaryA dusting of snow turning to light rain (total 2mm) on Tue afternoon. Freeze-thaw conditions (max 7°C on Mon morning, min 0°C on Mon night). Wind will be generally light. | |||||||||||||||||
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 | clear | cloudy | cloudy | cloudy | light snow | cloudy | rain shwrs | rain shwrs | rain shwrs | rain shwrs | some clouds | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | |
— | — | — | — | 0.1 | — | — | — | — | — | — | 0.4 | — | 1.1 | 0.5 | 0.1 | 0.1 | — | |
max °C | 10 | 11 | 11 | 7 | 9 | 7 | 5 | 9 | 8 | 7 | 7 | 3 | 1 | 3 | 4 | 4 | 7 | 7 |
min °C | 9 | 11 | 8 | 7 | 8 | 5 | 5 | 8 | 7 | 6 | 7 | 0 | 0 | 2 | 3 | 3 | 5 | 6 |
9 | 10 | 6 | 6 | 6 | 2 | 3 | 6 | 3 | 2 | 3 | -2 | 0 | 0 | 0 | 1 | 4 | 5 | |
2750 | 3000 | 2950 | 2950 | 2950 | 2650 | 2450 | 2750 | 2750 | 2400 | 2350 | 1650 | 1700 | 2200 | 2550 | 3300 | 3150 | 3350 | |
Cloud base (m) | 7700 | 2700 | 6650 | 2350 | 1800 | 2800 | 2600 | 2600 | 2850 | 700 | 600 | 800 | 2000 | 850 | 1650 | |||
 | 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. Very mild (max 11°C on Fri afternoon, min 5°C on Sat night). Winds increasing (calm on Fri night, fresh winds from the SSE by Sun night).
South Twin Sister Weather (Days 3-6):
A dusting of snow turning to light rain (total 2mm) on Tue afternoon. Freeze-thaw conditions (max 7°C on Mon morning, min 0°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.