– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Fri 17 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Fri 17 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 17 Apr Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Freeze-thaw conditions (max 7°C on Sun afternoon, min -4°C on Fri afternoon). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Freeze-thaw conditions (max 8°C on Mon afternoon, min -4°C on Wed night). Wind will be generally light. | ||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  | |  | | | | | |  |  |  | | | |
some clouds | cloudy | some clouds | some clouds | some clouds | some clouds | cloudy | some clouds | some clouds | some clouds | some clouds | cloudy | rain shwrs | rain shwrs | clear | some clouds | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | 0.1 | 0.2 | — | — | — | |
max °C | -2 | 0 | 0 | 2 | 5 | 6 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 4 | -1 | -2 | -3 |
min °C | -4 | -1 | 0 | 2 | 3 | 5 | 6 | 6 | 7 | 8 | 7 | 6 | 6 | 1 | -1 | -3 | -4 |
-4 | -3 | -4 | -2 | 0 | 2 | 5 | 4 | 7 | 6 | 6 | 6 | 5 | -5 | -7 | -8 | -11 | |
1500 | 2000 | 2200 | 2450 | 2800 | 2900 | 2950 | 3000 | 3100 | 3200 | 3100 | 3200 | 3200 | 2550 | 1900 | 1600 | 1500 | |
Cloud base (m) | 900 | 4800 | 4000 | 3050 | 7600 | 3350 | 3250 | 5200 | 5950 | 5000 | 3400 | 5200 | 4600 | 2000 | 550 | 850 | 600 |
 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — |
 | — | 8:01 | — | — | 8:02 | — | — | 8:04 | — | — | 8:06 | — | — | 8:07 | — | — | 8:08 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Freeze-thaw conditions (max 7°C on Sun afternoon, min -4°C on Fri afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 8°C on Mon afternoon, min -4°C on Wed night). 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.