– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Sat 31 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Sat 31 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Sat 31 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA heavy fall of snow, heaviest during Sun morning. Freeze-thaw conditions (max 4°C on Tue morning, min -5°C on Sun night). Winds decreasing (gales from the S on Sat night, light winds from the WSW by Tue morning). | Days 5–7 Weather SummaryMostly dry. Very mild (max 10°C on Thu afternoon, min 3°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||
Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | Friday 6 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  |  |  |  |  |  |  | | | | | | | |
light snow | heavy snow | light snow | snow shwrs | light snow | light snow | some clouds | cloudy | some clouds | cloudy | rain shwrs | clear | clear | clear | clear | some clouds | some clouds | some clouds | some clouds | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
3 | 13 | 5 | 1 | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | 0.1 | — | — | — | — | — | — | — | — | |
max °C | 2 | -4 | -4 | -4 | -3 | -1 | 2 | 4 | 4 | 5 | 7 | 7 | 8 | 8 | 10 | 10 | 5 | 4 | 2 |
min °C | -3 | -4 | -4 | -5 | -4 | -2 | 0 | 3 | 4 | 4 | 5 | 7 | 6 | 8 | 9 | 6 | 4 | 3 | 1 |
-14 | -11 | -11 | -12 | -12 | -8 | -4 | 1 | 0 | -1 | 3 | 4 | 3 | 8 | 9 | 4 | 0 | 0 | -3 | |
2350 | 1500 | 1600 | 1500 | 1350 | 1550 | 2200 | 2850 | 2900 | 2850 | 3000 | 3200 | 3250 | 3500 | 3550 | 3600 | 3100 | 2850 | 2500 | |
Cloud base (m) | 750 | 600 | 750 | 850 | 600 | 1000 | 2150 | 3950 | 2550 | 2600 | 8350 | 8100 | 6350 | 6000 | 6600 | ||||
 | — | 7:37 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:30 | — | — |
 | — | — | 5:06 | — | — | 5:07 | — | — | 5:08 | — | — | 5:10 | — | — | 5:12 | — | — | 5:14 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A heavy fall of snow, heaviest during Sun morning. Freeze-thaw conditions (max 4°C on Tue morning, min -5°C on Sun night). Winds decreasing (gales from the S on Sat night, light winds from the WSW by Tue morning).
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 10°C on Thu afternoon, min 3°C on Fri 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.