Forecasts:


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Mount Si, United States Weather Forecast

Weather Forecast Issued (local time): 9 am Friday 17 Nov 2017
  Days 0-3 Mount Si Weather Summary: Heavy rain (total 23mm) on Sun afternoon. Becoming colder with heavy fall of snow, heaviest during Sun night. Freeze-thaw conditions (max 2°C on Sun morning, min -3°C on Fri morning). Winds decreasing (stormy winds from the SSW on Sun morning, calm by Sun night). Days 3-6 Mount Si Weather Summary: Heavy rain (total 110mm), heaviest during Tue night. Freeze-thaw conditions (max 11°C on Wed night, min -2°C on Mon morning). Winds increasing (calm on Mon night, gales from the SW by Wed night).
Friday 17 Saturday 18 Sunday 19 Monday 20 Tuesday 21 Wednesday 22
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
snow showers
partially cloudy
partially cloudy
clear
partially cloudy
snow showers
light snow
heavy snow
clear
clear
clear
partially cloudy
heavy rain
heavy rain
heavy rain
moderate rain
rain showers
Wind
km/h
35 WSW35
30 WSW30
30 WSW30
15 SSW15
15 S15
35 SSW35
65 SSW65
70 SW70
25 WSW25
10 NNW10
10 NNW10
5 SSE5
15 SSE15
30 SSE30
55 SW55
45 SW45
45 SSW45
60 SW60
Summary light snow snow shwrs some clouds some clouds clear some clouds snow shwrs light snow heavy snow clear clear clear some clouds heavy rain heavy rain heavy rain mod. rain rain shwrs
Snow cm 1 1 - - - - 1 5 16 - - - - - - - - -
Rain mm - - - - - - 7 16 - - - - - 15 49 11 9 16
High °C -3 -2 -1 1 1 1 2 2 2 -2 -2 2 7 7 9 10 10 11
Low °C -3 -2 -2 0 1 1 2 1 -2 -2 -2 -2 6 7 6 9 10 10
Chill °C -11 -9 -8 -3 -3 -5 -6 -6 -6 -6 -6 -1 4 3 5 6 6 7
Freezing level m 850 1000 1050 1250 1450 1650 1750 1800 1250 950 950 750 3100 3050 3000 3150 3100 3050
Mount Si freezing level scale
mountain backdrop Mount Si freezing level
Sunrise 7:13 - - 7:16 - - 7:16 - - 7:18 - - 7:20 - - 7:20 - -
Sunset - 4:28 - - 4:27 - - 4:25 - - 4:24 - - 4:23 - - 4:22 -

This table gives the weather forecast for Mount Si at the specific elevation of 1270 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Si. 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.