– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Tue 09 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Tue 09 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Tue 09 Dec Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 97mm), heaviest during Wed morning. Later becoming colder with a dusting of snow on Wed night. Freeze-thaw conditions (max 5°C on Tue night, min -1°C on Tue afternoon). Winds increasing (light winds from the SSE on Tue afternoon, strong winds from the W by Wed night). | Days 5–7 Weather SummaryHeavy rain (total 36mm), heaviest during Mon morning. Temperatures will be slightly above freezing (max 4°C on Sat afternoon, min 2°C on Sat night). Winds increasing (light winds from the WSW on Fri afternoon, near gales from the S by Mon morning). | ||||||||||||||||
Tue 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | | | |  | |  |  | |  | | | | |
cloudy | heavy rain | heavy rain | heavy rain | light snow | cloudy | cloudy | light snow | light rain | light rain | rain shwrs | some clouds | light rain | mod. rain | light rain | light rain | mod. rain | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | 2 | — | — | 1 | — | — | — | — | — | — | — | — | — | |
— | 23 | 25 | 20 | 26 | — | — | 0.8 | 1 | 5 | 1.8 | — | 0.1 | 6 | 2 | 0.4 | 8 | |
max°C | 0 | 5 | 5 | 5 | 4 | 0 | 0 | 4 | 4 | 3 | 3 | 3 | 4 | 4 | 3 | 3 | 4 |
min°C | -1 | 2 | 5 | 5 | 0 | 0 | -1 | 0 | 3 | 3 | 3 | 3 | 4 | 2 | 3 | 3 | 3 |
-6 | -4 | 0 | 0 | -5 | -4 | -3 | -3 | -2 | -1 | -2 | -1 | -1 | -4 | -3 | -3 | -3 | |
1500 | 2450 | 2450 | 2500 | 2000 | 1450 | 1450 | 2050 | 2200 | 2000 | 2250 | 2400 | 2350 | 2250 | 1950 | 2000 | 2350 | |
Cloud base (m) | 850 | 550 | 550 | 550 | 550 | 1700 | 2750 | 600 | 600 | 550 | 600 | 700 | 2050 | 650 | 600 | 600 | 700 |
 | — | — | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — |
 | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — | — | 4:10 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 97mm), heaviest during Wed morning. Later becoming colder with a dusting of snow on Wed night. Freeze-thaw conditions (max 5°C on Tue night, min -1°C on Tue afternoon). Winds increasing (light winds from the SSE on Tue afternoon, strong winds from the W by Wed night).
South Twin Sister Weather (Days 3-6):
Heavy rain (total 36mm), heaviest during Mon morning. Temperatures will be slightly above freezing (max 4°C on Sat afternoon, min 2°C on Sat night). Winds increasing (light winds from the WSW on Fri afternoon, near gales from the S by Mon morning).
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.