Sun Valley, Idaho Weather Conditions

Your Weather

To update your location please enter your ZIP code, city, state, airport code or country in the field below. Weather by E-mail: Forecast storm alerts. Weather E-Mail Alert Sign Up »

Current Conditions

  • 73°
  • Clear
  • Wind: SW 13 mph
  • Humidity: 17%
  • Visibility: N/A
  • Dew Point: 26°
  • Pressure: 29.72 in. -

Select a Section

Click a section below for more information.

Next 12 Hours

1  pm
4  pm
7  pm
10  pm
1  am
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
71°
72°
70°
59°
54°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Clear
  • High: 73 °
  • Low: 47 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 67 °
  • Low: 43 °
  • Partly Cloudy
  • Friday
  • Overcast
  • High: 65 °
  • Low: 41 °
  • Overcast
  • Saturday
  • Partly Cloudy
  • High: 57 °
  • Low: 34 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 59 °
  • Low: 33 °
  • Partly Cloudy

Forecast for Sun Valley, Idaho

Updated: 3:18 am MDT on September 2, 2015

  • Today

    Sunny. Highs 72 to 82.

  • Tonight

    Partly cloudy. Colder. Lows 42 to 49.

  • Thursday

    Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs 63 to 72.

  • Thursday Night

    Mostly cloudy with a slight chance of showers and thunderstorms. Lows 40 to 47.

  • Friday

    Partly sunny with a slight chance of showers and thunderstorms. Highs 57 to 67.

  • Friday Night

    Mostly cloudy with a slight chance of showers and thunderstorms. Lows 35 to 44.

  • Saturday and Saturday Night

    Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms. Highs 56 to 66. Lows 33 to 43.

  • Sunday

    Partly sunny with a slight chance of rain showers. Highs 57 to 67.

  • Sunday Night

    Partly cloudy with a slight chance of rain showers. Lows 33 to 41.

  • Labor Day through Tuesday

    Mostly clear. Highs 67 to 77. Lows 36 to 46.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: MesoWest, Sun Valley, ID

Updated: 9:00 AM MDT

Temperature: 56 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest, Sun Valley, ID

Updated: 9:00 AM MDT

Temperature: 60 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Sun Valley Resort, Sun Valley, ID

Updated: 12:53 PM MDT

Temperature: 76.2 °F Dew Point: 37 °F Humidity: 24% Wind: Calm Pressure: 29.06 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Sun Valley, Sun Valley, ID

Updated: 12:38 PM MDT

Temperature: 76.8 °F Dew Point: 20 °F Humidity: 12% Wind: SSW at 8.1 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Meadowbrook Road, Hailey, ID

Updated: 12:50 PM MDT

Temperature: 70.3 °F Dew Point: 37 °F Humidity: 29% Wind: North at - Pressure: 30.01 in Hourly Precipitation: - Heat Index: 76 °F Graphs

Location: MesoWest, Ketchum, ID

Updated: 12:15 PM MDT

Temperature: 62 °F Dew Point: 26 °F Humidity: 26% Wind: South at 18 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest, Ketchum, ID

Updated: 12:00 PM MDT

Temperature: 61 °F Dew Point: 25 °F Humidity: 26% Wind: South at 18 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Timber Lane, Hailey, ID

Updated: 12:50 PM MDT

Temperature: 51.8 °F Dew Point: 40 °F Humidity: 63% Wind: North at - Pressure: 30.08 in Hourly Precipitation: - Heat Index: - Graphs

Location: Audubon Place, Hailey, ID

Updated: 12:50 PM MDT

Temperature: 69.3 °F Dew Point: 44 °F Humidity: 39% Wind: North at - Pressure: 30.10 in Hourly Precipitation: - Heat Index: - Graphs

Location: Indian Creek, Hailey, ID

Updated: 12:40 PM MDT

Temperature: 75.9 °F Dew Point: 36 °F Humidity: 23% Wind: SSE at 4.2 mph Pressure: 25.67 in Hourly Precipitation: 0.00 in Heat Index: 77 °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 Wednesday Sep 2 2015 


Discussion...a deep upper low over the central British Columbia coast this morning 
is expected to drop south to the Washington/or coast by Friday morning. Upper 
level flow will become more southwesterly and increase today 
resulting in windy conditions this afternoon...especially at the higher 
elevations in the central mountains the SW flow may drag some 
subtropical moisture out of the Great Basin into southeast Idaho this evening... 
setting off isolated thunderstorms in the eastern Highlands. The rest of the 
forecast area will remain dry through tonight. As the upper low moves 
south...showers/tstms will creep into the central mountains on Thursday... 
spreading to the upper snake Highlands by Friday. Still may see isolated 
activity in the southeast corner as subtrop moisture continues to get 
pulled in by the SW flow. 


The picture changes by Saturday...as the upper low moves into the 
Great Basin. Showers/isolated thunderstorms will become more widespread...and 
temperatures much cooler. The upper low moves into Idaho Sat night. Models 
showing a dry slot moving into southern Idaho...pushing most of the 
precipitation into the northern parts of the forecast area. The upper low 
fills and mover NE out of the area late Sunday...with all areas 
drying out Sun night. 


Both GFS and European model (ecmwf) bring an upper trough through Idaho on Monday...but with 
differing configurations. Both models agree that this system will 
be dry. Temperatures climb back to more seasonal readings Tuesday and Wednesday. 
Hedges 


&& 


Aviation...expect winds to increase this afternoon at Ida and pih 
to sustained 15 to 25 knots and gusts 25 to 35 knots after 18 to 
20z. Expect lighter winds at byi in the 10 to 15 knot range 
sustained wtih 10 to 15 also at sun with gusts around 20 knots. 
Will be VFR across the board with some moisture pushing into 
southeast corner tonight with some vcsh at pih and Ida. 
Gk 


&& 


Fire weather...very dry and mild conditions continue over eastern 
Idaho today. Strong winds aloft will mix down mainly in the 
northern and eastern parts of the district and a red flag warning 
remains in effect for zones 475...476 and 410 beginning at noon and 
continuing through 9 PM. Gusts of 25 to 35 miles per hour are possible this 
afternoon. Humidity will bottom out in the 15 percent range across 
those zones as well. Winds not expected to be quite as strong 
further south and west so the warning limited to those three zones. 
Upper level system continues to push east Thursday with isolated 
thunderstorms possible. Showers and much colder temperatures are 
likely Friday through Sunday with wetting rains likely in zones 475 
and 476. 
Gk 


&& 


Pih watches/warnings/advisories... 
red flag warning from noon today to 9 PM MDT this evening for 
idz410-475-476. 


&& 


$$ 






National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.