Sun Valley, Idaho Weather Conditions

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Winter Storm Warning View All Alerts

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Current Conditions

  • 21°
  • Partly Cloudy
  • Wind: Calm
  • Humidity: 85%
  • Visibility: N/A
  • Dew Point: 17°
  • Pressure: 30.04 in. -

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Next 12 Hours

8  am
11  am
2  pm
5  pm
8  pm
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Fog
Fog
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
14°
27°
28°
25°
23°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of Snow
  • High: 34 °
  • Low: 21 °
  • Chance of Snow
  • Saturday
  • Snow
  • High: 34 °
  • Low: 14 °
  • Snow
  • Sunday
  • Snow
  • High: 30 °
  • Low: 10 °
  • Snow
  • Monday
  • Fog
  • High: 23 °
  • Low: 7 °
  • Fog
  • Tuesday
  • Chance of Snow
  • High: 32 °
  • Low: 14 °
  • Chance of Snow

Forecast for Sun Valley, Idaho

Updated:

Winter Storm Warning in effect from 11 PM this evening to 5 PM MST Saturday...
  • Friday

    Mostly cloudy with a chance of snow in the afternoon. Fog early. High of 34F. Winds from the SSW at 5 to 10 mph. Chance of snow 70%.

  • Friday Night

    Overcast with snow. Fog overnight. Low of 21F with a windchill as low as 12F. Winds from the SSE at 10 to 15 mph. Chance of snow 100% with accumulations up to 4 in. possible.

  • Saturday

    Overcast with snow. Fog early. High of 34F with a windchill as low as 10F. Breezy. Winds from the West at 15 to 20 mph. Chance of snow 100% with accumulations up to 3 in. possible.

  • Saturday Night

    Mostly cloudy with a chance of snow. Fog overnight. Low of 14F with a windchill as low as 7F. Winds from the West at 5 to 10 mph. Chance of snow 60% with accumulations up to 1 in. possible.

  • Sunday

    Overcast with snow. Fog early. High of 30F with a windchill as low as 3F. Winds from the West at 5 to 10 mph. Chance of snow 60%.

  • Sunday Night

    Mostly cloudy with a chance of snow in the evening, then overcast with a chance of snow. Fog overnight. Low of 10F. Winds from the WSW at 5 to 10 mph. Chance of snow 50% with accumulations up to 1 in. possible.

  • Monday

    Mostly cloudy in the morning, then overcast. Fog early. High of 23F. Winds less than 5 mph.

  • Monday Night

    Overcast in the evening, then mostly cloudy with a chance of snow. Fog overnight. Low of 7F with a windchill as low as -6F. Winds from the SW at 5 to 10 mph. Chance of snow 40% with accumulations up to 2 in. possible.

  • Tuesday

    Overcast with a chance of snow and rain showers in the morning, then partly cloudy with a chance of snow and rain showers. Fog early. High of 32F with a windchill as low as 7F. Winds from the WSW at 5 to 15 mph. Chance of snow 50% with accumulations up to 1 in. possible.

  • Tuesday Night

    Clear with a chance of snow. Fog overnight. Low of 14F. Winds from the WSW at 5 to 10 mph. Chance of snow 40% with accumulations up to 1 in. possible.

  • Wednesday

    Clear with a chance of snow. Fog early. High of 45F. Winds from the SW at 5 to 10 mph. Chance of snow 50%.

  • Wednesday Night

    Clear with a chance of snow. Fog overnight. Low of 3F. Winds from the SW at 5 to 10 mph. Chance of snow 50% with accumulations up to 2 in. possible.

  • Thursday

    Partly cloudy with a chance of snow. Fog early. High of 27F. Winds from the WNW at 5 to 10 mph. Chance of snow 20%.

  • Thursday Night

    Partly cloudy. Fog overnight. Low of -22F. Winds less than 5 mph.

  • Friday

    Mostly cloudy. Fog early. High of 27F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of -4F. 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 -6F. Winds less than 5 mph.

  • Sunday

    Partly cloudy with a chance of snow. Fog early. High of 23F. Winds less than 5 mph. Chance of snow 20% with accumulations up to 1 in. possible.

  • Sunday Night

    Partly cloudy with a chance of snow. Fog overnight. Low of -6F. Winds less than 5 mph. Chance of snow 20% with accumulations up to 1 in. possible.

  • Monday

    Mostly cloudy. Fog early. High of 23F. Winds less than 5 mph.

  • Monday Night

    Clear. Fog overnight. Low of -6F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Winter Storm Warning  Statement as of 4:05 am MST on November 21, 2014


... Winter Storm Warning in effect from 11 PM this evening to 5 PM
MST Saturday...

The National Weather Service in Pocatello has issued a Winter
Storm Warning for heavy snow and blowing snow... which is in
effect from 11 PM this evening to 5 PM MST Saturday. The Winter
Storm Watch is no longer in effect.

* Timing... 11 PM Friday through 5 PM Saturday.

* Main impact... 10 to 14 inches of snow.

* Locations include... Stanley... Banner creek Summit... Ketchum...
   Sun Valley... Galena Summit... Smiley creek Lodge.

