Sun Valley, Idaho Weather Conditions

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Current Conditions

  • 43°
  • Partly Cloudy
  • Wind: Variable 4 mph
  • Humidity: 51%
  • Visibility: N/A
  • Dew Point: 26°
  • Pressure: 30.19 in. +
  • Heat Index: 41

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Next 12 Hours

5  pm
8  pm
11  pm
2  am
5  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
37°
41°
37°
36°
37°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Partly Cloudy
  • High: 48 °
  • Low: 30 °
  • Partly Cloudy
  • Thursday
  • Chance of Snow
  • High: 41 °
  • Low: 23 °
  • Chance of Snow
  • Friday
  • Snow
  • High: 41 °
  • Low: 25 °
  • Snow
  • Saturday
  • Chance of Snow
  • High: 36 °
  • Low: 23 °
  • Chance of Snow
  • Sunday
  • Clear
  • High: 30 °
  • Low: -4 °
  • Clear

Forecast for Sun Valley, Idaho

Updated: 2:00 PM MST on November 26, 2014

  • Wednesday

    Partly cloudy. High of 46F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 30F. Winds less than 5 mph.

  • Thursday

    Partly cloudy with a chance of snow and rain showers, then a chance of snow and a chance of rain in the afternoon. High of 41F. Winds less than 5 mph. Chance of snow 30%.

  • Thursday Night

    Mostly cloudy with a chance of snow. Fog overnight. Low of 23F. Winds from the South at 5 to 15 mph. Chance of snow 40%.

  • Friday

    Mostly cloudy with a chance of snow and a chance of rain in the morning, then overcast with snow. High of 41F. Breezy. Winds from the SSW at 15 to 20 mph. Chance of snow 40%.

  • Friday Night

    Mostly cloudy with a chance of snow in the evening, then overcast with a chance of snow. Low of 25F with a windchill as low as 18F. Winds from the SSW at 10 to 15 mph. Chance of snow 70% with accumulations up to 4 in. possible.

  • Saturday

    Overcast with a chance of snow and rain showers, then a chance of snow and a chance of rain in the afternoon. High of 36F with a windchill as low as 14F. Breezy. Winds from the SW at 10 to 20 mph. Chance of snow 70% with accumulations up to 2 in. possible.

  • Saturday Night

    Overcast. Low of 23F. Winds less than 5 mph.

  • Sunday

    Clear. High of 30F. Winds less than 5 mph.

  • Sunday Night

    Clear with a chance of snow. Fog overnight. Low of -4F with a windchill as low as -17F. Winds from the South at 5 to 10 mph. Chance of snow 50% with accumulations up to 2 in. possible.

  • Monday

    Overcast with a chance of snow. Fog early. High of 28F with a windchill as low as -9F. Winds from the SSW at 10 to 15 mph. Chance of snow 50% with accumulations up to 1 in. possible.

  • Monday Night

    Partly cloudy with a chance of snow. Fog overnight. Low of 21F with a windchill as low as 10F. Winds from the SSW at 10 to 15 mph. Chance of snow 60% with accumulations up to 3 in. possible.

  • Tuesday

    Clear with a chance of snow. Fog early. High of 32F. Winds from the SSW at 5 to 10 mph. Chance of snow 20%.

  • Tuesday Night

    Partly cloudy. Fog overnight. Low of 10F. Winds less than 5 mph.

  • Wednesday

    Overcast with a chance of snow. Fog early. High of 32F. Winds less than 5 mph. Chance of snow 50% with accumulations up to 1 in. possible.

  • Wednesday Night

    Overcast. Fog overnight. Low of -9F. Winds less than 5 mph.

  • Thursday

    Overcast with a chance of snow. Fog early. High of 30F. Winds less than 5 mph. Chance of snow 20% with accumulations up to 1 in. possible.

  • Thursday Night

    Mostly cloudy. Fog overnight. Low of 3F. Winds less than 5 mph.

  • Friday

    Partly cloudy. Fog early. High of 25F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 3F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. Fog early. High of 25F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 3F. Winds less than 5 mph.

