– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Tue 25 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Tue 25 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Tue 25 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummarySome drizzle, heaviest during Thu afternoon. Very mild (max 15°C on Tue morning, min 4°C on Thu afternoon). Winds decreasing (fresh winds from the S on Wed night, light winds from the W by Thu night). | Days 4–6 Weather SummaryMostly dry. Very mild (max 10°C on Sun afternoon, min 4°C on Fri morning). Wind will be generally light. | |||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  |  |  |  | | | | | | | | | | |
clear | clear | clear | clear | clear | some clouds | light rain | rain shwrs | rain shwrs | clear | clear | some clouds | clear | rain shwrs | clear | clear | clear | clear | |
Cloud base (m) | 9300 | 8800 | 4750 | 9450 | 6800 | 600 | 800 | 2500 | 2050 | 2250 | 2300 | 2200 | 6750 | 6150 | ||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | 0.4 | 1.1 | 0.1 | — | — | — | — | 0.1 | — | — | — | — |
max °C | 15 | 15 | 14 | 11 | 11 | 10 | 5 | 5 | 5 | 5 | 6 | 6 | 4 | 7 | 7 | 8 | 10 | 10 |
min °C | 14 | 15 | 11 | 10 | 11 | 6 | 5 | 4 | 5 | 4 | 6 | 4 | 4 | 6 | 7 | 7 | 9 | 7 |
chill °C | 13 | 14 | 8 | 7 | 8 | 3 | 1 | 0 | 2 | 1 | 3 | 1 | 1 | 5 | 6 | 6 | 7 | 4 |
Freezing level m | 4100 | 4150 | 4000 | 3950 | 3900 | 3400 | 3200 | 2800 | 2900 | 3150 | 3050 | 2800 | 2950 | 3350 | 3800 | 3800 | 3800 | 3700 |
 | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | 7:58 | — | — | 7:55 | — | — | 7:53 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Thu afternoon. Very mild (max 15°C on Tue morning, min 4°C on Thu afternoon). Winds decreasing (fresh winds from the S on Wed night, light winds from the W by Thu night).
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 10°C on Sun afternoon, min 4°C on Fri morning). 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.