– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Thu 22 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Thu 22 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Thu 22 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Temperatures will be below freezing (max -1°C on Fri night, min -4°C on Thu night). Wind will be generally light. | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Wed afternoon. Temperatures will be below freezing (max -1°C on Tue morning, min -6°C on Mon morning). Winds increasing (light winds from the S on Mon afternoon, near gales from the S by Wed morning). | ||||||||||||||||||
Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | ||||||||||||||
night | 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 | clear | clear | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | light snow | light snow | mod. snow | mod. snow | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 5 | 9 | 10 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -4 | -3 | -3 | -1 | -1 | -1 | -1 | -2 | -2 | -3 | -5 | -5 | -2 | -1 | -1 | -4 | -4 | -4 | -4 |
min °C | -4 | -3 | -3 | -3 | -1 | -1 | -2 | -2 | -2 | -4 | -6 | -5 | -5 | -1 | -1 | -4 | -4 | -4 | -5 |
-8 | -8 | -7 | -8 | -5 | -5 | -5 | -7 | -7 | -10 | -10 | -9 | -10 | -7 | -8 | -13 | -14 | -14 | -12 | |
1300 | 1650 | 1600 | 1700 | 1900 | 1800 | 1850 | 1800 | 1750 | 1550 | 1250 | 1100 | 1300 | 2000 | 2000 | 1500 | 1500 | 1400 | 1450 | |
Cloud base (m) | 8450 | 6200 | 8850 | 6750 | 5800 | 3300 | 950 | 750 | 5750 | 2600 | 600 | 650 | 600 | 600 | |||||
 | — | 7:48 | — | — | 7:47 | — | — | 7:46 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — |
 | — | — | 4:52 | — | — | 4:52 | — | — | 4:54 | — | — | 4:55 | — | — | 4:58 | — | — | 4:59 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Temperatures will be below freezing (max -1°C on Fri night, min -4°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed afternoon. Temperatures will be below freezing (max -1°C on Tue morning, min -6°C on Mon morning). Winds increasing (light winds from the S on Mon afternoon, near gales from the S by Wed morning).
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.