– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Thu 16 Apr Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Thu 16 Apr Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Thu 16 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 5°C on Sun morning, min -8°C on Thu afternoon). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Mild temperatures (max 8°C on Mon afternoon, min 4°C on Wed morning). Wind will be generally light. | ||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | ||||||||||||
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 | some clouds | some clouds | rain shwrs | clear | clear | risk tstorm | some clouds | some clouds | cloudy | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | 0.1 | — | — | 0.1 | — | — | — | |
max °C | -7 | -6 | -5 | -3 | 0 | 0 | 2 | 4 | 5 | 6 | 6 | 7 | 8 | 8 | 6 | 7 | 7 |
min °C | -8 | -8 | -6 | -4 | -2 | 0 | 1 | 2 | 4 | 6 | 6 | 7 | 8 | 6 | 6 | 7 | 6 |
-14 | -15 | -6 | -4 | -4 | -4 | -4 | -1 | 0 | 4 | 6 | 7 | 6 | 4 | 4 | 5 | 4 | |
1150 | 800 | 1050 | 1400 | 1950 | 2100 | 2400 | 2650 | 2750 | 2900 | 2900 | 3100 | 3150 | 3100 | 3150 | 3250 | 3150 | |
Cloud base (m) | 750 | 600 | 600 | 800 | 5100 | 3200 | 2900 | 2500 | 3000 | 5300 | 5550 | 5600 | 3450 | 6350 | 4500 | ||
 | — | — | 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 5°C on Sun morning, min -8°C on Thu afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Mild temperatures (max 8°C on Mon afternoon, min 4°C on Wed morning). 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.