– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 am Sat 27 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Sat 27 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 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 4°C on Mon night, min -8°C on Sat morning). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 7°C on Tue night, min 0°C on Thu night). Winds increasing (light winds from the SW on Tue morning, near gales from the S 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 | cloudy | cloudy | some clouds | some clouds | some clouds | some clouds | cloudy | some clouds | some clouds | light rain | some clouds | some clouds | cloudy | light rain | cloudy | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | 0.3 | — | — | — | 0.1 | — | |
max °C | -8 | -7 | -6 | -4 | -2 | 0 | 0 | 0 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 5 | 4 | 3 |
min °C | -8 | -8 | -7 | -4 | -3 | -2 | 0 | -1 | 1 | 5 | 5 | 6 | 6 | 5 | 4 | 4 | 3 | 0 |
-8 | -11 | -10 | -7 | -7 | -5 | -3 | -3 | 1 | 3 | 4 | 5 | 3 | 1 | 0 | -1 | -2 | -8 | |
250 | 350 | 0 | 450 | 800 | 650 | 1500 | 1350 | 2600 | 2500 | 2500 | 2500 | 2600 | 2650 | 2550 | 2550 | 2200 | 1850 | |
Cloud base (m) | 600 | 600 | 1650 | 650 | 700 | 650 | 950 | 700 | 750 | 2300 | 900 | 2000 | 1950 | 750 | 5250 | 600 | ||
 | 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 4°C on Mon night, min -8°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 7°C on Tue night, min 0°C on Thu night). Winds increasing (light winds from the SW on Tue morning, near gales from the S by Thu night).
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 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.