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 Sun afternoon. Temperatures will be below freezing (max -4°C on Sat afternoon, min -9°C on Mon morning). Winds decreasing (strong winds from the SSW on Sat night, light winds from the ENE by Sun night). Days 3-6 South Twin Sister Weather Summary: Mostly dry. Temperatures will be well below freezing (max -7°C on Mon night, min -9°C on Tue night). Wind will be generally light.
Fri Saturday 10 Sunday 11 Monday 12 Tuesday 13 Wednesday 14 Thu
PM night AM PM night AM PM night AM PM night AM PM night AM PM night AM
See all weather maps
T washington.wind.30.cc23
T washington.wind.54.cc23
T washington.wind.78.cc23
T washington.wind.102.cc23
T washington.wind.126.cc23
 
moderate snow
heavy snow
moderate snow
heavy snow
heavy snow
heavy snow
heavy snow
snow showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Wind
(km/h)
15 SSE15
15 SSW15
15 SSE15
20 SSE20
25 S25
20 SW20
20 WSW20
10 N10
5 E5
10 E10
10 E10
10 E10
10 ENE10
5 ESE5
5 SSW5
0 SW0
5 NNE5
10 NE10
Summary mod. snow heavy snow mod. snow heavy snow heavy snow heavy snow heavy snow snow shwrs clear clear clear clear clear clear clear clear clear clear
Snow (cm) 6 20 6 13 20 15 19 8 - - - - - - - - - -
Rain (mm) - - - - - - - - - - - - - - - - - -
High °C -5 -5 -5 -4 -4 -4 -5 -5 -9 -8 -7 -8 -7 -7 -9 -9 -9 -8
Low °C -5 -6 -5 -5 -4 -5 -5 -8 -9 -8 -8 -8 -7 -9 -9 -9 -9 -9
Chill °C -11 -9 -11 -11 -11 -10 -11 -8 -12 -12 -12 -13 -11 -10 -9 -9 -9 -13
Freezing level (m) 500 300 550 650 800 800 750 0 0 0 0 0 0 0 0 0 0 0
South Twin Sister freezing level scale
mountain backdrop South Twin Sister freezing level
Sunrise - - 7:50 - - 7:50 - - 7:52 - - 7:52 - - 7:54 - - 7:54
Sunset 4:10 - - 4:10 - - 4:10 - - 4:10 - - 4:10 - - 4:12 - -

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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