– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 am Sat 27 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 am Sat 27 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 9 am Sat 27 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Freeze-thaw conditions (max 2°C on Mon night, min -10°C on Sat morning). Wind will be generally light. | Days 4–6 Weather SummaryA light covering of new snow mostly falling on Thu night. Freeze-thaw conditions (max 2°C on Tue morning, min -4°C on Thu night). Winds increasing (light winds from the WSW on Tue night, gales from the SSW by Thu night). | |||||||||||||||||
Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | | | | | | | | |  | | |  | |
some clouds | cloudy | some clouds | some clouds | cloudy | some clouds | some clouds | some clouds | some clouds | cloudy | cloudy | some clouds | cloudy | cloudy | cloudy | cloudy | cloudy | light snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -9 | -10 | -6 | -5 | -5 | -2 | -2 | -1 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 0 | -1 | -3 |
min °C | -10 | -10 | -10 | -6 | -5 | -5 | -2 | -2 | 1 | 2 | 2 | 2 | 2 | 2 | 1 | -2 | -2 | -4 |
-16 | -18 | -18 | -13 | -12 | -12 | -8 | -8 | -3 | -2 | -3 | -3 | -3 | -3 | -5 | -9 | -10 | -14 | |
250 | 300 | 0 | 400 | 750 | 600 | 1450 | 1500 | 2550 | 2600 | 2400 | 2500 | 2500 | 2600 | 2250 | 2200 | 1900 | 1600 | |
Cloud base (m) | 600 | 600 | 750 | 650 | 800 | 650 | 1000 | 650 | 600 | 3150 | 800 | 2400 | 3000 | 4650 | 2150 | 2500 | 700 | |
 | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — |
 | — | 4:17 | — | — | 4:17 | — | — | 4:19 | — | — | 4:20 | — | — | 4:21 | — | — | 4:22 | — |
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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 2°C on Mon night, min -10°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A light covering of new snow mostly falling on Thu night. Freeze-thaw conditions (max 2°C on Tue morning, min -4°C on Thu night). Winds increasing (light winds from the WSW on Tue night, gales from the SSW by Thu night).
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.