Sun Valley, Idaho Weather Conditions

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Current Conditions

  • 25°
  • Partly Cloudy
  • Wind: Calm
  • Humidity: 81%
  • Visibility: N/A
  • Dew Point: 20°
  • Pressure: 30.22 in. +

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Next 12 Hours

3  am
6  am
9  am
12  pm
3  pm
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
34°
28°
30°
45°
55°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Chance of Rain
  • High: 55 °
  • Low: 32 °
  • Chance of Rain
  • Tuesday
  • Snow Showers
  • High: 45 °
  • Low: 19 °
  • Snow Showers
  • Wednesday
  • Chance of Snow
  • High: 37 °
  • Low: 19 °
  • Chance of Snow
  • Thursday
  • Chance of Snow
  • High: 43 °
  • Low: 27 °
  • Chance of Snow
  • Friday
  • Chance Rain
  • High: 48 °
  • Low: 27 °
  • Chance Rain

Forecast for Sun Valley, Idaho

Updated: 3:00 AM MDT on April 21, 2014

  • Monday

    Partly cloudy. High of 55F. Winds from the SSE at 5 to 15 mph. Chance of rain 20%.

  • Monday Night

    Mostly cloudy with a chance of rain. Low of 32F. Winds from the South at 5 to 10 mph. Chance of rain 30%.

  • Tuesday

    Overcast with a chance of a thunderstorm and rain showers, then snow showers and a chance of a thunderstorm in the afternoon. High of 45F. Winds from the South at 5 to 10 mph. Chance of precipitation 80% .

  • Tuesday Night

    Overcast with snow showers in the evening, then mostly cloudy with a chance of snow. Fog overnight. Low of 19F with a windchill as low as 9F. Winds from the WSW at 5 to 15 mph. Chance of snow 50% with accumulations up to 2 in. possible.

  • Wednesday

    Mostly cloudy with a chance of snow. High of 37F. Winds from the WSW at 5 to 10 mph. Chance of snow 30% with accumulations up to 1 in. possible.

  • Wednesday Night

    Overcast with a chance of snow. Fog overnight. Low of 19F. Winds from the WSW at 5 to 10 mph. Chance of snow 40% with accumulations up to 2 in. possible.

  • Thursday

    Overcast with a chance of snow and rain showers, then a chance of snow and a chance of rain in the afternoon. Fog early. High of 43F. Winds from the SW at 5 to 10 mph. Chance of snow 50%.

  • Thursday Night

    Overcast with a chance of snow after midnight. Low of 27F. Winds less than 5 mph. Chance of snow 20% with accumulations up to 1 in. possible.

  • Friday

    Overcast with a chance of rain. Fog early. High of 48F. Winds from the SSE at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.

  • Friday Night

    Overcast with a chance of snow. Low of 27F. Winds less than 5 mph. Chance of snow 50% with accumulations up to 1 in. possible.

  • Saturday

    Overcast with a chance of snow. Fog early. High of 37F. Winds from the South at 5 to 10 mph. Chance of snow 50%.

  • Saturday Night

    Partly cloudy with a chance of snow. Low of 18F. Winds from the NW at 5 to 10 mph. Chance of snow 40%.

  • Sunday

    Mostly cloudy. High of 39F. Winds from the NW at 5 to 10 mph.

  • Sunday Night

    Partly cloudy. Fog overnight. Low of 19F. Winds less than 5 mph.

  • Monday

    Partly cloudy. Fog early. High of 61F. Winds less than 5 mph.

  • Monday Night

    Partly cloudy. Fog overnight. Low of 21F. Winds less than 5 mph.

  • Tuesday

    Clear. Fog early. High of 50F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 23F. Winds less than 5 mph.

  • Wednesday

    Clear. Fog early. High of 52F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Fog overnight. Low of 27F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. Fog early. High of 50F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 27F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: MesoWest HYNDMAN ID US SNOTEL, Sun Valley, ID

Updated: 2:00 AM MDT

Temperature: 32 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: MesoWest LOST-WOOD DIVIDE ID US SNOTEL, Sun Valley, ID

Updated: 12:00 AM MDT

Temperature: 30 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: MesoWest CHOCOLATE GULCH ID US SNOTEL, Obsidian, ID

Updated: 2:00 AM MDT

Temperature: 32 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: MesoWest STICKNEY MILL ID US SNOTEL, Sun Valley, ID

Updated: 12:00 AM MDT

Temperature: 29 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: MesoWest BEAR CANYON ID US SNOTEL, Mackay, ID

Updated: 12:00 AM MDT

Temperature: 28 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: RAWS COPPER BASIN ID US, Mackay, ID

Updated: 1:50 AM MDT

Temperature: 24 °F Dew Point: 15 °F Humidity: 67% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 24 °F Graphs

