Forecasts:

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Mount Si, United States Weather Forecast

Weather Forecast Issued (local time): 9 am Friday 19 Dec 2014
  Days 0-3 Mount Si Weather Summary: A light covering of new snow mostly falling on Fri night will be washed away by heavy rain (total 65mm) on Sat afternoon. Freeze-thaw conditions (max 6°C on Sat afternoon, min -1°C on Fri morning). Winds decreasing (stormy winds from the WSW on Sat night, light winds from the W by Sun night). Days 3-6 Mount Si Weather Summary: Mild with heavy rain (total 28mm), heaviest during Wed afternoon. Becoming colder with a moderate fall of snow heaviest on Wed afternoon. Freeze-thaw conditions (max 6°C on Tue morning, min -2°C on Wed night). Winds increasing (light winds from the W on Mon afternoon, strong winds from the SW by Tue night).
Friday 19 Saturday 20 Sunday 21 Monday 22 Tuesday 23 Wednesday 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
 
snow showers
partially cloudy
snow showers
moderate rain
heavy rain
heavy rain
heavy rain
light snow
partially cloudy
partially cloudy
clear
partially cloudy
partially cloudy
light rain
heavy rain
light rain
light snow
snow showers
Wind
(km/h)
30 SW30
25 SW25
25 SSE25
40 SW40
55 SW55
75 WSW75
55 W55
35 W35
25 WSW25
10 W10
5 W5
20 SW20
30 SW30
35 SW35
45 SW45
35 SW35
20 SSW20
35 W35
Summary snow shwrs some clouds snow shwrs mod. rain heavy rain heavy rain heavy rain light snow some clouds some clouds clear some clouds some clouds light rain heavy rain light rain light snow snow shwrs
Snow (cm) 1 - 4 - - - - 3 - - - - - - - - 4 5
Rain (mm) - - - 10 14 28 13 - - - - - - 5 11 5 7 -
High °C 0 0 2 4 6 6 4 2 1 0 2 4 6 6 6 4 3 -2
Low °C -1 0 1 3 5 4 3 1 -1 -1 1 3 5 6 5 4 -1 -2
Chill °C -7 -6 -5 -2 -1 -2 -3 -4 -5 -3 0 -1 1 1 1 -2 -1 -9
Freezing level (m) 1200 1200 1500 1850 2250 2050 1900 1550 1300 1200 1400 2050 2300 2300 2200 2050 1850 850
Mount Si freezing level scale
mountain backdrop Mount Si freezing level
Sunrise 7:50 - - 7:50 - - 7:50 - - 7:52 - - 7:52 - - 7:52 - -
Sunset - 16:16 - - 16:16 - - 16:17 - - 16:17 - - 16:19 - - 16:20 -

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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