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South Twin Sister, United States Weather Forecast

Weather Forecast Issued (local time): 4 am Saturday 21 Oct 2017
  Days 0-3 South Twin Sister Weather Summary: A heavy fall of snow, heaviest during Sat afternoon. Becoming milder with heavy rain (total 65mm) on Sat night. Freeze-thaw conditions (max 9°C on Mon night, min 0°C on Sat morning). Winds decreasing (gales from the W on Sat night, calm by Mon night). Days 3-6 South Twin Sister Weather Summary: Heavy rain (total 38mm), heaviest during Wed morning. Very mild (max 14°C on Fri morning, min 4°C on Wed afternoon). Winds increasing (calm on Tue afternoon, fresh winds from the WSW by Wed morning).
Saturday 21 Sunday 22 Monday 23 Tuesday 24 Wednesday 25 Thursday 26
AM PM night AM PM night AM PM night AM PM night AM PM night AM PM night
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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
 
moderate snow
moderate snow
light snow
light snow
moderate snow
snow showers
partially cloudy
partially cloudy
partially cloudy
clear
clear
partially cloudy
heavy rain
moderate rain
partially cloudy
clear
clear
clear
Wind
km/h
25 SSE25
30 SSE30
65 W65
40 WSW40
40 WSW40
10 WSW10
5 SSE5
0 W0
5 WNW5
10 WNW10
5 W5
15 SW15
35 SW35
10 WSW10
10 NE10
5 NNE5
10 NE10
10 ENE10
Summary mod. snow mod. snow light snow light snow mod. snow snow shwrs some clouds some clouds some clouds clear clear some clouds heavy rain mod. rain some clouds clear clear clear
Snow cm 7 6 5 5 6 2 - - - - - - - - - - - -
Rain mm - 22 43 - - - - - - - - - 30 8 - - - -
High °C 1 2 5 0 1 2 3 7 9 10 11 11 8 6 7 8 9 13
Low °C 0 1 1 0 1 1 2 5 7 9 11 8 6 4 4 7 8 10
Chill °C -5 -4 -1 -8 -6 -1 1 7 8 9 11 10 4 1 5 7 7 12
Freezing level m 1750 2250 2150 1550 1650 1800 2350 2900 3700 4000 4050 3550 3150 2550 3450 3700 4000 4250
South Twin Sister freezing level scale
mountain backdrop South Twin Sister freezing level
Sunrise 7:37 - - 7:37 - - 7:39 - - 7:41 - - 7:43 - - 7:43 - -
Sunset - 6:07 - - 6:05 - - 6:02 - - 6:00 - - 5:59 - - 5:58 -

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.