– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Fri 08 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Fri 08 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 08 May 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 0°C on Fri afternoon). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 12°C on Tue afternoon, min 5°C on Mon afternoon). Wind will be generally light. | ||||||||||||||||
Fri 8 | Saturday 9 | Sunday 10 | Monday 11 | Tuesday 12 | Wednesday 13 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | |  | | |  | | | | | | | |
some clouds | some clouds | clear | some clouds | some clouds | cloudy | some clouds | snow shwrs | cloudy | clear | clear | clear | some clouds | some clouds | clear | clear | clear | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 0 | 2 | 4 | 6 | 6 | 4 | 2 | 1 | 3 | 6 | 8 | 9 | 12 | 12 | 11 | 12 | 11 |
min °C | 0 | 0 | 2 | 5 | 4 | 2 | 1 | 0 | 1 | 5 | 7 | 9 | 11 | 11 | 11 | 12 | 9 |
-5 | -5 | -2 | 3 | 0 | -3 | -4 | -6 | -1 | 4 | 7 | 7 | 9 | 9 | 9 | 11 | 7 | |
2200 | 2600 | 3250 | 3250 | 3050 | 2600 | 2350 | 2350 | 2950 | 3200 | 3450 | 3700 | 3800 | 3800 | 3750 | 3750 | 3650 | |
Cloud base (m) | 1900 | 1800 | 9050 | 6500 | 6550 | 5100 | 2250 | 1800 | 6600 | 8650 | 9400 | 7100 | 6600 | 6650 | |||
 | — | — | 5:35 | — | — | 5:33 | — | — | 5:31 | — | — | 5:31 | — | — | 5:28 | — | — |
 | — | 8:31 | — | — | 8:34 | — | — | 8:35 | — | — | 8:36 | — | — | 8:37 | — | — | 8:38 |
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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 0°C on Fri afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 12°C on Tue afternoon, min 5°C on Mon afternoon). Wind will be generally light.
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.