* Other impacts... wind gusts of 25 to 40 mph could cause
blowing and drifting snow and reduced visibilities.

Precautionary/preparedness actions...

A Winter Storm Warning means significant amounts of snow are
expected or occurring. Strong winds are also possible. This will
make travel very hazardous or impossible.







Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: RAWS COPPER BASIN ID US, Mackay, ID

Updated: 7:50 AM MST

Temperature: 16 °F Dew Point: 11 °F Humidity: 82% Wind: ENE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 16 °F Graphs

Location: RAWS NORTH FORK ID US, Ketchum, ID

Updated: 7:39 AM MST

Temperature: 23 °F Dew Point: 20 °F Humidity: 88% Wind: WNW at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Sun Valley Resort, Sun Valley, ID

Updated: 9:01 AM MST

Temperature: 22.9 °F Dew Point: 20 °F Humidity: 88% Wind: Calm Pressure: 29.48 in Hourly Precipitation: 0.00 in Windchill: 23 °F Graphs

Location: RAWS OHIO GULCH ID US, Hailey, ID

Updated: 7:44 AM MST

Temperature: 25 °F Dew Point: 20 °F Humidity: 82% Wind: North at 6 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

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

Updated: 7:45 AM MST

Temperature: 23 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 23 °F Graphs

Location: Meadowbrook Road, Hailey, ID

Updated: 8:56 AM MST

Temperature: 26.4 °F Dew Point: 21 °F Humidity: 81% Wind: North at - Pressure: 30.03 in Hourly Precipitation: - Windchill: 26 °F Graphs

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

Updated: 8:00 AM MST

Temperature: 24 °F Dew Point: 18 °F Humidity: 76% Wind: West at 3 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Windchill: 24 °F Graphs

Location: East Fork, Hailey, ID

Updated: 9:01 AM MST

Temperature: 22.5 °F Dew Point: 21 °F Humidity: 93% Wind: Calm Pressure: 24.40 in Hourly Precipitation: 0.00 in Windchill: 22 °F Graphs

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

Updated: 7:45 AM MST

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

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Pocatello Idaho 
329 am MST Friday Nov 21 2014 


Short term...today through Sunday night. There is patchy freezing 
fog this morning across the eastern Magic Valley and Snake River 
Plain. Expect clearing by early to middle morning. Temperatures will 
be slightly warmer today than yesterday ahead of the next Pacific 
storm system. 


Friday night after midnight a moist Pacific storm system starts 
moving into the area. Expect 10 to 14 inches of snow with locally 
higher amounts over the central mountains and eastern Highlands 
along the Wyoming border. These areas have been upgraded to a 
winter weather warning. Also a Winter Weather Advisory has been 
issued for 5 to 10 inches of snow for the Lost River/Pahsimeroi 
Mountains and the southern Highlands above 6000 feet. Expect 
moderate winds Saturday. A Wind Advisory for winds around 30 to 40 
miles per hour will likely be needed for the Snake River Plain...eastern 
Magic Valley and the southern Highlands. Temperatures continue to 
be difficult to pin down which will have an impact on valley snow 
amounts. Currently temperatures start cold enough for valley snow 
early Saturday morning but quickly rise to around 6000 feet just 
as precipitation arrives. As a result...very Little Valley snow 
is expected on Friday night into Saturday at this point. Saturday 
evening snow levels start to drop back to the valley floor. Late 
Sunday a moist trough moves through the area with the potential to 
bring 2 to 4 inches of mountain snow and 1 to 2 inches of valley 
snow. Wyatt 


Long term...Monday through Friday. GFS/European model (ecmwf) remain in good 
agreement early in the medium range. East Idaho under weakening 
influence of deep trough over central states with upper ridge trying 
to build along coast. Moist northwest flow keeps threat of precipitation 
mainly higher elevations Monday through Tuesday night...with focus 
continuing to shift north as ridge amplifies. Model agreement falls 
apart Wednesday and beyond with European model (ecmwf) favoring ridge axis over east 
Idaho by Thursday and GFS continuing to favor continued/strengthened 
influence of northern rockies trough and moist deformation zone over 
the region. Continued earlier forecast trend with probability of precipitation near climatology and 
favoring northern higher elevations. Temperatures favor bias corrected 
blend...which is on the cold side of current guidance. Dmh 


&& 


Aviation...early morning boundary layer moisture contributing to 
pockets of stratus and fog...much of it obscured by middle/high clouds. 
Expect MVFR conditions with isolated IFR/LIFR to continue through 
the morning. Some improvement expected this afternoon/evening. Next 
stronger system arrives tonight and spreads precipitation across the region 
mainly 06z-12z Sat. Return of at least MVFR ceilings most areas 
after 06z. Warming at low levels expected overnight so snow levels 
rise above valley floors and precipitation likely rain at kpih/kbyi early 
Saturday. Dmh 




&& 


Pih watches/warnings/advisories... 
Winter Weather Advisory from 5 am to 11 PM MST Saturday above 
6000 feet for the idz022-032. 


Winter Storm Warning from 5 am to 11 PM MST Saturday 
idz019-023-025. 


Winter Storm Warning from 11 PM this evening to 5 PM MST 
Saturday idz018-031. 


&& 


$$ 



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