– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 30 May Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 30 May Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 30 May Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Very mild (max 15°C on Mon night, min 1°C on Sat afternoon). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 3mm) at first, then becoming colder with a dusting of snow on Fri morning. Freeze-thaw conditions (max 16°C on Tue afternoon, min -1°C on Fri morning). Wind will be generally light. | ||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | |  | | | |  | |  | | |  | |
rain shwrs | clear | clear | clear | clear | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | light rain | light rain | rain shwrs | light rain | rain shwrs | light rain | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
0.1 | — | — | — | — | — | — | — | — | — | — | 0.5 | 1.1 | 0.2 | 0.1 | 0.3 | 0.6 | |
max °C | 4 | 3 | 3 | 7 | 9 | 11 | 13 | 15 | 14 | 16 | 15 | 12 | 10 | 7 | 5 | 4 | 5 |
min °C | 1 | 2 | 2 | 6 | 8 | 10 | 12 | 14 | 14 | 16 | 14 | 10 | 8 | 5 | 4 | 4 | 0 |
-1 | 1 | 0 | 5 | 7 | 9 | 11 | 13 | 14 | 16 | 14 | 9 | 6 | 4 | 1 | 2 | -3 | |
2100 | 2000 | 2250 | 2700 | 2850 | 2900 | 3050 | 3100 | 3000 | 3250 | 3250 | 3200 | 2950 | 2550 | 2450 | 2250 | 1750 | |
Cloud base (m) | 750 | 1850 | 2250 | 5900 | 3550 | 3200 | 9150 | 5250 | 1850 | 850 | 750 | 650 | 800 | ||||
 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:07 | — | — | 5:07 | — | — |
 | — | 9:00 | — | — | 9:00 | — | — | 9:01 | — | — | 9:02 | — | — | 9:04 | — | — | 9:04 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 15°C on Mon night, min 1°C on Sat afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 3mm) at first, then becoming colder with a dusting of snow on Fri morning. Freeze-thaw conditions (max 16°C on Tue afternoon, min -1°C on Fri morning). Wind will be generally light.
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.