Sun Valley, Idaho Weather Conditions

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Current Conditions

  • 29°
  • Snow
  • Wind: NNW 4 mph
  • Humidity: 78%
  • Visibility: N/A
  • Dew Point: 23°
  • Pressure: 29.74 in. +
  • Heat Index: 25

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Next 12 Hours

12  am
3  am
6  am
9  am
12  pm
Snow Showers
Snow Showers
Snow Showers
Snow Showers
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
27°
21°
14°
21°
30°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of Snow
  • High: 37 °
  • Low: 21 °
  • Chance of Snow
  • Thursday
  • Snow Showers
  • High: 43 °
  • Low: 27 °
  • Snow Showers
  • Friday
  • Snow Showers
  • High: 41 °
  • Low: 25 °
  • Snow Showers
  • Saturday
  • Chance of Snow
  • High: 43 °
  • Low: 19 °
  • Chance of Snow
  • Sunday
  • Chance of Snow
  • High: 39 °
  • Low: 19 °
  • Chance of Snow

Forecast for Sun Valley, Idaho

Updated: 9:00 PM MDT on April 22, 2014

  • Wednesday

    Mostly cloudy with a chance of snow. High of 37F with a windchill as low as 1F. Winds from the West at 10 to 15 mph. Chance of snow 40%.

  • Wednesday Night

    Mostly cloudy with a chance of snow. Low of 21F with a windchill as low as 12F. Winds from the WNW at 5 to 15 mph shifting to the SSW after midnight. Chance of snow 40% with accumulations up to 1 in. possible.

  • Thursday

    Overcast with snow showers, then snow showers and rain showers in the afternoon. High of 43F. Winds from the SSW at 5 to 15 mph. Chance of snow 80% with accumulations up to 1 in. possible.

  • Thursday Night

    Mostly cloudy with snow showers in the evening, then overcast with snow showers. Low of 27F. Winds from the SSW at 5 to 15 mph. Chance of snow 60% with accumulations up to 1 in. possible.

  • Friday

    Mostly cloudy with snow showers and rain showers. Fog early. High of 41F. Winds from the SSE at 5 to 10 mph. Chance of snow 60% with accumulations up to 1 in. possible.

  • Friday Night

    Overcast with a chance of snow. Fog overnight. Low of 25F. Winds less than 5 mph. Chance of snow 50% with accumulations up to 2 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. Fog early. High of 43F. Winds from the WNW at 5 to 10 mph. Chance of snow 70% with accumulations up to 2 in. possible.

  • Saturday Night

    Overcast with a chance of snow in the evening, then mostly cloudy with a chance of snow. Fog overnight. Low of 19F. Winds from the West at 5 to 10 mph. Chance of snow 40% with accumulations up to 1 in. possible.

  • Sunday

    Mostly cloudy with a chance of snow and a chance of rain in the afternoon. Fog early. High of 39F. Winds from the West at 5 to 10 mph. Chance of snow 40%.

  • Sunday Night

    Clear. Low of 19F. Winds from the SW at 5 to 10 mph.

  • Monday

    Partly cloudy with a chance of snow. Fog early. High of 45F. Winds from the SW at 5 to 10 mph. Chance of snow 60% with accumulations up to 1 in. possible.

  • Monday Night

    Clear with a chance of rain. Fog overnight. Low of 10F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Clear. Fog early. High of 54F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 28F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 57F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Fog overnight. Low of 30F. Winds less than 5 mph.

  • Thursday

    Clear. High of 55F. Winds less than 5 mph.

  • Thursday Night

    Clear. Fog overnight. Low of 25F. Winds less than 5 mph.

  • Friday

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

  • Friday Night

    Partly cloudy. Fog overnight. Low of 25F. Winds less than 5 mph.

  • Saturday

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

  • Saturday Night

    Clear. Fog overnight. Low of 25F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Record Report  Statement as of 5:42 PM MST on April 22, 2014


... Record precipitation set at Stanley today...

Stanley set a new precipitation record today by recording 0.31
inches. This breaks the previous record of 0.26 inches set in 1923.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 11:00 PM MDT

Temperature: 31 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

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

Updated: 11:00 PM MDT

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

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

Updated: 11:00 PM MDT

Temperature: 36 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

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

Updated: 11:00 PM MDT

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

Location: MesoWest SWEDE PEAK ID US SNOTEL, Sun Valley, ID

Updated: 11:00 PM MDT

Temperature: 31 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

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

Updated: 11:00 PM MDT

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

Location: MesoWest GARFIELD R.S. ID US SNOTEL, Sun Valley, ID

Updated: 11:00 PM MDT

Temperature: 34 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: RAWS COPPER BASIN ID US, Mackay, ID

Updated: 11:50 PM MDT

Temperature: 27 °F Dew Point: 25 °F Humidity: 93% Wind: NNW at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: Sun Valley Resort, Sun Valley, ID

Updated: 12:37 AM MDT

Temperature: 33.3 °F Dew Point: 22 °F Humidity: 64% Wind: SSE at 3.0 mph Pressure: 29.03 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

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

Updated: 11:45 PM MDT

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

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

Updated: 12:00 AM MDT

Temperature: 21 °F Dew Point: 18 °F Humidity: 88% Wind: NW at 19 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Windchill: 6 °F Graphs