  • Sunday

    Clear. High of 25F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: RAWS COPPER BASIN ID US, Mackay, ID

Updated: 3:50 PM MST

Temperature: 45 °F Dew Point: 22 °F Humidity: 40% Wind: WNW at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: RAWS NORTH FORK ID US, Ketchum, ID

Updated: 3:39 PM MST

Temperature: 50 °F Dew Point: 26 °F Humidity: 39% Wind: SE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Sun Valley Resort, Sun Valley, ID

Updated: 4:51 PM MST

Temperature: 45.3 °F Dew Point: 33 °F Humidity: 61% Wind: Calm Pressure: 29.54 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: RAWS OHIO GULCH ID US, Hailey, ID

Updated: 3:44 PM MST

Temperature: 48 °F Dew Point: 32 °F Humidity: 53% Wind: South at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

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

Updated: 3:45 PM MST

Temperature: 48 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Meadowbrook Road, Hailey, ID

Updated: 4:50 PM MST

Temperature: 42.4 °F Dew Point: 33 °F Humidity: 69% Wind: North at - Pressure: 30.30 in Hourly Precipitation: - Windchill: 42 °F Graphs

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

Updated: 4:00 PM MST

Temperature: 36 °F Dew Point: 17 °F Humidity: 46% Wind: WNW at 10 mph Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: East Fork, Hailey, ID

Updated: 4:51 PM MST

Temperature: 37.8 °F Dew Point: 32 °F Humidity: 78% Wind: Calm Pressure: 24.61 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Deer field, Hailey, ID

Updated: 3:35 PM MST

Temperature: 57.7 °F Dew Point: 34 °F Humidity: 41% Wind: South at 3.1 mph Pressure: 24.86 in Hourly Precipitation: - Windchill: - Graphs

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

Updated: 3:45 PM MST

Temperature: 49 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Pocatello Idaho 
152 PM MST Wednesday Nov 26 2014 


Short term...tonight through Saturday. Upper ridging over the 
western US today will flatten to zonal flow by Thursday night. This 
will allow some Pacific moisture to stream into Idaho...setting off a few 
show showers in the central mountains on Thursday. A major upper wave over 
British Columbia will drop southward into the Pacific northwest by Sat morning. This will 
allow the polar front to slowwly sag southward...forcing precipitation to 
become more widespread Friday through Sat. Most of the precipitation will be in 
the central mountains and upper snake Highlands on Friday...but over the 
entire forecast area by Sat. Looks like a substantial flow of Pacific 
moisture into the region. Warm temperatures will keep snow confined to 
the mountains where significant accumulations are expected in the 
central mountains/upper snake Highlands Friday and Sat. The lower 
elevations... including the Snake River Plain should see rain Friday 
night and Sat. Temperatures will remain mild Thursday through Sat. Hedges 


Long term...Sat night through next Wednesday night. Winter storm wraps up 
during this time. Major change is the northerly wind that brings in 
polar air and much colder temperatures for sun and Sun night. Both 
GFS and the European model (ecmwf) have the same scenario...with the exception that 
the European model (ecmwf) brings in much colder air and a drier solution for the 
part of the forecast after Sun night. This is because of a split 
that develops in the upper level flow in the eastern Pacific that 
merges over or near Idaho. The GFS keeps southern Idaho on the warm 
side with a closed low off the California coast pumping up warm 
moist air for more precipitation and much warmer temperaturs than 
sun. The European model (ecmwf) keeps eastern Idaho on the cold side...which has less 
moisture available and the colder air. Which solution is correct is 
the main forecast problem for this period. Lately the GFS has been 
performing better...but both frankly have been scoring low in the 
verification department when it comes to temperatures. Have decided 
to leave alone and wait for some sort of consensus to develop. 
Messick 


&& 


Aviation...pressure gradients over eastern Idaho are finally 
relaxing a little bit and winds should not gust as strong. Dry air 
behind last nights front will keep skies clear and the elevated wind 
should prevent any more fog or stratus. Ceiling develops during Thursday 
morning...lowers Thursday night...but no precipitation expected until 
late Friday night. Messick 


&& 


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


$$ 



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