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Mount Si, United States Weather Forecast

Weather Forecast Issued (local time): 4 am Wednesday 16 Apr 2014
  Days 0-3 Mount Si Weather Summary: A dusting of snow. Milder later with heavy rain (total 22mm) on Thu morning. Freeze-thaw conditions (max 4°C on Wed afternoon, min -3°C on Thu night). Winds decreasing (strong winds from the SW on Thu night, light winds from the SW by Fri night). Days 3-6 Mount Si Weather Summary: Moderate rain (total 10mm) heaviest on Sat afternoon, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 5°C on Sat afternoon, min -1°C on Sun morning). Winds decreasing (strong winds from the SW on Sat night, light winds from the WNW by Mon night).
Wednesday 16 Thursday 17 Friday 18 Saturday 19 Sunday 20 Monday 21
AM PM night AM PM night AM PM night AM PM night AM PM night AM PM night
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light snow
light rain
light rain
light rain
moderate rain
rain showers
partially cloudy
clear
partially cloudy
partially cloudy
light rain
snow showers
partially cloudy
clear
clear
rain showers
light snow
partially cloudy
Wind
(km/h)
25 WSW25
25 WSW25
25 SW25
20 SW20
35 SW35
40 WSW40
15 SW15
10 WSW10
10 SW10
30 S30
40 SW40
40 SW40
10 SSW10
10 SW10
15 SSE15
15 SSE15
15 WSW15
10 W10
Summary light snow light rain light rain light rain mod. rain rain shwrs some clouds clear some clouds some clouds light rain snow shwrs some clouds clear clear rain shwrs light snow some clouds
Snow (cm) 1 - - - - - - - - - - 1 - - - - 2 -
Rain (mm) 1 2 5 5 6 3 - - - - 5 4 - - - 1 - -
High °C 2 4 4 4 3 3 -2 1 2 4 5 3 1 3 4 3 2 0
Low °C 2 3 4 4 3 -3 -3 0 0 3 4 0 -1 3 3 2 2 -1
Chill °C -3 -1 0 0 -2 -4 -7 -2 -1 -1 0 -4 -2 1 0 -1 -2 -5
Freezing level (m) 1650 1900 2150 1900 1700 900 1050 1350 1700 2050 2000 1250 1400 1700 1850 1600 1500 1200
Mount Si freezing level scale
mountain backdrop Mount Si freezing level
Sunrise 6:16 - - 6:13 - - 6:11 - - 6:09 - - 6:07 - - 6:07 - -
Sunset - 19:58 - - 19:59 - - 20:00 - - 20:01 - - 20:02 - - 20:05 -

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.

 

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