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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 Sun night. Temperatures will be below freezing (max -2°C on Mon morning, min -7°C on Tue night). Winds decreasing (fresh winds from the SSE on Sun night, calm by Mon afternoon). Days 3-6 South Twin Sister Weather Summary: A heavy fall of snow, heaviest during Wed morning. Temperatures will be well below freezing (max -7°C on Wed morning, min -9°C on Wed night). Wind will be generally light.
Sunday 19 Monday 20 Tuesday 21 Wednesday 22 Thursday 23 Friday 24
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
 
light snow
moderate snow
heavy snow
light snow
light snow
snow showers
partially cloudy
light snow
heavy snow
heavy snow
heavy snow
moderate snow
light snow
light snow
snow showers
partially cloudy
clear
clear
Wind
(km/h)
25 SSE25
20 SSE20
25 SSE25
10 ESE10
5 NE5
5 SW5
10 NNW10
15 W15
30 WSW30
15 WSW15
15 WSW15
5 WSW5
0 SSE0
5 W5
5 E5
10 ENE10
10 ENE10
5 ENE5
Summary light snow mod. snow heavy snow light snow light snow snow shwrs some clouds light snow heavy snow heavy snow heavy snow mod. snow light snow light snow snow shwrs some clouds clear clear
Snow (cm) 3 8 12 4 3 5 - 2 11 16 11 7 3 5 1 - - -
Rain (mm) - - - - - - - - - - - - - - - - - -
High °C -3 -3 -3 -2 -2 -3 -4 -4 -6 -7 -7 -7 -8 -8 -8 -8 -7 -7
Low °C -4 -3 -3 -3 -3 -3 -4 -5 -7 -7 -7 -9 -9 -8 -8 -8 -7 -8
Chill °C -9 -9 -10 -5 -2 -7 -8 -9 -14 -13 -13 -11 -8 -11 -8 -12 -11 -11
Freezing level (m) 850 1000 1000 1100 1150 950 850 900 400 500 550 0 200 400 0 0 500 0
South Twin Sister freezing level scale
mountain backdrop South Twin Sister freezing level
Sunrise 7:07 - - 7:05 - - 7:05 - - 7:03 - - 7:01 - - 6:58 - -
Sunset - 5:35 - - 5:37 - - 5:37 - - 5:39 - - 5:40 - - 5:43 -

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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