Forecasts:

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South Twin Sister, United States Weather Forecast

Weather Forecast Issued (local time):
  Days 0-3 South Twin Sister Weather Summary: A heavy fall of snow, heaviest during Thu night. Temperatures will be below freezing (max -1°C on Fri afternoon, min -8°C on Wed morning). Wind will be generally light. Days 3-6 South Twin Sister Weather Summary: A light covering of new snow mostly falling on Sun afternoon. Freeze-thaw conditions (max 1°C on Sat morning, min -12°C on Mon night). Wind will be generally light.
Wednesday 7 Thursday 8 Friday 9 Saturday 10 Sunday 11 Monday 12
AM PM night AM PM night AM PM night AM PM night AM PM night AM PM night
See all weather maps
T washington.wind.12.cc23
T washington.wind.36.cc23
T washington.wind.60.cc23
T washington.wind.84.cc23
T washington.wind.108.cc23
T washington.wind.132.cc23
 
clear
clear
clear
partially cloudy
partially cloudy
heavy snow
heavy snow
moderate snow
snow showers
clear
partially cloudy
snow showers
light snow
light snow
partially cloudy
partially cloudy
partially cloudy
clear
Wind
(km/h)
10 ENE10
10 ENE10
10 ENE10
10 ENE10
10 ENE10
10 E10
10 E10
5 E5
5 ENE5
5 E5
5 SSE5
5 SE5
5 E5
10 ENE10
10 ENE10
5 ENE5
5 NE5
10 ENE10
Summary clear clear clear some clouds some clouds heavy snow heavy snow mod. snow snow shwrs clear some clouds snow shwrs light snow light snow some clouds some clouds some clouds clear
Snow (cm) - - - - - 17 11 8 3 - - 3 3 3 - - - -
Rain (mm) - - - - - - - - - - - - - - - - - -
High °C -4 -5 -8 -3 -4 -3 -2 -1 -1 1 0 -1 1 1 -2 -4 -6 -11
Low °C -8 -8 -8 -6 -4 -5 -2 -1 -3 -2 -1 -1 0 0 -6 -6 -9 -12
Chill °C -7 -9 -13 -7 -8 -7 -6 -3 -3 1 -2 -3 -1 -2 -6 -6 -9 -16
Freezing level (m) 0 0 0 0 0 0 0 250 100 0 550 350 500 600 0 0 0 0
South Twin Sister freezing level scale
mountain backdrop South Twin Sister freezing level
Sunrise 7:47 - - 7:48 - - 7:48 - - 7:50 - - 7:50 - - 7:52 - -
Sunset - 4:10 - - 4:10 - - 4:10 - - 4:10 - - 4:10 - - 4:10 -

This table gives the weather forecast for South Twin Sister at the specific elevation of 500 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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