Forecasts:


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Mount Si, United States Weather Forecast

Weather Forecast Issued (local time): 10 pm Friday 20 Apr 2018
  Days 0-3 Mount Si Weather Summary: A dusting of new snow. Freeze-thaw conditions (max 11°C on Mon afternoon, min -2°C on Sat morning). Winds decreasing (near gales from the WSW on Fri night, light winds from the N by Sun afternoon). Days 3-6 Mount Si Weather Summary: Mostly dry. Very mild (max 18°C on Thu afternoon, min 9°C on Mon night). Winds decreasing (fresh winds from the ESE on Mon night, calm by Thu afternoon).
Fri Saturday 21 Sunday 22 Monday 23 Tuesday 24 Wednesday 25 Thu
night AM PM night AM PM night AM PM night AM PM night AM PM night AM PM
See all weather maps
T washington.wind.18.cc23
T washington.wind.42.cc23
T washington.wind.66.cc23
T washington.wind.90.cc23
T washington.wind.114.cc23
 
snow showers
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Wind
km/h
40 SSW40
25 WSW25
15 NNW15
20 NNW20
10 N10
10 NNW10
10 ENE10
15 ESE15
15 E15
35 ESE35
25 ESE25
10 ENE10
5 N5
15 E15
10 E10
20 ESE20
20 ESE20
5 ENE5
Summary snow shwrs some clouds some clouds some clouds some clouds some clouds clear clear clear clear clear clear clear clear clear clear clear clear
Snow cm 3 - - - - - - - - - - - - - - - - -
Rain mm - - - - - - - - - - - - - - - - - -
High °C 4 -2 1 0 0 2 3 7 11 9 11 14 13 13 16 16 16 18
Low °C 0 -2 0 -1 -1 1 2 5 10 9 10 14 11 12 15 14 14 18
Chill °C 0 -10 -3 -4 -3 -1 0 4 9 6 8 13 13 12 16 15 15 18
Freezing level m 1400 1100 1350 1100 1200 1500 2000 2550 3200 3300 3400 3400 3350 3450 3500 3700 3700 3650
Mount Si freezing level scale
mountain backdrop Mount Si freezing level
Sunrise - 6:07 - - 6:05 - - 6:03 - - 6:01 - - 6:00 - - 5:58 -
Sunset - - 8:04 - - 8:06 - - 8:07 - - 8:07 - - 8:09 - - 8:10

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.