Location: Sun Valley Resort, Sun Valley, ID

Updated: 3:36 AM MDT

Temperature: 29.5 °F Dew Point: 16 °F Humidity: 57% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: MesoWest GALENA ID US SNOTEL, Ketchum, ID

Updated: 12:00 AM MDT

Temperature: 33 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: HADS KETCHUM RANGER STATION NEAR KETC ID US USBR, Ketchum, ID

Updated: 2:45 AM MDT

Temperature: 37 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: MesoWest SUN VALLEY-BALD MTN (1 HOUR) ID US SNOWNET, Ketchum, ID

Updated: 3:00 AM MDT

Temperature: 34 °F Dew Point: 3 °F Humidity: 26% Wind: NE at 5 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: East Fork, Hailey, ID

Updated: 3:36 AM MDT

Temperature: 29.8 °F Dew Point: 17 °F Humidity: 59% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: MesoWest DOLLARHIDE SUMMIT ID US SNOTEL, Fairfield, ID

Updated: 2:00 AM MDT

Temperature: 40 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: HADS HAILEY RANGER STATION AT HAILEY ID US USBR, Hailey, ID

Updated: 2:45 AM MDT

Temperature: 41 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.01 in Windchill: 41 °F Graphs

Location: MesoWest GALENA SUMMIT ID US SNOTEL, Ketchum, ID

Updated: 12:00 AM MDT

Temperature: 32 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: MesoWest Titus Study Plot ID US AVALANCHE, Ketchum, ID

Updated: 2:00 AM MDT

Temperature: 31 °F Dew Point: - Humidity: - Wind: North at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: MesoWest SMILEY MOUNTAIN ID US SNOTEL, Mackay, ID

Updated: 12:00 AM MDT

Temperature: 31 °F Dew Point: - Humidity: - Wind: South at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: MesoWest TITUS PEAK ID US SNOWNET, Ketchum, ID

Updated: 2:00 AM MDT

Temperature: 33 °F Dew Point: 5 °F Humidity: 30% Wind: ENE at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Pocatello Idaho 
230 am MDT Monday Apr 21 2014 


Short term...today through Thursday. Weather will become 
increasingly unsettled as the upper pattern becomes amplified. Infrared/WV 
imagery showing moisture currently stalling over the Washington/or 
coast...but should begin to advance further inland later today as it 
is pushed by an upper shortwave. Models are supporting the idea that 
the trough could become negatively tilted as it moves inland and 
will likely contribute to surface cyclogenesis early Tuesday 
morning. Models are pushing a surface cold front through the area by 
around midday Tuesday with a strong pressure gradient throughout the 
day and extending into Wednesday. Strong cold-air advection will 
help lower the snow levels to the valley floor by Wednesday morning. 
By then...most of the precipitation will be focused over the 
mountains. Winds will also be a concern starting tomorrow afternoon 
as the front passes. GFS is suggesting much stronger winds than the 
NAM...however the precipitation may help to mitigate wind speeds. Afternoon 
convection will also be a concern as lift and instability peak along 
the frontal boundary. Keeping slight chance of thunder in the 
forecast. Hinsberger 


Long term...Thursday through Monday night. Brief upper ridging on 
Thursday gives way to a new upper trough moving into the Pacific northwest. Precipitation 
chances increase over the central mountains Thursday morning...then over the 
upper snake and eastern Highlands Thursday afternoon. Precipitation spreads over the 
rest of the area through Friday as the upper trough moves onshore. The upper 
system deepens over the Great Basin on Sat...which will further 
increase the threat of precipitation. Snow levels remain above 7500 feet through 
Sat...but cooler nighttime temperatures may allow snow to mix with rain at 
lower elevations. Not expecting any snow accumulation in the 
valleys. By sun...the European model (ecmwf) and GFS depart. The GFS develops a more 
typical split flow pattern...while the European model (ecmwf) maintains a loose negative 
tilt trough. The GFS solution would suggest a drying trend on sun. 
Will lower precipitation chances on sun...but not entirely while respecting 
the European model (ecmwf) solution. By Monday...both models show ridging over the 
west...with the GFS being more progressive. Will further reduce 
precipitation chances. By Tuesday morning...both models show major upper ridging 
over the west. Will strip most precipitation out of the forecast area Monday 
night. Hedges 
&& 


Aviation...VFR conditions expected today and tonight...but an 
approaching storm system will bring middle cloud ceilings into the area 
tonight...with the threat of rain/snow mix in the central mountains 
southerly winds are expected to pick up a little tonight at kpih and 
kbyi. Hedges 


Hydrology...a moisture-laden storm system will move across the 
region Tuesday and Wednesday dumping precipitation on a ripening 
snowpack. Warm daytime highs will also help contribute to snowmelt. 
Only in-bank rises should occur in rivers as a result of the runoff. 
We do not anticipate any flooding at this time. Hinsberger 
&& 


Pih watches/warnings/advisories...none. 
&& 


$$ 



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