– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Thu 03 Apr Local TimeUpdates in: 5hr 11min 20sUpdate imminent
Issued: 10 pm Thu 03 Apr Local Time
Updates in:
Update imminent 5hr 11min 20s
Issued: 10 pm Thu 03 Apr Local Time
Updates in:
Update imminent 5hr 11min 20s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 6mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 7°C on Sat night, min 0°C on Thu night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 7mm) on Sun night. Becoming colder with heavy fall of snow, heaviest during Mon night. Freeze-thaw conditions (max 3°C on Sun night, min -3°C on Mon night). Winds decreasing (fresh winds from the S on Tue afternoon, light winds from the SSE by Wed afternoon). | ||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | |  | |  |  |  | |  |  |  | | | | | | |
some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | some clouds | light rain | mod. rain | light snow | cloudy | mod. snow | mod. snow | light snow | light snow | mod. snow | some clouds | cloudy | light snow | |
mph | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | 2 | — | 2 | 4 | 1 | 2 | 4 | — | — | 1 | |
— | — | — | — | — | — | — | 0.03 | 0.2 | 0.3 | — | — | — | — | — | — | — | — | — | |
max°F | 34 | 36 | 41 | 41 | 41 | 43 | 45 | 41 | 39 | 37 | 32 | 30 | 28 | 28 | 30 | 28 | 28 | 32 | 34 |
min°F | 32 | 34 | 39 | 41 | 41 | 43 | 43 | 39 | 37 | 32 | 32 | 28 | 27 | 28 | 28 | 27 | 27 | 30 | 32 |
28 | 34 | 39 | 37 | 36 | 39 | 39 | 32 | 30 | 21 | 25 | 19 | 14 | 18 | 16 | 16 | 18 | 25 | 23 | |
4900 | 6200 | 8000 | 8400 | 8000 | 8400 | 8900 | 7500 | 7100 | 4900 | 4800 | 4100 | 3600 | 3800 | 4100 | 3900 | 3900 | 4900 | 4600 | |
Cloud base (ft) | 5200 | 21800 | 6900 | 20000 | 19500 | 10000 | 7700 | 5900 | 2100 | 1800 | 3000 | 1800 | 1800 | 1800 | 1800 | 2000 | 2000 | 2500 | 2000 |
 | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:28 | — | — |
 | — | — | 7:42 | — | — | 7:44 | — | — | 7:45 | — | — | 7:46 | — | — | 7:47 | — | — | 7:50 | — |
South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 6mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 7°C on Sat night, min 0°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 7mm) on Sun night. Becoming colder with heavy fall of snow, heaviest during Mon night. Freeze-thaw conditions (max 3°C on Sun night, min -3°C on Mon night). Winds decreasing (fresh winds from the S on Tue afternoon, light winds from the SSE by Wed afternoon).
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.
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