Location: East Fork, Hailey, ID

Updated: 12:38 AM MDT

Temperature: 28.0 °F Dew Point: 26 °F Humidity: 92% Wind: Calm Pressure: 29.75 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

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

Updated: 11:00 PM MDT

Temperature: 25 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 25 °F Graphs

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

Updated: 11:45 PM MDT

Temperature: 35 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

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

Updated: 11:00 PM MDT

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

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

Updated: 11:00 PM MDT

Temperature: 20 °F Dew Point: - Humidity: - Wind: NNE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 13 °F Graphs

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

Updated: 11:00 PM MDT

Temperature: 26 °F Dew Point: - Humidity: - Wind: NW at 1 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

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

Updated: 11:00 PM MDT

Temperature: 18 °F Dew Point: 17 °F Humidity: 96% Wind: NW at 10 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 6 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Pocatello Idaho 
847 PM MDT Tuesday Apr 22 2014 


Short term...second update this evening to expire/cancel the Wind 
Advisory across the southeast Highlands as observations show wind speeds 
well below advisory levels. Elsewhere...a marginal Wind Advisory 
event continues across inl with lighter winds throughout the 
remainder of the Snake River Plain/eastern Magic Valley. The latest NAM 
numerical guidance still suggests winds diminishing across the snake 
plain through midnight while increasing across the eastern Magic Valley 
as the surface pressure gradient strengthens in that region. No new 
statistical guidance as of yet. NAM numerical guidance also supports 
sub-advisory conditions throughout the snake plain during day 
Wednesday. Want to see GFS and statistical guidance before dropping 
highlight...so will leave it out for now and allow middle-shift to 
reevaluate the headline. See previous discussions below. Huston 


Update this evening to clear Severe Thunderstorm Watch from southeast Idaho 
counties for the remainder of the evening. Wind Advisory still 
verifying across inl and select locations across the southeast Idaho 
mountains. Some differences noted between the numerical and 
statistical guidance from earlier today as statistical guidance 
suggests that winds will remain elevated overnight and increase 
again Wednesday afternoon while the numerical guidance has it 
dropping off across the Upper Valley and southeast Highlands with a 
resurgence across the Magic Valley late this evening/tonight. Will 
hold off on any modifications with the advisory until I can get a 
look at the newer 00z data. See previous discussion below. Huston 


Tonight through Wednesday night...approaching trough advancing 
across the northern rockies and Great Basin this afternoon. Cold 
front sweeping through Idaho with unstable air in place across our 
eastern zones. Models and satellite show area of lift and potential 
for rapid convective development in the next few hours over the 
eastern part of our area. This in line with Storm Prediction Center slight risk. As 
front sweeps through this evening...severe threat diminishes leaving 
County Warning Area with strong winds and cold advection. Much cooler and windy 
Wednesday with lingering mountain precipitation to fall as snow 
albeit light amounts due to rapid loss of available moisture. 
Dittmann 


Thursday morning through Friday afternoon. Weak high pressure 
builds across the area in between storm systems. We won't totally 
dry out except across southern areas Thursday morning. Snow levels 
should remain above 5500ft in the morning...rising to 6500-7000ft by 
afternoon. By then...we will return to southwest flow ahead of the 
next system moving toward the coast. Showers will slowly spread 
southeast...but the highest chances will still remain over the 
central mountains and upper snake Highlands. This storm continues to 
show signs of splitting but it appears we are looking at a decent 
shot of moisture heading into Thursday night and Friday. Snow levels 
will range from 6500ft in the west to around 8000ft around Bear 
Lake. This means...that we may be looking at rain on top of snow in 
conjunction with some melting for middle slopes. 


Long term...Friday night through Tuesday night. A good chance of 
showers remains over all of eastern Idaho heading into 
Saturday...with a dwindling chance on Sunday and Monday. Beyond 
that...a strong ridge of high pressure builds the state...drying US 
out and allowing for warmer weather to persist. The models are 
showing some reasonable agreement and the forecast looks pretty 
good...so we are pretty much leaving it alone for today. Even though 
we should see a bit of a cool down for Sunday and Monday...the 
threat of snow melt and water rises will continue. Keyes 
&& 


Aviation...showers and a few storms will affect all taf sites 
through early evening. We may see MVFR conditions during heavier 
showers and storms...along with a threat of hail and wind gusts 
approaching 50kts. Outside of thunderstorms...gusty surface winds 
have developed and will keep going through tomorrow afternoon. This 
will be an issue for kbyi...kpih and kida. We are also keeping vcsh 
in for kida and kpih through tomorrow morning at least as moisture 
will remain in place across eastern locations. We may need to add 
this for ksun for later taf issuance...but appears kbyi should be 
dry after this evening. Keyes 
&& 


Hydrology...expect to see in-bank rises in rivers and streams over 
the next few days due to runoff from precipitation and snow melt. Current 
hydrograph projections are not indicating flooding at this time. 
Hinsberger 
&& 


Pih watches/warnings/advisories... 
Wind Advisory until 9 PM MDT Wednesday idz017-020-021. 
&& 


$$ 



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