– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Wed 15 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Wed 15 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 15 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 6°C on Sat afternoon, min -6°C on Wed night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 13°C on Tue afternoon, min 7°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | | | |  | | | |  |  | | | | | | |
snow shwrs | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | some clouds | some clouds | some clouds | clear | clear | clear | clear | clear | clear | some clouds | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -5 | -5 | -2 | -3 | -4 | 0 | 3 | 4 | 6 | 8 | 8 | 10 | 10 | 9 | 11 | 12 | 10 | 13 | 14 |
min °C | -6 | -6 | -3 | -4 | -4 | -2 | 0 | 3 | 5 | 7 | 8 | 10 | 9 | 9 | 11 | 11 | 10 | 12 | 9 |
-9 | -9 | -7 | -7 | -4 | -2 | -2 | 0 | 2 | 6 | 8 | 10 | 8 | 8 | 11 | 10 | 10 | 12 | 7 | |
350 | 850 | 1200 | 800 | 1050 | 1500 | 1950 | 2200 | 2350 | 2550 | 2700 | 2750 | 2850 | 3100 | 3100 | 3050 | 3200 | 3250 | 3100 | |
Cloud base (m) | 700 | 600 | 850 | 600 | 600 | 850 | 6200 | 5200 | 2550 | 2600 | 3350 | 9250 | |||||||
 | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:05 | — | — |
 | — | — | — | 8:00 | — | — | 8:01 | — | — | 8:02 | — | — | 8:04 | — | — | 8:06 | — | — | 8:07 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of new snow. Freeze-thaw conditions (max 6°C on Sat afternoon, min -6°C on Wed night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 13°C on Tue afternoon, min 7°C on Sat 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.