Sun Valley, Idaho Weather Conditions

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Current Conditions

  • 72°
  • Thunderstorm
  • Wind: Variable 5 mph
  • Humidity: 40%
  • Visibility: N/A
  • Dew Point: 46°
  • Pressure: 30.05 in. -

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Next 12 Hours

12  pm
3  pm
6  pm
9  pm
12  am
Thunderstorm
T-storms
Thunderstorm
T-storms
Thunderstorm
T-storms
Thunderstorm
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70°
79°
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55°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Thunderstorm
  • High: 79 °
  • Low: 41 °
  • T-Storms
  • Wednesday
  • Chance of a Thunderstorm
  • High: 81 °
  • Low: 39 °
  • Chance of a Thunderstorm
  • Thursday
  • Clear
  • High: 70 °
  • Low: 28 °
  • Clear
  • Friday
  • Clear
  • High: 77 °
  • Low: 30 °
  • Clear
  • Saturday
  • Clear
  • High: 81 °
  • Low: 36 °
  • Clear

Forecast for Sun Valley, Idaho

Updated: 9:00 AM MDT on July 22, 2014

  • Tuesday

    Partly cloudy with thunderstorms, then thunderstorms and rain showers in the afternoon. High of 79F. Winds from the South at 5 to 15 mph. Chance of rain 40%.

  • Tuesday Night

    Partly cloudy with thunderstorms and a chance of rain. Low of 41F. Winds from the SE at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 81F. Winds from the SSE at 5 to 20 mph. Chance of rain 20%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then clear. Low of 39F. Winds from the SW at 5 to 20 mph. Chance of rain 20%.

  • Thursday

    Clear. High of 70F. Winds from the West at 5 to 15 mph.

  • Thursday Night

    Clear. Low of 28F. Winds from the WNW at 5 to 15 mph.

  • Friday

    Clear. High of 77F. Winds from the West at 5 to 10 mph.

  • Friday Night

    Clear. Low of 30F. Winds from the West at 5 to 15 mph.

  • Saturday

    Clear. High of 81F. Winds from the West at 5 to 15 mph.

  • Saturday Night

    Clear. Low of 36F. Winds from the West at 5 to 15 mph shifting to the NE after midnight.

  • Sunday

    Partly cloudy. High of 90F. Winds less than 5 mph.

  • Sunday Night

    Overcast. Low of 41F. Winds less than 5 mph.

  • Monday

    Mostly cloudy. High of 82F. Winds less than 5 mph.

  • Monday Night

    Partly cloudy. Low of 45F. Winds from the WSW at 5 to 10 mph shifting to the South after midnight.

  • Tuesday

    Partly cloudy. High of 81F. Winds from the NNW at 5 to 10 mph shifting to the West in the afternoon.

  • Tuesday Night

    Partly cloudy. Low of 46F. Winds from the WNW at 5 to 15 mph shifting to the NE after midnight.

  • Wednesday

    Partly cloudy. High of 82F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 45F. Winds from the NW at 5 to 10 mph shifting to the NNE after midnight.

  • Thursday

    Partly cloudy. High of 84F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm. Low of 43F. Winds less than 5 mph. Chance of rain 20%.

  • Friday

    Mostly cloudy with a chance of a thunderstorm. High of 84F. Winds less than 5 mph. Chance of rain 20%.

  • Friday Night

    Clear. Fog overnight. Low of 43F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Fire Weather Watch  Statement as of 2:55 am MDT on July 22, 2014


... Fire Weather Watch in effect from Thursday afternoon through
Thursday evening for gusty winds and low humidity for fire zones
422 and 427...

The National Weather Service in Pocatello has issued a Fire
Weather Watch... which is in effect from Thursday afternoon
through Thursday evening.

* Affected area: in Idaho... fire zone 422 Sawtooth
Range/northern sawtooth nf... fire zone 427 Goose Creek and Raft
River Valley/southern sawtooth nf.

* Timing: Thursday afternoon through Thursday evening.

* Wind: increasing through the morning with gusts in excess of 25
to 30 mph after 1200 MDT.

* Humidity: 7 to 14 percent.

* Impacts: the combination of gusty winds and low humidity may
create critical fire weather conditions.

Precautionary/preparedness actions...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Please advise the appropriate officials or
fire crews in the field of the Fire Weather Watch for portions of
southeast Idaho.






Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: RAWS SAWTOOTH PORTABLE #2 ID US, Sun Valley, ID

Updated: 10:04 AM MDT

Temperature: 69 °F Dew Point: 42 °F Humidity: 37% Wind: NE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: RAWS COPPER BASIN ID US, Mackay, ID

Updated: 9:50 AM MDT

Temperature: 68 °F Dew Point: 38 °F Humidity: 33% Wind: West at 4 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Sun Valley Resort, Sun Valley, ID

Updated: 11:25 AM MDT

Temperature: 76.3 °F Dew Point: 45 °F Humidity: 33% Wind: ESE at 6.0 mph Pressure: 29.37 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: RAWS OHIO GULCH ID US, Hailey, ID

Updated: 10:44 AM MDT

Temperature: 74 °F Dew Point: 43 °F Humidity: 33% Wind: South at 7 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 9:45 AM MDT

Temperature: 69 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest SUN VALLEY-BALD MTN ID US SNOWNET, Ketchum, ID

Updated: 10:30 AM MDT

Temperature: 59 °F Dew Point: 44 °F Humidity: 58% Wind: SSE at 5 mph Pressure: 30.27 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 10:00 AM MDT

Temperature: 58 °F Dew Point: 43 °F Humidity: 56% Wind: SE at 5 mph Pressure: 30.27 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: East Fork, Hailey, ID

Updated: 11:25 AM MDT

Temperature: 74.8 °F Dew Point: 47 °F Humidity: 37% Wind: NNW at 2.0 mph Pressure: 30.31 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: ITD Wood River ID US, Hailey, ID

Updated: 10:15 AM MDT

Temperature: 76 °F Dew Point: 43 °F Humidity: 31% Wind: ESE at 2 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 9:45 AM MDT

Temperature: 71 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Pocatello Idaho 
251 am MDT Tuesday Jul 22 2014 


Short term...today through Wednesday. Monsoon moisture plume is 
shifting to the north today...which will result in the showers and 
thunderstorms staying over the central mountains for the most part. Isolated thunderstorms 
are still possible across the northern parts of the Snake River 
Plain this afternoon. The rest of the forecast area is expected to remain 
dry. Lingering moisture. The upper ridge over the central US will 
amplify on Wednesday ad an upper closed low moves into the Pacific northwest. Isolated 
thunderstorms will again be possible over the central mountains Wednesday afternoon and 
evening due to Pacific moisture brought in by the upper low. Temperatures climb 
back up on Wednesday due to the amplifying ridge. 


Long term...Thursday through Tuesday. The upper low quickly 
moves northeast into Alberta on Thursday...taking any threat of 
precipitation along with. A dry cold front passes through Thursday 
morning...creating windy conditions. This will also result in 
cooler temperatures Thursday and Friday as the upper ridge is pushed completely 
out of the area. Temperatures in the Central Mountain basins are expected to 
fall to the lower 30s Friday morning...and into the 40s in much of the 
rest of the forecast area. The upper ridge builds back up over the 
weekend...which will push temperatures back up as well. The GFS is 
hinting at monsoon moisture beginning to flow back into Idaho on Monday 
and Tuesday...but for now will leave the forecast dry. Hedges 


&& 


Aviation...a drier SW flow will spread into the southeast half of the 
forecast area today with VFR scattered middle-level clouds anticipated at the 
kbyi kpih and kida terminals. A sub-tropical moisture plume 
extending from a shallow low off the Southern California coast will lift 
NE through the central mountains today helping to support scattered 
showers and isolated thunderstorms in that region potentially 
impacting the ksun terminal. The remains of the low off the 
California coast lift through eastern Oregon overnight supporting 
ongoing nocturnal shower and thunderstorm activity across the central 
mountains. At this time...the bulk of this activity looks to be 
north of ksun with little if any impact anticipated on the terminal. 
Huston 


&& 


Fire weather...early morning satellite imagery was showing a deep 
low pressure system shifting south along the British Columbia coast 
with a shallow sub-tropical low positioned off Southern California and an 
associated moisture plume lifting NE across California and western 
Nevada. Numerical models show this plume of moisture lifting NE 
through central Idaho today supporting scattered showers and isolated 
to widely scattered thunderstorms. Meanwhile...across the southeast 
districts...a dry and stable airmass is expected to gradually work 
into the area this afternoon/evening effectively suppressing any 
convective potential in that region. Ongoing shower activity is 
expected to continue across the central mountains overnight as the 
remains of the shallow low off the California coast lift NE through 
the region. Once this system clears the area Wednesday morning...a 
drier SW flow will advance across the area ahead of the deep low now 
positioned near Portland. This low ejects NE through Washington 
Wednesday night and into Canada Thursday while an associated dry 
surface cold front sweeps into/through southeast Idaho. Wind speeds will 
begin to ramp up Wednesday afternoon across the central mountains 
ahead of the developing front with near red flag conditions 
expected. A solid red flag wind/low humidity event is expected 
across the area Thursday as the front advances through the 
region...thus a Fire Weather Watch will be posted with the morning 
forecast package. Starting Friday and continuing into the 
weekend...the 4-corners high expands northward across southern Idaho with 
hotter temperatures returning to the area by Sunday. By 
Monday...sub-tropical moisture is evident lifting north around the 
western periphery of the high...opening the door to increased 
thunderstorm activity through the first half of next week. Huston 


&& 


Pih watches/warnings/advisories... 
Fire Weather Watch from Thursday afternoon through Thursday 
evening idz410-425. 


Fire Weather Watch from Thursday afternoon through Thursday 
evening idz422-427. 


&& 


$$ 



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