Mount St Helens, Mount Saint Helens

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South Sister Volcano, United States Weather Forecast

Weather Forecast Issued (local time): 4 pm Thursday 19 Oct 2017
  Days 0-3 South Sister Volcano Weather Summary: A heavy fall of snow, heaviest during Thu night. Becoming milder with heavy rain (total 69mm) on Sat morning. Freeze-thaw conditions (max 8°C on Thu afternoon, min -2°C on Fri night). Winds increasing (light winds from the SW on Fri night, near gales from the WSW by Sat night). Days 3-6 South Sister Volcano Weather Summary: Light rain (total 4mm), mostly falling on Sun afternoon. Very mild (max 18°C on Tue afternoon, min 6°C on Sun night). Wind will be generally light.
Thu Friday 20 Saturday 21 Sunday 22 Monday 23 Tuesday 24 Wed
PM night AM PM night AM PM night AM PM night AM PM night AM PM night AM
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T oregon.wind.30.cc23
T oregon.wind.54.cc23
T oregon.wind.78.cc23
T oregon.wind.102.cc23
T oregon.wind.126.cc23
 
moderate rain
moderate snow
moderate snow
moderate snow
moderate snow
heavy rain
heavy rain
rain showers
light rain
light rain
light rain
partially cloudy
clear
clear
clear
clear
clear
clear
Wind
km/h
30 WSW30
30 WSW30
25 WSW25
30 W30
15 SW15
25 WSW25
55 WSW55
55 WSW55
40 WSW40
25 W25
10 W10
5 SE5
5 ENE5
10 ESE10
10 ESE10
10 ESE10
10 WSW10
15 W15
Summary mod. rain mod. snow mod. snow mod. snow mod. snow heavy rain heavy rain rain shwrs light rain light rain light rain some clouds clear clear clear clear clear clear
Snow cm - 6 7 6 6 - - - - - - - - - - - - -
Rain mm 10 5 - - - 34 16 2 2 2 2 - - - - - - -
High °C 8 3 0 0 -1 4 6 7 7 7 7 11 15 10 14 18 13 15
Low °C 6 0 0 -1 -2 3 5 6 7 7 6 6 14 9 8 18 11 9
Chill °C 4 -2 -6 -6 -7 -1 0 1 2 3 4 11 15 9 13 18 13 14
Freezing level m 2500 1500 1450 1400 1250 3050 2800 2900 3150 3150 3450 3900 4250 4500 4650 4700 4500 4150
South Sister Volcano freezing level scale
mountain backdrop South Sister Volcano freezing level
Sunrise - - 7:26 - - 7:28 - - 7:30 - - 7:31 - - 7:33 - - 7:33
Sunset 6:15 - - 6:15 - - 6:13 - - 6:10 - - 6:09 - - 6:07 - -

This table gives the weather forecast for South Sister Volcano at the specific elevation of 1500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Sister Volcano. 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 Oregon.